{"title":"Solar Astronomy","description":"\u003cdiv\u003e\n  \u003cp\u003e\n    The Sun is the only object in astronomy that changes visibly within an hour, and the only one that can permanently damage your eyes in a fraction of a second. Done with proper equipment, solar observing is the most accessible branch of the hobby, no dark sky, no late night, no travel. David Astro carries solar astronomy products in Canada: hydrogen-alpha telescopes, white-light filters, Calcium-K modules, wedges and dedicated solar accessories, in Canadian inventory and shipped domestically.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Safety here is absolute, and we will not sell an unsafe combination. If you are unsure whether a filter or setup is appropriate, ask us before you point anything at the Sun.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- more --\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eWays to Observe the Sun Safely\u003c\/h2\u003e\n  \u003cp\u003e\n    Different wavelengths reveal completely different Suns. White light shows the photosphere and sunspots; hydrogen-alpha shows the chromosphere with prominences and filaments; Calcium-K shows the plage network above it.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003eWhite-light filters:\u003c\/a\u003e\u003c\/strong\u003e Full-aperture film or glass filters fitted in front of the objective, showing sunspots, granulation and faculae. They must always be at the front, never at the eyepiece.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003eHydrogen-alpha telescopes:\u003c\/a\u003e\u003c\/strong\u003e Dedicated instruments with sub-angstrom etalons that isolate the 656.28 nm line, revealing prominences at the limb and filaments and flares on the disc.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-int\/collections\/h-alpha-and-calcium-filters\"\u003eSolar filter modules:\u003c\/a\u003e\u003c\/strong\u003e Etalon and blocking filter assemblies that convert a suitable refractor into a hydrogen-alpha instrument.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCalcium-K filters:\u003c\/strong\u003e Narrow filters at 393 nm showing the chromospheric network, best captured with a camera since the wavelength is at the edge of human sensitivity.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHerschel wedges:\u003c\/strong\u003e High-contrast white-light observing for refractors, diverting most solar energy out of the optical path rather than reflecting it back.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-int\/collections\/solar-accessories\"\u003eSolar accessories:\u003c\/a\u003e\u003c\/strong\u003e Finders, blocking filters, tuning aids and mounting hardware designed for daytime work.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eWhy Choose David Astro for Solar Astronomy\u003c\/h2\u003e\n  \u003cp\u003e\n    This is the one category where getting the recommendation wrong has consequences beyond a disappointing view.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSafety verified, not assumed:\u003c\/strong\u003e We confirm that any filter is full-aperture and front-mounted, and we will not supply eyepiece-end solar filters, which can fail catastrophically under concentrated heat.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAperture limits for etalon modules:\u003c\/strong\u003e Front-mounted etalons have maximum aperture and focal ratio limits, and exceeding them risks both poor performance and thermal damage. We check your telescope against them.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAuthorized dealer:\u003c\/strong\u003e Genuine solar equipment with full manufacturer warranty, critically important in a category where counterfeit filters exist.\u003c\/li\u003e\n    \n    \u003cli\u003e\n\u003cstrong\u003eInspection and service:\u003c\/strong\u003e We can inspect solar filters for pinholes and coating damage, which should be done before every season.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eSolar Astronomy in Canada: Frequently Asked Questions\u003c\/h2\u003e\n  \u003ch3\u003eCan I use an eyepiece-mounted solar filter?\u003c\/h3\u003e\n  \u003cp\u003eNo. Filters that screw into an eyepiece sit where the telescope has concentrated the Sun's full energy, and they can crack without warning. Only full-aperture filters mounted at the front of the telescope are safe.\u003c\/p\u003e\n  \u003ch3\u003eWhite light or hydrogen-alpha first?\u003c\/h3\u003e\n  \u003cp\u003eWhite light is far less expensive and shows sunspots and granulation well. Hydrogen-alpha shows prominences and surface activity that white light cannot, and is the more dramatic view, at several times the cost.\u003c\/p\u003e\n  \u003ch3\u003eHow do I know my filter is still safe?\u003c\/h3\u003e\n  \u003cp\u003eHold it up to a bright indoor light and look for pinholes, scratches or delamination in the coating. Any visible defect means it should be replaced, not repaired or taped.\u003c\/p\u003e\n  \u003ch3\u003eCan I observe the Sun in winter?\u003c\/h3\u003e\n  \u003cp\u003eYes, and low winter sun means long atmospheric path and often poor seeing, but activity is visible year round. Cold also keeps etalon tuning more stable than a hot summer afternoon does.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eStarting with solar observing?\u003c\/h2\u003e\n  \u003cp\u003eTell us your telescope and we will confirm a safe, effective setup. Genuine filters, Canadian stock, expert guidance.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"celestron-eclipsmart-solar-filter-6-sct","title":"Celestron EclipSmart Solar Filter - 6” SCT","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for Celestron 6\" Schmidt-Cassegrain Telescopes\u003c\/li\u003e\n\u003cli\u003eProvides a 128.5mm (5.06\") clear aperture for safe solar viewing\u003c\/li\u003e\n\u003cli\u003eISO 12312-2:2015(E) compliant Solar Safe filter technology\u003c\/li\u003e\n\u003cli\u003eBlocks 99.999% of visible light plus harmful IR and UV radiation\u003c\/li\u003e\n\u003cli\u003eRenders the Sun in a natural, high-contrast orange color\u003c\/li\u003e\n\u003cli\u003eSecures with two 1\" x 4\" hook and loop safety straps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCelestron EclipSmart Solar Filter for 6” Schmidt-Cassegrain Telescopes\u003c\/h2\u003e\n\u003cp\u003eThe Celestron EclipSmart Solar Filter transforms your 6\" \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrain\u003c\/a\u003e into a dedicated solar observatory, featuring a 128.5mm clear aperture for detailed views of sunspots and eclipses. This filter conforms to the ISO 12312-2:2015(E) international safety standard, blocking 99.999% of visible light and all harmful UV and IR radiation. Weighing just 2.6 oz (74 g), it attaches securely without compromising your telescope's balance, providing a safe, high-contrast view of the Sun in a natural orange hue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eISO 12312-2 Certified Solar Safe Technology\u003c\/h3\u003e\n\u003cp\u003eThe core of the EclipSmart filter is its Solar Safe technology, which meets the stringent transmission requirements of ISO 12312-2:2015(E). The scratch-resistant polymer, produced by American Paper Optics, has been independently tested to guarantee protection from harmful solar radiation. This allows you to directly and safely observe sunspots, planetary transits, and all phases of a solar eclipse.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Radiation Blocking:\u003c\/strong\u003e The filter material eliminates dangerous infrared (IR) and ultraviolet (UV) light while reducing visible light to a safe, neutral-density level.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural Orange View:\u003c\/strong\u003e The filter is engineered to produce a solar image with a pleasing and natural-looking orange color, which enhances contrast on solar granulation and sunspot details.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First:\u003c\/strong\u003e Before every use, you should inspect the filter surface for any damage, punctures, or separation from the frame to ensure your observing session is completely safe.\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 128.5mm Custom Fit for 6\" Celestron SCTs\u003c\/h3\u003e\n\u003cp\u003eThis EclipSmart filter is engineered with an internal diameter of 174mm for a precise, snug fit on Celestron 6\" Schmidt-Cassegrain optical tubes. The design prevents accidental slippage and ensures no unfiltered sunlight can enter the telescope. Two 1\" x 4\" hook and loop straps, combined with four adhesive tabs, provide a redundant safety system that holds the filter securely in place, even if the telescope is bumped or subjected to a light breeze.\u003c\/p\u003e\n\u003cp\u003eThe 128.5mm clear aperture uses most of your 6\" telescope's aperture, delivering bright and detailed views. This filter is confirmed to be compatible with a wide range of models, including the \u003ca href=\"\/en-int\/products\/celestron-nexstar-6se-computerized-telescope\"\u003eNexStar 6SE\u003c\/a\u003e, \u003ca href=\"\/en-int\/products\/celestron-nexstar-evolution-6-telescope\"\u003eNexStar Evolution 6\u003c\/a\u003e, and Advanced VX 6\" SCTs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I correctly install the EclipSmart filter on my NexStar 6SE?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo install the EclipSmart filter, first place the four 1\" x 1\" hook and loop tabs evenly around the outer edge of your telescope tube's front cell. Slide the filter over the front of the telescope until it fits snugly. Finally, attach the two 1\" x 4\" safety straps by wrapping them around the telescope tube and securing them tightly to the filter. Always check that the filter is secure and cannot be accidentally dislodged before pointing the telescope at the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the EclipSmart filter safe for viewing all phases of a solar eclipse?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The EclipSmart filter is ISO 12312-2:2015(E) compliant and designed for safe viewing of all partial phases of a solar eclipse. You must use the filter whenever any part of the Sun's bright photosphere is visible. It is only safe to remove the filter during the brief period of totality, if you are in the correct location, and you must replace it immediately as soon as the Sun begins to reappear.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the orange solar image color provided by the EclipSmart filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe orange tint is often preferred by solar observers because it provides a more natural and aesthetically pleasing view of the Sun compared to stark white-light filters. This color can also help improve visual contrast on subtle surface features like sunspots and faculae, making them easier to discern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this EclipSmart filter fit any 6\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is specifically designed for Celestron 6\" Schmidt-Cassegrain telescopes, with an internal diameter of 174mm (6.85\"). It will not fit other 6\" telescopes like \u003ca href=\"\/en-int\/collections\/newtonian-telescopes\"\u003eNewtonian reflectors\u003c\/a\u003e or \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e, which have different outer tube diameters. Always measure the external diameter of your telescope's front cell before purchasing a solar filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the EclipSmart filter for solar imaging with my 6\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The EclipSmart filter is an excellent and affordable option for starting in solar astrophotography. It reduces the Sun's brightness to a safe level for your camera sensor, allowing you to capture detailed images of sunspots and solar eclipses through your Celestron 6\" SCT.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat should I do if I find a scratch or pinhole on my EclipSmart filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf your filter is damaged, torn, punctured, or separated from its frame in any way, you must discard it immediately. Never use a compromised solar filter, as it can lead to permanent and irreversible eye damage. Always inspect your filter carefully before each and every observing session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eCelestron 6\" Schmidt-Cassegrain Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Clear Aperture\u003c\/td\u003e\n\u003ctd\u003e128.5mm (5.06\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eScratch resistant polymer (American Paper Optics)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eISO 12312-2:2015(E)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Image Color\u003c\/td\u003e\n\u003ctd\u003eOrange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Diameter\u003c\/td\u003e\n\u003ctd\u003e184mm (7.24\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Diameter\u003c\/td\u003e\n\u003ctd\u003e174mm (6.85\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd\u003e24mm (0.94\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.6 oz (74 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Straps\u003c\/td\u003e\n\u003ctd\u003eTwo 1\" x 4\" hook and loop straps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Tabs\u003c\/td\u003e\n\u003ctd\u003eFour 1\" x 1\" hook and loop Tabs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"text-align:center; font-weight:bold; padding-top:20px;\"\u003eSolar Warning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003eOnly observe the Sun with ISO-compliant eye protection, such as the filter found in this EclipSmart product. Never look directly at the Sun with the naked eye or a non-filtered optic. Permanent and irreversible eye damage may result. Never tamper with or remove the permanently placed glass filters in this optic. Doing so is dangerous and will void your warranty. Never leave your optic unsupervised. Make sure an adult who is familiar with its correct operating procedures is with your optic at all times, especially when children are present. Never remove your eye protection when looking directly at the Sun during partial phases of a solar eclipse.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e128.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eEclipSmart Solar Filter for 6” SCT\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1\" x 4\" Hook and Loop Straps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1\" x 1\" Hook and Loop Tabs\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 4\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967149666589,"sku":"CEL-94243","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-EclipSmart-Solar-Filter-6-inch-SCT-94243-1__50619.1594229205.1280.1280.jpg?v=1684337265"},{"product_id":"celestron-eclipsmart-solar-filter-8-sct-and-edgehd","title":"Celestron EclipSmart Solar Filter - 8” SCT and EdgeHD","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eInstantly adapts your Celestron 8” Schmidt-Cassegrain or EdgeHD telescope for solar viewing\u003c\/li\u003e\n\u003cli\u003eConforms to the ISO 12312-2:2015(E) international safety standard for direct solar observation\u003c\/li\u003e\n\u003cli\u003eFeatures a 176mm clear aperture for unobstructed views\u003c\/li\u003e\n\u003cli\u003eProduces a natural, glare-free orange-tinted image of the Sun\u003c\/li\u003e\n\u003cli\u003eSecures to your telescope with two 1\" x 4\" hook and loop straps for a safe fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCelestron EclipSmart Solar Filter for 8” Schmidt-Cassegrain and EdgeHD Telescopes\u003c\/h2\u003e\n\u003cp\u003eThe Celestron EclipSmart Solar Filter transforms your 8-inch SCT or EdgeHD telescope into a dedicated solar observatory, featuring a 176mm clear aperture and ISO 12312-2:2015(E) compliant filter material. This lightweight, 4.2 oz filter is custom-designed with a 225mm internal diameter for a secure fit, attaching with two 1\" x 4\" hook and loop straps to ensure safe, direct observation of sunspots, transits, and solar eclipses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eISO 12312-2:2015 Certified: Safe Solar Views for Your 8\" Telescope\u003c\/h3\u003e\n\u003cp\u003eThe core of the EclipSmart filter is its Solar Safe technology, which has been independently tested to meet the rigorous transmission requirements of the ISO 12312-2:2015(E) international safety standard. The scratch-resistant polymer, produced by American Paper Optics, blocks 99.999% of visible light and all harmful IR and UV radiation. This allows you to safely observe the Sun's photosphere in detail, revealing sunspots and granulation in a natural, pleasing orange hue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCustom 225mm Fit for Celestron SCT \u0026amp; EdgeHD: Secure Mounting and Full Aperture\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for Celestron's 8\" optical tubes, this filter has an internal diameter of 225mm and an external diameter of 235mm, ensuring a snug fit without damaging your telescope's finish. The included safety kit, with two 1\" x 4\" straps and four adhesive tabs, prevents the filter from being accidentally dislodged by wind or bumps. The filter's 176mm clear aperture uses most of your telescope's 203mm (8\") aperture for detailed views of the solar disk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the EclipSmart filter fit non-Celestron 8\" telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis filter is custom-designed with a \u003cstrong\u003e225mm internal diameter\u003c\/strong\u003e to fit Celestron 8\" SCT and EdgeHD optical tubes. While it might fit other telescopes with similar dimensions, you must verify the outer diameter of your specific telescope to ensure a safe, secure fit before purchasing. An unsecured filter is extremely dangerous.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the EclipSmart Solar Filter to my NexStar 8SE?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo attach the filter, remove the telescope's lens cap and fit the filter in its place. Stick two of the 1\" x 1\" self-adhesive hook-and-loop tabs on opposite sides of the top surface of the filter, and the other two on the side of the telescope's front cell right next to them. Then use the two 1\" x 4\" straps to connect each pair of tabs. Always check that the filter is secure before pointing the telescope at the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see solar flares or prominences with the EclipSmart filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This is a \u003cstrong\u003ewhite-light solar filter\u003c\/strong\u003e, designed for observing the Sun's surface (photosphere), which includes sunspots, granulation, and planetary transits. Solar flares and prominences are features of the chromosphere and require a specialized, narrow-band Hydrogen-alpha (H-alpha) telescope or filter to be seen.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the 176mm clear aperture and the 225mm internal diameter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e225mm internal diameter\u003c\/strong\u003e refers to the size of the filter's housing, designed to slip over the front of your 8\" telescope. The \u003cstrong\u003e176mm clear aperture\u003c\/strong\u003e is the usable diameter of the solar filter material itself. It is smaller than the 203mm (8\") aperture of the telescope, so the filter slightly reduces the effective aperture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I clean and store my EclipSmart solar filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHold the filter by the outer edges of its plastic cell and avoid touching the filter material. Do not use cleaning chemicals or brushes on the filter material; if it is dusty, blow it clean with compressed air. Small smudges or fingerprints will not affect its performance. Always inspect the filter for scratches or damage before each use. When not in use, store it in its original box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it safe to use this EclipSmart filter for imaging the Sun with my CPC 800?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The EclipSmart filter is safe for both visual observation and solar imaging. Because it fits over the front of the telescope, it rejects the Sun's energy before it enters the optical tube, keeping the internal components cool and safe. You can attach a \u003ca href=\"\/en-int\/collections\/planetary-cameras\"\u003eplanetary camera\u003c\/a\u003e or DSLR to your CPC 800 as you normally would for astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eCelestron 8\" Schmidt-Cassegrain and EdgeHD Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Clear Aperture\u003c\/td\u003e\n\u003ctd\u003e176mm (6.93\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter External Diameter\u003c\/td\u003e\n\u003ctd\u003e235mm (9.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Internal Diameter\u003c\/td\u003e\n\u003ctd\u003e225mm (8.86\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eScratch resistant polymer (American Paper Optics)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eISO Certification\u003c\/td\u003e\n\u003ctd\u003eISO 12312-2:2015(E) Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Image Color\u003c\/td\u003e\n\u003ctd\u003eOrange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.2 oz (121 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness\u003c\/td\u003e\n\u003ctd\u003e32mm (1.26\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Straps\u003c\/td\u003e\n\u003ctd\u003eTwo 1\" x 4\" hook and loop straps, Four 1\" x 1\" hook and loop tabs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e176 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eEclipSmart Solar Filter for 8” Telescopes\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1\" x 4\" Hook and Loop Straps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1\" x 1\" Hook and Loop Tabs\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 4\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron_EclipSmart_Solar_Filters_Manual.pdf?v=1782186981\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload EclipSmart Solar Filters Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967149699357,"sku":"CEL-94244","price":104.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-EclipSmart-Solar-Filter-8-inch-SCT-and-EdgeHD-94244-1__82923.1594229206.1280.1280.jpg?v=1684337272"},{"product_id":"celestron-eclipsmart-10x42-solar-binoculars","title":"Celestron EclipSmart 10X42 Solar Binoculars","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e10x magnification for detailed views of sunspots and solar phenomena\u003c\/li\u003e\n\u003cli\u003e42mm objective lenses with permanently integrated Solar Safe filters\u003c\/li\u003e\n\u003cli\u003eISO 12312-2:2015(E) compliant for direct, safe observation of the Sun\u003c\/li\u003e\n\u003cli\u003e6° angular field of view frames the entire solar disk\u003c\/li\u003e\n\u003cli\u003eLightweight 24 oz (680 g) design for comfortable handheld viewing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCelestron EclipSmart 10x42mm Porro Solar Binoculars\u003c\/h2\u003e\n\u003cp\u003eThe Celestron EclipSmart 10x42mm Porro Solar Binoculars provide safe, direct solar observation with 10x magnification through permanently integrated, ISO 12312-2 certified filters. Their multi-coated 42mm objective lenses and BK7 prisms deliver a high-contrast, neutral-density view of the Sun, while the wide 6° field of view is designed to frame the entire solar disk at once. These water-resistant, 24 oz binoculars are engineered for handheld use, offering a grab-and-go solution for viewing eclipses and tracking sunspot activity without the complexity of separate filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eISO 12312-2 Certified: Safe Solar Viewing with Built-In Filters\u003c\/h3\u003e\n\u003cp\u003eThe core of the EclipSmart 10x42mm binoculars is their non-removable filter system. Unlike external filters that can be accidentally knocked off, these filters are embedded directly into the optical path, ensuring you and your family are always protected from harmful solar radiation, including IR, UV, and 99.999% of visible light. This design meets the stringent ISO 12312-2:2015(E) global safety standard for direct solar viewing, providing total peace of mind during an eclipse or for daily observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e10x42mm Optics: Framing the Entire Sun with 10x Magnification\u003c\/h3\u003e\n\u003cp\u003eThe 10x magnification is powerful enough to show detail in large sunspot groups. Paired with 42mm objective lenses, the system produces a bright 4.2mm exit pupil for a comfortable, high-contrast image. The 6° angular field of view is wide enough to contain the entire Sun, allowing you to watch the full progression of an eclipse without needing to pan the instrument.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Coated Lenses:\u003c\/strong\u003e Increase light transmission and reduce internal reflections, resulting in a sharper, higher-contrast image of the solar disk against a black sky.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBK7 Porro Prisms:\u003c\/strong\u003e This classic prism design offers excellent image fidelity and a rich, three-dimensional viewing experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiopter Adjustment:\u003c\/strong\u003e A range of -4 to +4 on the right eyepiece allows you to precisely compensate for differences between your eyes, ensuring a perfectly focused view for both.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eField-Ready Design: A 24 oz Grab-and-Go Solar Instrument\u003c\/h3\u003e\n\u003cp\u003eWeighing just 24 oz (680 g) and protected by a rubber-armored housing, the EclipSmart binoculars are built for portability. The body is water-resistant, protecting it from morning dew or unexpected light moisture. The interpupillary distance adjusts from 56mm to 72mm to fit a wide range of users, from older children to adults.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyeglass User Accommodation:\u003c\/strong\u003e The 12.7mm of eye relief is functional for many eyeglass wearers, aided by folding rubber eyecups that allow you to get closer to the lenses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandheld Stability:\u003c\/strong\u003e This model is not \u003ca href=\"\/en-int\/collections\/tripods-and-piers\"\u003etripod\u003c\/a\u003e adaptable, a deliberate design choice that emphasizes its role as a quick-look, handheld instrument for tracking solar events without the burden of extra equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEclipSmart Binoculars vs. Telescopes with Solar Filters: Convenience and Safety\u003c\/h3\u003e\n\u003cp\u003eWhile a solar-filtered telescope will offer higher magnification for studying fine details, the EclipSmart 10x42mm binoculars provide a different set of advantages that make them an essential tool for any solar observer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltimate Convenience:\u003c\/strong\u003e There is no setup time. Simply remove the lens caps, and you are ready to observe instantly. This is invaluable for catching fleeting moments or for casual daily checks of sunspot activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInherent Safety:\u003c\/strong\u003e With a telescope, you must correctly and securely attach a separate \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e. The EclipSmart's integrated filters eliminate the single most common point of failure and danger in solar observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWider Field of View:\u003c\/strong\u003e The 6° field of view is far wider than what most telescopes can provide at useful magnifications, making it easier to find and track the Sun and to appreciate the full context of an eclipse.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I actually see on the Sun with the EclipSmart 10x42mm binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith 10x magnification, you can easily see the full disk of the Sun and track the progress of a solar eclipse. On active days, you will be able to identify and resolve larger sunspot groups, seeing them as distinct dark patches against the bright solar surface. You will not see solar flares or prominences, as those require specialized \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003eH-alpha telescopes\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the EclipSmart 10x42mm binoculars compare to using solar filters on regular binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage of the EclipSmart 10x42mm is safety. The solar filters are permanently built-in and cannot be accidentally removed or fall off while viewing. This integrated design is tested to meet the ISO 12312-2:2015(E) standard, a certification that may not apply to third-party, add-on filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the EclipSmart 10x42mm binoculars comfortable for eyeglass wearers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe binoculars have 12.7mm of eye relief. While some users with thick glasses may find this tight, the fold-down rubber eyecups are designed to help eyeglass wearers position their eyes close enough to see most of the 6° field of view. For most users, they are perfectly comfortable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I mount the EclipSmart 10x42mm binoculars on a tripod?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this model is not designed to be tripod adaptable. At a weight of 24 oz (680 g), it is light enough for comfortable, stable handheld viewing for the short periods typically involved in solar observation. They are intended as a true \"grab-and-go\" instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"white-light\" view of the Sun look like through the EclipSmart 10x42mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese are \"white-light\" solar binoculars, meaning they show the Sun in its true color, which appears as a neutral, high-contrast, black-and-white image. The view is similar to what you would see in professional observatory photos, not an artificial orange or red color.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDuring a total solar eclipse, when can I safely look without the EclipSmart 10x42mm binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must use the EclipSmart 10x42mm binoculars (or other certified eye protection) during all partial phases of the eclipse. It is only safe to look with the naked eye during the brief period of \u003cstrong\u003etotality\u003c\/strong\u003e, when the Moon completely blocks the Sun. The moment the Sun begins to reappear, you must immediately go back to using your certified solar protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e10x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObjective Lens Diameter\u003c\/td\u003e\n\u003ctd\u003e42mm (1.65\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAngular Field of View\u003c\/td\u003e\n\u003ctd\u003e6°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinear Field of View\u003c\/td\u003e\n\u003ctd\u003e315 ft @ 1000 yds (105 m @ 1000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExit Pupil\u003c\/td\u003e\n\u003ctd\u003e4.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003e12.7mm (0.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterpupillary Distance\u003c\/td\u003e\n\u003ctd\u003e56mm - 72mm (2.20\" - 2.83\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiopter Adjustment\u003c\/td\u003e\n\u003ctd\u003e-4 to +4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Coatings\u003c\/td\u003e\n\u003ctd\u003eMulti-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003eBK7 Porro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e24 oz (680 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e173mm x 74mm x 137mm (6.8\" x 2.9\" x 5.4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eWater Resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrogen Filled\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod Adaptable\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Padded Soft Carrying Case\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-eclipsmart-10x42-solar-binoculars-case.jpg?v=1782200155\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSoft Carry Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Celestron Binocular Strap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-outland-x-binocular-strap.jpg?v=1782200155\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBinocular Strap\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Binocular Eyepiece Covers\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-upclose-g2-binocular-eyepiece-covers.jpg?v=1782200155\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eEyepiece Covers\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Binocular Objective Lens Covers\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-upclose-g2-binocular-objective-covers.jpg?v=1782200155\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eObjective Covers\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Lens Cleaning Cloth\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-lens-cleaning-cloth.jpg?v=1782200155\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eLens Cleaning Cloth\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cimg class=\"DAV-img-box\" alt=\"Quick Setup Guide\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-quick-setup-guide.jpg?v=1782200155\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Setup Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron_Eclipsmart_Solar_Binoculars_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload EclipSmart Solar Binoculars Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.celestron.com\/pages\/drivers-and-software\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Celestron Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967179419933,"sku":"CEL-71238","price":125.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-EclipSmart-10x42-Binoculars-71238-1__84334.1599615582.1280.1280.jpg?v=1684338206"},{"product_id":"baader-solar-continuum-filter","title":"Baader Solar Continuum Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eMaximizes contrast on solar granulation, faculae, and sunspot details\u003c\/li\u003e\n\u003cli\u003eDramatically reduces chromatic aberration in achromatic refractors\u003c\/li\u003e\n\u003cli\u003eFunctions as a secondary filter, requiring a primary white-light solar filter for safe use\u003c\/li\u003e\n\u003cli\u003eAvailable in standard 1.25\" and 2\" round mounted formats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader Solar Continuum Filter\u003c\/h2\u003e\n\u003cp\u003eThe Baader Solar Continuum Filter, available in both 1.25\" and 2\" formats, isolates the narrow spectral region where solar granulation and sunspot details exhibit maximum contrast. By blocking unfocused wavelengths, this filter dramatically sharpens the image in \u003ca href=\"\/en-int\/collections\/achromatic-refractors\"\u003eachromatic refractors\u003c\/a\u003e, making it an essential tool for high-resolution white-light solar observation in either the 1.25\" or 2\" size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating the Solar Continuum: Maximizing Contrast on Granulation and Faculae\u003c\/h3\u003e\n\u003cp\u003eThis filter works by isolating a very specific slice of the solar spectrum, effectively removing the visual noise from other wavelengths. This narrowband approach reveals the intricate, fine structure of the photosphere that is normally washed out. With the Solar Continuum filter, you can clearly resolve the boiling pattern of solar granulation, see bright faculae stand out against the solar limb, and discern the complex details within sunspot penumbrae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Achromat's Best Friend: Eliminating Chromatic Aberration for Sharper Solar Views\u003c\/h3\u003e\n\u003cp\u003eAchromatic refractors, while excellent instruments, suffer from chromatic aberration—a purple or blue halo of unfocused light that softens the image. The Baader Solar Continuum filter completely eliminates this issue for solar viewing. By transmitting only a narrow band of light where the \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e's optics are sharpest, it delivers a view that is free of color fringing, transforming the performance of an achromat to near-apochromatic levels for solar observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eContinuum Filter vs. White-Light Film: A Side-by-Side Comparison\u003c\/h3\u003e\n\u003cp\u003eA standard white-light \u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003esolar film\u003c\/a\u003e provides a safe, full-spectrum view of the sun. The Baader Solar Continuum filter is not a substitute for this primary filter; it is an enhancement used in conjunction with it. While the film alone shows sunspots, the addition of the Continuum filter reveals a new level of detail, making it an indispensable tool for serious solar observers seeking the highest possible contrast and resolution.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard White-Light Filter:\u003c\/strong\u003e Shows sunspots and basic solar features. Can appear soft in achromatic refractors due to chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWith Solar Continuum Filter Added:\u003c\/strong\u003e Reveals fine granulation across the solar disk, enhances bright faculae, and resolves intricate details in sunspot structure. The view becomes significantly sharper and more detailed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader Solar Continuum Filter safe to use by itself?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eABSOLUTELY NOT.\u003c\/strong\u003e The Solar Continuum Filter is a secondary filter and must always be used with a primary, front-mounted, professional-grade solar filter like Baader AstroSolar Safety Film. Using this filter alone will cause instant and permanent eye damage and destroy your equipment. It only enhances the view from a telescope that has already been made safe for solar viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat specific features does the Baader Solar Continuum Filter enhance?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis filter is designed to dramatically increase the contrast of features in the Sun's photosphere. You will see a significant improvement in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar Granulation:\u003c\/strong\u003e The \"boiling rice\" texture of the solar surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaculae:\u003c\/strong\u003e Bright, hot regions, especially visible near the solar limb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSunspot Structure:\u003c\/strong\u003e The dark umbra and the filamentary penumbra of sunspots become much sharper and more detailed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have an 80mm f\/7 achromatic refractor. How will the Baader Solar Continuum Filter improve my view of sunspot group AR 3664?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor your telescope, the improvement will be dramatic. The filter will completely eliminate the purple fringe (chromatic aberration) that softens the view in your achromat. This will make the contrast between the sunspot's dark umbra and its lighter, detailed penumbra much more distinct, allowing you to resolve finer structures within the sunspot group.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader Solar Continuum Filter with my reflector or SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While the most significant benefit is seen in achromatic refractors due to its ability to cut chromatic aberration, the filter still provides a noticeable contrast boost in any telescope type, including \u003ca href=\"\/en-int\/collections\/reflectors\"\u003ereflectors\u003c\/a\u003e, \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSCTs\u003c\/a\u003e, and \u003ca href=\"\/en-int\/collections\/apochromatic-refractors\"\u003eapochromatic refractors\u003c\/a\u003e. By isolating the ideal spectral region, it enhances photospheric detail regardless of the optical design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader Solar Continuum Filter perform for imaging the Sun with a monochrome camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is an outstanding filter for high-resolution solar imaging with a monochrome camera. By isolating a narrow band of the spectrum, it reduces the blurring effects of atmospheric turbulence (seeing), similar to how planetary imagers use color filters. This results in significantly sharper, higher-contrast images of granulation and sunspots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between the 1.25\" and 2\" Baader Solar Continuum Filter options?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe optical performance and filtering effect are identical between the two. The only difference is the physical size of the filter cell. You should choose the size that matches your \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepieces\u003c\/a\u003e, \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonals\u003c\/a\u003e, or camera nosepiece, either \u003cstrong\u003e1.25\"\u003c\/strong\u003e or \u003cstrong\u003e2\"\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003e1.25\" Round Mounted, 2\" Round Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle or Set?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter mounted\u003c\/td\u003e\n\u003ctd\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Usage\u003c\/td\u003e\n\u003ctd\u003eCMOS, Contrast Enhancement, Solar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Filter\u003c\/td\u003e\n\u003ctd\u003eNarrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHBW (Halfbandwidth)\u003c\/td\u003e\n\u003ctd\u003e7.5 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd\u003e540 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003e535 – 545 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eReflex-Blocker™ hard coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Solar Continuum Filter (in selected size)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty Policy\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"1.25\" Round Mounted","offer_id":44967364722973,"sku":"BAA-2961580","price":172.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Round Mounted","offer_id":44967364755741,"sku":"BAA-2961581","price":289.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Solar-Continuum-Filter-1__25543.1597110995.1280.1280.jpg?v=1684341370"},{"product_id":"baader-astrosolar-safety-film-od-5-0-eco-size-20x29cm-100x50cm-117x117cm","title":"Baader Astrosolar Safety Film OD 5.0","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOptical Density 5.0 for safe, direct visual solar observation\u003c\/li\u003e\n\u003cli\u003eDoes not degrade optical wavefront, preserving sharpness and contrast\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple sizes for custom filters, from 140mm to 117cm\u003c\/li\u003e\n\u003cli\u003eRenders the sun in a neutral, realistic white color\u003c\/li\u003e\n\u003cli\u003eTrusted by astronomers for over 25 years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader AstroSolar Safety Film OD 5.0\u003c\/h2\u003e\n\u003cp\u003eFor over 25 years, Baader AstroSolar Safety Film has been the standard for creating high-resolution, do-it-yourself \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filters\u003c\/a\u003e. With a certified Optical Density of 5.0, this film reduces sunlight intensity by 99.999%, making direct observation of the sun completely safe through any telescope, \u003ca href=\"\/en-int\/collections\/binoculars\"\u003ebinocular\u003c\/a\u003e, or camera. Unlike other filter materials that impair image quality, AstroSolar is engineered to be optically flat, ensuring your instrument performs at its full magnification and resolving power on the solar surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCertified OD 5.0 Safety for Direct Solar Viewing\u003c\/h3\u003e\n\u003cp\u003eThe primary function of a solar filter is safety, and AstroSolar Film delivers with a certified Optical Density (OD) of 5.0. This rating confirms that the film blocks 99.999% of all incoming solar energy, including harmful UV and IR radiation, allowing you to view sunspots, transits, and eclipses without risk. The film's reflective properties dissipate solar energy before it enters your optics, preventing heat buildup inside your telescope tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUncompromised Optical Quality: Retain Full Sharpness and Contrast\u003c\/h3\u003e\n\u003cp\u003eWhat sets Baader AstroSolar Film apart is its ability to transmit a clean, unaltered optical wavefront. Cheaper films or dense glass can introduce astigmatism and other aberrations, effectively degrading your telescope's performance. AstroSolar's unique molecular structure maintains the sharpness and contrast of your optics, allowing you to push the magnification to resolve fine details like solar granulation, faculae, and the intricate structure within sunspot umbrae and penumbrae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBuild a Custom Filter for Any Optic up to 117cm\u003c\/h3\u003e\n\u003cp\u003eAstroSolar Safety Film is a DIY material, supplied in sheets that you can use to construct a custom-fit filter for any optical instrument. With sizes ranging from a 140x155mm \"Eco\" sheet, perfect for \u003ca href=\"\/en-int\/collections\/camera-lenses-and-adapters\"\u003ecamera lenses\u003c\/a\u003e or small \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e, up to a massive 117x117cm sheet for large observatory-class telescopes, there is an option for every aperture. Building your own filter cell is a straightforward project that results in a lightweight, high-performing filter for a fraction of the cost of a pre-made glass equivalent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAstroSolar Film vs. Welder's Glass: The Optical Difference\u003c\/h3\u003e\n\u003cp\u003eWhile often considered as a low-cost alternative, welder's glass is designed for protecting eyes from arc flashes, not for preserving the optical precision of a telescope. It severely degrades image sharpness, introduces a strong green color cast, and is not certified for the specific radiation spectrum of the sun. AstroSolar Film provides a true neutral-white image of the sun and is specifically manufactured to the optical tolerances required for high-magnification astronomical work, making it the only serious choice for detailed solar observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader AstroSolar Safety Film OD 5.0 safe for looking directly at the sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The \u003cstrong\u003eOptical Density 5.0\u003c\/strong\u003e rating means it is certified for direct visual observation of the sun through a telescope, binoculars, or with the naked eye, provided it has been mounted securely in a proper filter cell. It blocks 99.999% of sunlight, including all harmful UV and IR radiation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat color is the sun when viewed through the Baader AstroSolar Safety Film OD 5.0?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe sun appears as a \u003cstrong\u003eneutral, realistic white\u003c\/strong\u003e. Unlike some films or glass filters that produce an unnatural orange or yellow image, AstroSolar Film is designed for color neutrality, allowing you to see the true color of sunspots and the solar photosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I build a filter cell for my 8\" SCT using the Baader AstroSolar Film?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor an 8\" (203mm) \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrain Telescope\u003c\/a\u003e, the A4 sheet (20x29cm) is too narrow to cover the full aperture plus a cell, so use a larger sheet such as the 100x50cm size. You can construct a cell using cardboard, foam board, or 3D-printed parts. The key is to create a secure housing that fits over the front of your telescope, ensuring the film is held in place without being overly stretched, as slight wrinkles are normal and do not affect optical quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see solar granulation and sunspot details with the Baader AstroSolar Film OD 5.0?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This is the primary advantage of AstroSolar Film. Because it does not degrade the optical wavefront, it allows your telescope to perform at its maximum resolution. On days of good seeing, you can easily resolve \u003cstrong\u003esolar granulation\u003c\/strong\u003e, faculae, and fine details within sunspot groups, something not possible with lower-quality filter materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eShould the Baader AstroSolar Film be perfectly flat and tight like a drumhead?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, and you should avoid stretching it tight. The film should be mounted so that it is secure but relaxed, with slight ripples or wrinkles visible. These minor imperfections have no effect on the optical quality. Stretching the film taut can actually degrade its optical properties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I clean and care for my filter made with Baader AstroSolar Safety Film?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe film is delicate. To clean it, use a soft, lint-free cloth (like a microfiber cloth) and a gentle \u003ca href=\"\/en-int\/collections\/cleaning-supplies\"\u003ecleaning solution\u003c\/a\u003e suitable for optics, such as isopropyl alcohol diluted with distilled water. Dab gently; do not rub. Always inspect the film for scratches, pinholes, or tears before every use. If any damage is found, discard the filter immediately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density (OD)\u003c\/td\u003e\n\u003ctd\u003e5.0 (for visual use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Reduction\u003c\/td\u003e\n\u003ctd\u003e99.999%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003eEco: 140x155mm\u003cbr\u003eA4: 20x29cm (7.9\"x11.4\")\u003cbr\u003eRoll: 100x50cm (39.4\"x19.7\")\u003cbr\u003eMax: 117x117cm (46\"x46\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.02 (Eco size 140x155mm, 100x50cm (39.4\"x19.7\"))\u003cbr\u003e0.04 (A4 Sheet 20x29cm (7.9\"x11.4\"), 117x117cm (46\"x46\"))\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003eca. 140 x 155 mm (Eco size 140x155mm)\u003cbr\u003eca. 20 x 29 cm (A4 Sheet 20x29cm (7.9\"x11.4\"))\u003cbr\u003eca. 100 x 50 cm (100x50cm (39.4\"x19.7\"))\u003cbr\u003eca. 117 x 117 cm (117x117cm (46\"x46\"))\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation and imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstroSolar Film\u003c\/td\u003e\n\u003ctd\u003eAstroSolar Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader AstroSolar Safety Film (Sheet of selected size)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_AstroSolar_Filter_v1.7_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium AstroSolar Filter v1.7 Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Safe_Eclipse_Viewing_Camera_Obscura_Guide.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Safe Eclipse Viewing Camera Obscura Guide\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_How_to_Make_a_Solar_Filter_for_Cameras_Binoculars_and_Telescopes.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium How to Make a Solar Filter for Cameras Binoculars and Telescopes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_AstroSolar_Film_Usage_Instructions.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium AstroSolar Film Usage Instructions\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_How_to_Build_Your_Own_AstroSolar_Filter.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium How to Build Your Own AstroSolar Filter\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Eco size 140x155mm","offer_id":44967378354461,"sku":"BAA-2459286","price":24.0,"currency_code":"CAD","in_stock":true},{"title":"A4 Sheet 20x29cm (7.9\"x11.4\")","offer_id":44967378387229,"sku":"BAA-2459281","price":43.0,"currency_code":"CAD","in_stock":true},{"title":"100x50cm (39.4\"x19.7\")","offer_id":44967378419997,"sku":"BAA-2459282","price":132.0,"currency_code":"CAD","in_stock":true},{"title":"117x117cm (46\"x46\")","offer_id":44967378452765,"sku":"BAA-2459284","price":459.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Astrosolar-Safety-Film-OD-5-0-1__84410.1597111100.1280.1280.jpg?v=1684341429"},{"product_id":"baader-astrosolar-binocular-filter-od-5-0-50-100mm","title":"Baader AstroSolar Binocular Filter OD 5.0 - 50-100mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOptical Density 5.0 AstroSolar Safety Film\u003c\/li\u003e\n\u003cli\u003eEnables direct, safe viewing of the Sun\u003c\/li\u003e\n\u003cli\u003eAvailable in 50mm, 60mm, 70mm, 80mm, and 100mm clear aperture models\u003c\/li\u003e\n\u003cli\u003eProduces a neutral-density, white-light image of the solar disk\u003c\/li\u003e\n\u003cli\u003eSecure, non-damaging fit for a wide range of binocular tube diameters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader AstroSolar Binocular Filter OD 5.0 - 50-100mm\u003c\/h2\u003e\n\u003cp\u003eThe Baader AstroSolar \u003ca href=\"\/en-int\/collections\/binoculars\"\u003eBinocular\u003c\/a\u003e Filter provides Optical Density 5.0 protection, essential for safely observing the Sun with binoculars ranging from 50mm to 100mm in aperture. This rating ensures that 99.999% of sunlight is blocked before it enters your optics, allowing you to directly view sunspots, planetary transits, and solar eclipses without risk. Each filter size is engineered to securely grip a specific range of binocular tube outer diameters, accommodating instruments with tubes from 55mm up to 120mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAstroSolar Film: OD 5.0 Safety for Direct Observation\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this filter is Baader's renowned AstroSolar Safety Film, which has set the standard for white-light solar observation. Unlike many glass filters that can degrade image sharpness, this streak-free and blister-free film provides optical quality that rivals high-end glass filters, but without the associated weight or cost. The OD 5.0 rating is certified for direct solar viewing, presenting the Sun in its true, neutral-white color and revealing fine details in sunspot umbrae and granulation on the solar surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Secure Fit for Binocular Tubes from 55mm to 120mm\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for binoculars, these filters feature a robust cell that ensures a secure, slip-free fit on your instrument's objective barrels. Each aperture size—from 50mm to 100mm—is built to accommodate a wide range of tube diameters, from 55mm up to 120mm depending on the model selected. This adjustable, non-marring grip provides peace of mind that the filter will not accidentally fall off during use, which is a critical safety requirement for any solar observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does OD 5.0 mean for the Baader AstroSolar Binocular Filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eOptical Density (OD) 5.0\u003c\/strong\u003e means the filter reduces the intensity of sunlight by a factor of 100,000 (blocking 99.999% of the light). This is the internationally recognized standard for safe, direct visual observation of the Sun's photosphere. Anything less than OD 5.0 is unsafe for visual use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I choose the right size Baader AstroSolar filter for my binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must measure the \u003cstrong\u003eouter diameter (OD)\u003c\/strong\u003e of the front of your binocular barrels, not the aperture of the lenses. Compare your measurement to the fit ranges provided for each filter size. For example, the 60mm filter fits tubes with an outer diameter of 65-80mm. Always choose the filter size where your measurement falls comfortably within its specified range for a secure fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see solar flares or prominences with the Baader AstroSolar Binocular Filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This is a white-light filter designed for observing the Sun's surface (photosphere), including features like sunspots and granulation. Viewing solar flares and prominences requires a specialized, narrow-band Hydrogen-alpha (H-alpha) filter, which is a much more complex and expensive optical system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to buy one or two Baader AstroSolar filters for my binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYou absolutely must buy two identical filters\u003c\/strong\u003e, one for each objective lens of your binoculars. Using a filter on only one side is extremely dangerous, as your unfiltered eye will still be exposed to the Sun's harmful, focused rays. This product is sold as a single unit, so you will need to add two to your cart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat will the Sun look like through the Baader AstroSolar Binocular Filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Sun will appear as a sharp, detailed, and neutral-white disk against a black sky. You will be able to clearly see sunspot groups, distinguishing between the darker central umbra and the lighter surrounding penumbra. During periods of good atmospheric seeing, you may also resolve the texture of solar granulation across the surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader AstroSolar filter film ever need to be replaced?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the film should be inspected for scratches, pinholes, or damage before every use. If you find any defect that allows concentrated light to pass through, you must discard the filter immediately. With proper care and storage, the film can last for many years, but it is not permanent and its integrity is crucial for your safety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003e5.0 (99.999% light reduction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Clear Apertures\u003c\/td\u003e\n\u003ctd\u003e50mm, 60mm, 70mm, 80mm, 100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Image Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilm Type\u003c\/td\u003e\n\u003ctd\u003eAstroSolar Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.07 (50mm, 60mm, 70mm)\u003cbr\u003e0.08 (80mm)\u003cbr\u003e0.09 (100mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e110 (50mm)\u003cbr\u003e120 (60mm)\u003cbr\u003e130 (70mm)\u003cbr\u003e140 (80mm)\u003cbr\u003e160 (100mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation and imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Clampingrange (13mm bolts)\u003c\/td\u003e\n\u003ctd\u003e55 – 70 (50mm)\u003cbr\u003e65 – 80 (60mm)\u003cbr\u003e75 – 90 (70mm)\u003cbr\u003e85 – 100 (80mm)\u003cbr\u003e105 – 120 (100mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e50 mm, 60 mm, 70 mm, 80 mm, 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSolar filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e3 centering bolts, 13 mm dia x 24 mm height\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e3 safety straps with glue-pads\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003emounting instructions\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_AstroSolar_Filter_v1.7_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium AstroSolar Filter v1.7 Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Safe_Eclipse_Viewing_Camera_Obscura_Guide.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Safe Eclipse Viewing Camera Obscura Guide\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"50mm","offer_id":44967378747677,"sku":"BAA-2459325","price":67.0,"currency_code":"CAD","in_stock":true},{"title":"60mm","offer_id":44967378780445,"sku":"BAA-2459326","price":79.0,"currency_code":"CAD","in_stock":true},{"title":"70mm","offer_id":44967378813213,"sku":"BAA-2459327","price":86.0,"currency_code":"CAD","in_stock":true},{"title":"80mm","offer_id":44967378845981,"sku":"BAA-2459328","price":97.0,"currency_code":"CAD","in_stock":true},{"title":"100mm","offer_id":44967378878749,"sku":"BAA-2459329","price":117.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-AstroSolar-Binocular-Filter-OD-5-0-50-100mm-2__80285.1597111102.1280.1280.jpg?v=1684341687"},{"product_id":"baader-astrosolar-spotting-scope-filter-od-5-0-50-150mm","title":"Baader AstroSolar Spotting Scope Filter OD 5.0 - 50-150mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOptical Density 5.0 for safe, direct solar viewing\u003c\/li\u003e\n\u003cli\u003eAvailable in 7 sizes from 50mm to 150mm\u003c\/li\u003e\n\u003cli\u003eFits spotting scopes, binoculars, and small telescopes\u003c\/li\u003e\n\u003cli\u003eStress-free AstroSolar film provides sharp, high-contrast images\u003c\/li\u003e\n\u003cli\u003eAdjustable centering bolts ensure a secure, centered fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader AstroSolar Spotting Scope Filter OD 5.0 - 50-150mm\u003c\/h2\u003e\n\u003cp\u003eThe Baader AstroSolar \u003ca href=\"\/en-int\/collections\/spotting-scopes\"\u003eSpotting Scope\u003c\/a\u003e Filter transforms your daytime optics into a dedicated solar instrument, using Baader's renowned AstroSolar film to provide certified Optical Density 5.0 protection. Available in seven sizes to fit optical tubes from 50mm to 150mm in aperture, this filter delivers neutral white-light views of the Sun, revealing sunspots, surface granulation, and solar eclipses with exceptional clarity. The filter's design prioritizes safety and a secure fit, allowing you to observe the Sun with complete confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAstroSolar Film: Certified OD 5.0 Protection for Your Eyes\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this filter is Baader's AstroSolar safety film, which achieves an optical density of 5.0, blocking 99.999% of incoming sunlight before it enters your optics. This level of attenuation is essential for direct, visual observation of the solar photosphere. Unlike many glass filters that produce a color-cast, AstroSolar film provides a neutral, white-light image, rendering sunspots and granulation in their true, high-contrast form.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAdjustable Mounting: A Secure Fit for Tubes from 55mm to 218mm\u003c\/h3\u003e\n\u003cp\u003eA \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e is only safe if it's securely attached. The Baader AstroSolar Spotting Scope Filter includes three adjustable centering bolts that grip the outer or inner diameter of your instrument's front cell for a firm, centered fit. This versatile system allows each of the seven filter sizes (50mm to 150mm) to accommodate a wide range of tube diameters, ensuring a custom fit for your specific spotting scope, \u003ca href=\"\/en-int\/collections\/binoculars\"\u003ebinocular\u003c\/a\u003e, or small telescope. For added security, safety straps are included to prevent the filter from being accidentally dislodged.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I choose the correct size Baader AstroSolar Spotting Scope Filter for my instrument?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must measure the \u003cstrong\u003eouter diameter (OD)\u003c\/strong\u003e of the front of your telescope or spotting scope tube. Each Baader AstroSolar filter size (e.g., 80mm, 100mm) is designed to fit a specific range of tube diameters. Match your measurement to the corresponding filter size to ensure a secure fit with the included centering bolts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the OD 5.0 Baader AstroSolar filter safe for direct viewing of the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes, absolutely.\u003c\/strong\u003e An Optical Density (OD) of 5.0 is the international standard for safe, direct visual observation of the Sun. It blocks 99.999% of the Sun's energy, including harmful UV and IR radiation, reducing the intense light to a comfortable level for your eyes when placed over the front of your optics. Never observe the Sun without a properly fitted, certified solar filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I see on the Sun with the Baader AstroSolar Spotting Scope Filter and my 80mm spotting scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith an 80mm spotting scope, the Baader AstroSolar Filter will clearly show you the dynamic surface of the Sun in white light. You can expect to see:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSunspots:\u003c\/strong\u003e Dark, complex regions on the solar surface, often appearing in groups. You can track their movement from day to day as the Sun rotates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFaculae:\u003c\/strong\u003e Bright, blotchy areas that are often visible near the solar limb (edge).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGranulation:\u003c\/strong\u003e With steady seeing conditions, you may be able to resolve the mottled, rice-grain-like pattern of the solar surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar Eclipses:\u003c\/strong\u003e The filter is perfect for safely watching all phases of a solar eclipse.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Baader AstroSolar filter for photography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis OD 5.0 filter is primarily designed for visual use. While you can take afocal images (holding a camera to the \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e), the dim view requires longer exposures, which can be challenging for high-magnification \u003ca href=\"\/en-int\/collections\/planetary-cameras\"\u003eplanetary cameras\u003c\/a\u003e. For dedicated high-resolution solar imaging, Baader offers a separate, brighter AstroSolar Photo Film (OD 3.8) which allows for much shorter exposure times.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Baader AstroSolar Spotting Scope Filter securely?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward. The filter comes with three centering bolts that you position to grip your scope's tube. You adjust them for a snug, centered fit. For maximum safety, especially during public outreach or in windy conditions, you should also use the included safety straps to create a secondary attachment point, ensuring the filter cannot be knocked off accidentally.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader AstroSolar Filter to watch a solar eclipse or the transit of Mercury?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Baader AstroSolar Spotting Scope Filter is ideal for observing these celestial events. It provides a safe and detailed view of the Moon's silhouette moving across the Sun during an eclipse, or the tiny, sharp disk of Mercury or Venus during a transit. It allows you to safely watch all partial phases of an eclipse from start to finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eWhite-Light Solar Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Aperture Sizes\u003c\/td\u003e\n\u003ctd\u003e50mm, 65mm, 80mm, 100mm, 115mm, 130mm, 150mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.07 (50mm) 0.08 (65mm, 80mm) 0.09 (100mm) 0.10 (115mm) 0.15 (130mm) 0.16 (150mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e110 (50mm)\u003cbr\u003e125 (65mm)\u003cbr\u003e140 (80mm)\u003cbr\u003e160 (100mm)\u003cbr\u003e175 (115mm)\u003cbr\u003e210 (130mm)\u003cbr\u003e230 (150mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation and imaging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAstroSolar Film\u003c\/td\u003e\n\u003ctd\u003eAstroSolar Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Clampingrange (13mm bolts)\u003c\/td\u003e\n\u003ctd\u003e55 – 70 (50mm)\u003cbr\u003e70 – 85 (65mm)\u003cbr\u003e85 – 100 (80mm)\u003cbr\u003e105 – 120 (100mm)\u003cbr\u003e120 – 135 (115mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Clampingrange (13mm bolts)\u003c\/td\u003e\n\u003ctd\u003e81 – 96 (50mm)\u003cbr\u003e96 – 111 (65mm)\u003cbr\u003e111 – 126 (80mm)\u003cbr\u003e131 – 146 (100mm)\u003cbr\u003e146 – 161 (115mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Clampingrange (10mm bolts)\u003c\/td\u003e\n\u003ctd\u003e148 – 178 (130mm)\u003cbr\u003e168 – 198 (150mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Clampingrange (10mm bolts)\u003c\/td\u003e\n\u003ctd\u003e168 – 198 (130mm)\u003cbr\u003e188 – 218 (150mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e50 mm, 65 mm, 80 mm, 100 mm, 115 mm, 130 mm, 150 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSpotter filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e3 centering bolts (13 mm dia x 24 mm for 50-100 mm; 10 mm dia x 38 mm for 115 and 130 mm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e3 safety straps with glue-pads\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e32-page mounting instructions\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_AstroSolar_Filter_v1.7_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium AstroSolar Filter v1.7 Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Safe_Eclipse_Viewing_Camera_Obscura_Guide.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Safe Eclipse Viewing Camera Obscura Guide\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"50mm","offer_id":44967379173661,"sku":"BAA-2459335","price":69.0,"currency_code":"CAD","in_stock":true},{"title":"65mm","offer_id":44967379206429,"sku":"BAA-2459336","price":82.0,"currency_code":"CAD","in_stock":true},{"title":"80mm","offer_id":44967379239197,"sku":"BAA-2459337","price":97.0,"currency_code":"CAD","in_stock":true},{"title":"100mm","offer_id":44967379271965,"sku":"BAA-2459338","price":118.0,"currency_code":"CAD","in_stock":true},{"title":"115mm","offer_id":44967379304733,"sku":"BAA-2459339","price":127.0,"currency_code":"CAD","in_stock":true},{"title":"130mm","offer_id":44967379337501,"sku":"BAA-2459340","price":149.0,"currency_code":"CAD","in_stock":true},{"title":"150mm","offer_id":44967379370269,"sku":"BAA-2459341","price":175.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-AstroSolar-Spotting-Scope-Filter-OD-5-0-50-150mm-2__24030.1597111104.1280.1280.jpg?v=1684341693"},{"product_id":"baader-astrosolar-telescope-filter-od-5-0-80-280mm","title":"Baader AstroSolar Telescope Filter OD 5.0 - 80-280mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables safe, high-resolution solar viewing and imaging\u003c\/li\u003e\n\u003cli\u003eOptical Density 5.0, blocking 99.999% of sunlight\u003c\/li\u003e\n\u003cli\u003eAvailable in apertures from 80mm to 280mm\u003c\/li\u003e\n\u003cli\u003eTemperature-compensated cell ensures optical quality from -30°C to +50°C\u003c\/li\u003e\n\u003cli\u003eStress-free film mounting preserves diffraction-limited resolution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader AstroSolar Telescope Filter OD 5.0 - 80-280mm\u003c\/h2\u003e\n\u003cp\u003eThe Baader AstroSolar Telescope Filter delivers diffraction-limited solar views by mounting genuine AstroSolar Safety Film (OD 5.0) in a cell engineered to eliminate mechanical stress. Available in sizes from 80mm to 280mm, this filter maintains its optical figure across a wide temperature range, from -30°C to +50°C. Each filter includes two sets of adjustable centering pins (10mm and 20mm diameter) and three safety straps, ensuring a secure fit to your telescope's tube or \u003ca href=\"\/en-int\/collections\/dew-prevention-and-control\"\u003edew shield\u003c\/a\u003e for uncompromising safety and image sharpness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDiffraction-Limited Views: The Stress-Free OD 5.0 AstroSolar Film Cell\u003c\/h3\u003e\n\u003cp\u003eUnlike DIY or improperly mounted filters that stretch the film taut like a drumhead, Baader's ASTF filters mount the OD 5.0 AstroSolar film with zero tension. This proprietary, temperature-compensated cell allows the film to \"float,\" preserving its sub-micron surface accuracy and acting as a high-precision optical window. The result is the ability to resolve fine solar details like granulation and sunspot penumbrae, which are often blurred into mush by the microscopic distortions induced by a stretched film.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUniversal Mounting with 10mm \u0026amp; 20mm Centering Pins\u003c\/h3\u003e\n\u003cp\u003eEach ASTF filter ensures a secure, centered fit on a wide range of telescope tubes and dew shields. The package includes two sets of 38mm long centering pins—three with a 10mm diameter and three with a 20mm diameter—that slide into the filter's aluminum frame. This adjustable system, combined with the included safety straps, provides a reliable, non-slip attachment to your instrument, preventing accidental dislodging during observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBaader ASTF vs. DIY Filters: Why Wrinkles Equal Sharpness\u003c\/h3\u003e\n\u003cp\u003eA common misconception is that \u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003esolar film\u003c\/a\u003e should look perfectly flat like a glass filter. In reality, the slight waves and wrinkles visible in the AstroSolar film are proof that it is mounted correctly and free from tension. When film is stretched to look flat, it introduces astigmatism and other aberrations that degrade the image at the focal plane. The Baader ASTF filter cell is purpose-built to maintain this crucial, stress-free state, delivering image quality that stretched, DIY filters cannot match at high magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader AstroSolar OD 5.0 filter safe for looking at the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely.\u003c\/strong\u003e The \"OD 5.0\" designation means the filter has an Optical Density of 5.0, which blocks 99.999% of all sunlight, including harmful UV and IR radiation. This makes it completely safe for direct visual observation and photography, provided it is mounted securely to the front of your telescope and is free of any pinholes or damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the film on my Baader AstroSolar filter look wrinkled?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe wrinkles are a sign that the filter is working correctly. Baader's design intentionally mounts the AstroSolar film without any tension. This stress-free state is essential to preserve the film's diffraction-limited optical quality. Stretching the film to make it look flat would introduce distortions and ruin high-magnification views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I choose the right size Baader AstroSolar filter for my 8-inch SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need to measure the outer diameter (OD) of your telescope's front cell or dew shield. For an 8\" SCT, this is typically around 9.25\" or 235mm. You would select the Baader ASTF 200mm filter, which is designed for tube ODs from 220-260mm. Always choose the filter size that allows the centering pins to grip the outside of your telescope tube securely. Refer to the specific fitment range for each filter size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader AstroSolar OD 5.0 filter for photography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the OD 5.0 AstroSolar filter is excellent for both visual observation and high-resolution solar photography (white-light). It allows for short exposure times necessary to \"freeze\" atmospheric seeing, making it ideal for capturing sunspots, faculae, and solar granulation with a \u003ca href=\"\/en-int\/collections\/planetary-cameras\"\u003eplanetary camera\u003c\/a\u003e or DSLR.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this Baader filter and a cheaper glass solar filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBaader's AstroSolar film provides superior optical quality to most affordable glass filters. The film is manufactured to diffraction-limited standards, while many glass filters use lower-grade \"plate glass\" that can soften fine details. The Baader ASTF filter consistently delivers sharper, higher-contrast images of the Sun's surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Baader filter show granulation on my 100mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, under conditions of good atmospheric seeing, a 100mm \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e equipped with a Baader AstroSolar filter is more than capable of resolving the Sun's granulation pattern. The filter's high optical quality will not be the limiting factor; the sharpness will be determined by the stability of the air and the quality of your telescope's optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003eOD 5.0 (99.999% light reduction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Apertures\u003c\/td\u003e\n\u003ctd\u003e80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 240mm, 280mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilm Material\u003c\/td\u003e\n\u003ctd\u003eBaader AstroSolar Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eTemperature-compensated, stress-free cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30°C to +50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Pins\u003c\/td\u003e\n\u003ctd\u003e3x 10mm diameter, 3x 20mm diameter (38mm length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.12 (80mm)\u003cbr\u003e0.16 (100mm)\u003cbr\u003e0.17 (120mm)\u003cbr\u003e0.20 (140mm)\u003cbr\u003e0.22 (160mm)\u003cbr\u003e0.23 (180mm, 200mm)\u003cbr\u003e0.28 (240mm)\u003cbr\u003e0.33 (280mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Diameter\u003c\/td\u003e\n\u003ctd\u003e170 (80mm)\u003cbr\u003e190 (100mm)\u003cbr\u003e210 (120mm)\u003cbr\u003e230 (140mm)\u003cbr\u003e250 (160mm)\u003cbr\u003e270 (180mm)\u003cbr\u003e290 (200mm)\u003cbr\u003e330 (240mm)\u003cbr\u003e370 (280mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003eVisual solar observation and imaging at high magnification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Clampingrange (10mm bolts)\u003c\/td\u003e\n\u003ctd\u003e110 – 140 (80mm)\u003cbr\u003e130 – 160 (100mm)\u003cbr\u003e150 – 180 (120mm)\u003cbr\u003e170 – 200 (140mm)\u003cbr\u003e190 – 220 (160mm)\u003cbr\u003e210 – 240 (180mm)\u003cbr\u003e230 – 260 (200mm)\u003cbr\u003e270 – 300 (240mm)\u003cbr\u003e310 – 340 (280mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Clampingrange (10mm bolts)\u003c\/td\u003e\n\u003ctd\u003e130 – 160 (80mm)\u003cbr\u003e150 – 180 (100mm)\u003cbr\u003e170 – 200 (120mm)\u003cbr\u003e190 – 220 (140mm)\u003cbr\u003e210 – 240 (160mm)\u003cbr\u003e230 – 260 (180mm)\u003cbr\u003e250 – 280 (200mm)\u003cbr\u003e290 – 320 (240mm)\u003cbr\u003e330 – 360 (280mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Clampingrange (20mm bolts)\u003c\/td\u003e\n\u003ctd\u003e100 – 130 (80mm)\u003cbr\u003e120 – 150 (100mm)\u003cbr\u003e140 – 170 (120mm)\u003cbr\u003e160 – 190 (140mm)\u003cbr\u003e180 – 210 (160mm)\u003cbr\u003e200 – 230 (180mm)\u003cbr\u003e220 – 250 (200mm)\u003cbr\u003e260 – 290 (240mm)\u003cbr\u003e300 – 330 (280mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Clampingrange (20mm bolts)\u003c\/td\u003e\n\u003ctd\u003e140 – 170 (80mm)\u003cbr\u003e160 – 190 (100mm)\u003cbr\u003e180 – 210 (120mm)\u003cbr\u003e200 – 230 (140mm)\u003cbr\u003e220 – 250 (160mm)\u003cbr\u003e240 – 270 (180mm)\u003cbr\u003e260 – 290 (200mm)\u003cbr\u003e300 – 330 (240mm)\u003cbr\u003e340 – 370 (280mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e80 mm, 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, 200 mm, 240 mm, 280 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eASTF Solar Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCentering Pins (10mm dia, 38mm length)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 3\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCentering Pins (20mm dia, 38mm length)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 3\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSafety Straps with Self-Adhesive Pads\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 3\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eRubber Plugs for Unused Holes\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 3\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInstruction Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Safe_Eclipse_Viewing_Camera_Obscura_Guide.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Safe Eclipse Viewing Camera Obscura Guide\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_AstroSolar_Filter_v1.7_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium AstroSolar Filter v1.7 Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"80mm","offer_id":44967379599645,"sku":"BAA-2459310","price":129.0,"currency_code":"CAD","in_stock":true},{"title":"100mm","offer_id":44967379632413,"sku":"BAA-2459311","price":149.0,"currency_code":"CAD","in_stock":true},{"title":"120mm","offer_id":44967379665181,"sku":"BAA-2459312","price":172.0,"currency_code":"CAD","in_stock":true},{"title":"140mm","offer_id":44967379697949,"sku":"BAA-2459313","price":190.0,"currency_code":"CAD","in_stock":true},{"title":"160mm","offer_id":44967379730717,"sku":"BAA-2459314","price":209.0,"currency_code":"CAD","in_stock":true},{"title":"180mm","offer_id":44967379763485,"sku":"BAA-2459315","price":233.0,"currency_code":"CAD","in_stock":true},{"title":"200mm","offer_id":44967379796253,"sku":"BAA-2459316","price":257.0,"currency_code":"CAD","in_stock":true},{"title":"240mm","offer_id":44967379829021,"sku":"BAA-2459317","price":293.0,"currency_code":"CAD","in_stock":true},{"title":"280mm","offer_id":44967379861789,"sku":"BAA-2459318","price":314.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-AstroSolar-Telescope-Filter-OD-5-0-80-280mm-2__19144.1597111106.1280.1280.jpg?v=1684341469"},{"product_id":"baader-k-line-double-stacked-filter-1-25","title":"Baader Calcium GEN-II Filter - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCalcium GEN-II Solar Filter\u003c\/li\u003e\n\u003cli\u003e1.25\" Barrel Size\u003c\/li\u003e\n\u003cli\u003eReveals Chromospheric Detail\u003c\/li\u003e\n\u003cli\u003eCamera-Use Only (Not for Visual)\u003c\/li\u003e\n\u003cli\u003eRequires Full-Aperture Pre-Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader Calcium GEN-II Filter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader Calcium GEN-II Filter replaces the legacy double-stacked K-Line model, delivering a narrower bandpass for high-contrast solar imaging in a single 1.25\" housing. Designed for camera-only use in any standard 1.25\" \u003ca href=\"\/en-int\/collections\/filter-wheels\"\u003efilter wheel\u003c\/a\u003e or nosepiece, this filter targets the near-UV emission line of calcium to reveal dynamic chromospheric structures invisible in white light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRevealing the Sun's Chromosphere in the Near-UV\u003c\/h3\u003e\n\u003cp\u003eThis filter isolates the light from ionized calcium, providing a view of the turbulent border region between the sun's visible surface (photosphere) and its upper atmosphere (chromosphere). This allows your monochrome camera to capture details like the chromospheric network across the entire solar disk, the granular patterns of supergranulation, and the brief, intense brightenings known as Ellerman Bombs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis filter is for photographic use only.\u003c\/strong\u003e The near-UV wavelengths it transmits are invisible to the human eye, which cannot trigger a blink reflex to protect itself. Attempting to view the sun visually with this filter, even with a pre-filter, can result in permanent eye damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe GEN-II Redesign: A Narrower Bandpass in a Single Filter\u003c\/h3\u003e\n\u003cp\u003eThis GEN-II filter makes the previous double-stacked K-Line model obsolete. Thanks to modern manufacturing techniques, a single filter now achieves a narrower half-band width (FWHM), significantly enhancing contrast compared to the older design. This improved contrast is specifically matched to the quantum efficiency and signal-to-noise ratio of modern CMOS cameras.\u003c\/p\u003e\n\u003cp\u003eThe redesign also results in a more practical physical form. Housed in a single, low-profile mount, the filter easily fits into standard filter wheels and drawers without the clearance issues or added complexity of stacking two separate filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCamera Integration and Critical Solar Safety Protocols\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWarning:\u003c\/strong\u003e The Calcium GEN-II filter must be used with a separate, full-aperture \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e, such as Baader's AstroSolar Photo Film, mounted on the front of the telescope. Never point a telescope at the sun with only this filter in the optical path. It does not provide sufficient energy rejection on its own and is designed to be used as part of a complete, safe solar imaging system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Telescope Choice:\u003c\/strong\u003e For the sharpest results, this filter is best paired with mirror-based telescopes like \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrains\u003c\/a\u003e, \u003ca href=\"\/en-int\/collections\/maksutov-cassegrain-telescopes\"\u003eMaksutovs\u003c\/a\u003e, or \u003ca href=\"\/en-int\/collections\/newtonian-telescopes\"\u003eNewtonians\u003c\/a\u003e. \u003ca href=\"\/en-int\/collections\/refractors\"\u003eRefractor\u003c\/a\u003e telescopes, particularly those with fast focal ratios, are often not color-corrected for the near-UV spectrum and may produce softer images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Cameras:\u003c\/strong\u003e A monochrome camera is strongly recommended, as these sensors have much higher sensitivity in the near-UV than color cameras or unmodified DSLRs. Using a color camera may require impractically long exposure times and yield lower-contrast results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features can I see with the Baader Calcium GEN-II filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader Calcium GEN-II filter is designed for imaging the sun's chromosphere. It excels at revealing the \u003cstrong\u003echromospheric network\u003c\/strong\u003e (bright outlines of supergranule cells), faculae near the solar limb, and transient events like \u003cstrong\u003eEllerman Bombs\u003c\/strong\u003e. It shows a different, more active layer of the sun than a standard white-light filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy can't I use the Baader Calcium GEN-II filter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must \u003cstrong\u003enever use this filter for visual observation\u003c\/strong\u003e. It transmits light in the near-ultraviolet part of the spectrum, which is invisible to the human eye. Your eye will not register the light as bright and will not trigger a protective blink reflex, but the energy can still cause severe and permanent damage to your retina.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any other filters to use the Baader Calcium GEN-II filter safely?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes, absolutely.\u003c\/strong\u003e This filter is not a standalone solar filter. You must use it in combination with a full-aperture, objective-mounted solar filter like \u003cstrong\u003eBaader AstroSolar Film\u003c\/strong\u003e. The front-mounted filter reduces the sun's energy to a safe level before it enters the telescope. The Calcium GEN-II filter then isolates the specific wavelength for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader Calcium GEN-II filter work well with my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, an 8\" f\/10 Schmidt-Cassegrain is an excellent instrument for the Baader Calcium GEN-II filter. As a mirror-based telescope, it does not suffer from the potential chromatic aberration in the near-UV that can affect some refractors. The long focal length will also provide a good image scale for capturing chromospheric details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a color CMOS camera. Can I still use the Baader Calcium GEN-II filter to image sunspots?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can image sunspots, which are primarily a white-light (photosphere) phenomenon, this filter is designed for chromospheric features. A color camera can be used, but it's not ideal. The Bayer matrix on a color sensor blocks a significant portion of the near-UV light this filter transmits, and the sensor itself has lower sensitivity at this wavelength. You will get much better results with a \u003cstrong\u003emonochrome camera\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the new Baader Calcium GEN-II filter different from the older 'double stacked' K-Line filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader Calcium GEN-II filter is a complete replacement for the older system. Key differences include:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Filter Design:\u003c\/strong\u003e It achieves a narrower bandpass and better contrast in one filter, making stacking unnecessary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher Contrast:\u003c\/strong\u003e Modern coating technology allows for a tighter bandpass, which improves the visibility of fine chromospheric details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Profile Housing:\u003c\/strong\u003e It fits easily into any standard 1.25\" filter wheel or drawer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter size\u003c\/td\u003e\n\u003ctd\u003e1.25 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle or Set?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter mounted\u003c\/td\u003e\n\u003ctd\u003eMounted (LPFC 6mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Usage\u003c\/td\u003e\n\u003ctd\u003eSolar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Filter\u003c\/td\u003e\n\u003ctd\u003eNarrowband\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eonly for photographic use behind another solar filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHBW (Halfbandwidth)\u003c\/td\u003e\n\u003ctd\u003e5nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd\u003e394 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eCaK-II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e50 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCalcium GEN-II filter 1.25in, mounted\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAstroSolar Photo Film OD 3.8 sheet, 200 x 290 mm\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967380451613,"sku":"BAA-2961590","price":415.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BAA-2961590.jpg?v=1732743371"},{"product_id":"baader-solarspectrum-0-7x-telecompressor-2","title":"Baader SolarSpectrum 0.7x Telecompressor - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e0.7x Focal Reduction Factor\u003c\/li\u003e\n\u003cli\u003eDesigned for SolarSpectrum H-alpha Filters\u003c\/li\u003e\n\u003cli\u003eCorrects for f\/30 Telecentric Systems\u003c\/li\u003e\n\u003cli\u003e2\" Barrel and Threading\u003c\/li\u003e\n\u003cli\u003eEnables Full-Disk Solar Views\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader SolarSpectrum 0.7x Telecompressor - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader SolarSpectrum 0.7x Telecompressor is an essential 2\" accessory for any SolarSpectrum H-alpha filter owner, specifically designed to solve the challenge of the required f\/30 light cone. This reducer shortens your telescope's effective focal length by a factor of 0.7x, ensuring the full solar disk and its surrounding prominences fit within the field of view of \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepieces\u003c\/a\u003e in the 30mm to 35mm range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe f\/30 Requirement: Why SolarSpectrum Filters Need This Compressor\u003c\/h3\u003e\n\u003cp\u003eSolarSpectrum H-alpha filters mandate a parallel light path of at least f\/30 to achieve their narrow bandpass. This is typically accomplished using a telecentric system, which dramatically increases the telescope's effective focal length. The consequence is a highly magnified image where the full solar disk no longer fits in the field of view, even with long-focal-length eyepieces of 30mm to 35mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 0.7x Reduction: Framing the Full Solar Disk and Prominences\u003c\/h3\u003e\n\u003cp\u003eThis telecompressor mounts on the eyepiece side of the filter, reducing the elongated focal length by a factor of 0.7x to bring the entire sun back into view. For example, a 6\" \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e operating at an effective focal length of 2250mm (at f\/30) is reduced to approximately 1700mm, restoring a full-disk perspective. For imagers, this reduction also provides the dual benefit of a wider field for framing and shorter necessary exposure times, helping to freeze atmospheric turbulence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMechanical Mounting: Integrating with the 2\" Universal Flange\u003c\/h3\u003e\n\u003cp\u003eIntegration into your optical train is straightforward. The telecompressor is designed to thread into the Baader 2\" Universal Flange (#2958240, included with SolarSpectrum H-alpha filters), which attaches directly to the SolarSpectrum filter housing with four screws. The compressor features a standard 2\" male thread and is fully compatible with Baader's T-2 accessory system, allowing for secure, threaded connections to cameras, T-2 prisms, or \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003eeyepiece holders\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChoosing Your Reduction: 0.7x vs. the 0.4x Telecompressor\u003c\/h3\u003e\n\u003cp\u003eBaader offers two options to suit different equipment and goals. The 0.7x Telecompressor provides a moderate reduction that is ideal for most telescope systems to perfectly frame the sun and its prominences. For those with shorter focal length instruments or imagers seeking the widest possible field of view, the more aggressive 0.4x Telecompressor (#2459260) is also available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a telecompressor needed for my Baader SolarSpectrum filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSolarSpectrum H-alpha filters require a very slow, parallel f\/30 light cone for optimal performance. This is achieved with a telecentric system, which significantly increases your telescope's effective focal length. The 0.7x Telecompressor reduces this focal length back down, allowing the entire solar disk to fit within a typical eyepiece field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 0.7x Telecompressor physically attach to the filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt attaches to the eyepiece-side of the SolarSpectrum filter housing. You will need the \u003cstrong\u003eBaader 2\" Universal Flange\u003c\/strong\u003e (included with SolarSpectrum H-alpha filters, #2958240), which secures to the filter with four screws. The telecompressor's 2\" male thread then screws directly into the flange.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader 0.7x Telecompressor for solar imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is highly recommended for imaging. By reducing the effective focal length by a factor of 0.7x, it not only provides a wider field of view to capture the full sun but also significantly reduces the required exposure times, which helps freeze atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen should I choose the Baader 0.7x Telecompressor versus the 0.4x model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e0.7x Telecompressor\u003c\/strong\u003e provides a moderate reduction that is ideal for most telescopes to frame the full sun and prominences. The \u003cstrong\u003e0.4x Telecompressor\u003c\/strong\u003e offers a more aggressive reduction for an even wider field of view, which may be preferable for shorter focal length telescopes or for imagers who need to fit the sun into a smaller sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy refractor has a 2250mm focal length after adding the telecentric. Will the 0.7x Telecompressor let me see the full solar disk?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the exact scenario it's designed for. The 0.7x telecompressor will reduce that 2250mm effective focal length to approximately 1700mm, which is short enough to frame the entire sun and its prominences when using a wide-field eyepiece around 30-35mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I connect my T-2 accessories to the Baader 0.7x Telecompressor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While the telecompressor has a native 2\" male thread, it is fully compatible with the Baader T-2 accessory system. You can use various T-2 adapters to change the output to a male or female T-2 thread for securely connecting cameras, prisms, or other components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_D-ERF_Filter_Safe_Use_Notes.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium D-ERF Filter Safe Use Notes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_SolarSpectrum_Heated_H-alpha_Filters_Product_Information.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium SolarSpectrum Heated H-alpha Filters Product Information\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967380713757,"sku":"BAA-2459259","price":456.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-SolarSpectrum-0-7x-Telecompressor-2-inch-1__72390.1597111111.1280.1280.jpg?v=1684341706"},{"product_id":"baader-solarspectrum-research-grade-0-4x-telecompressor-2","title":"Baader SolarSpectrum Research Grade 0.4x Telecompressor - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eReduces effective focal ratio by a factor of 0.4x\u003c\/li\u003e\n\u003cli\u003eDesigned for Baader Solar Spectrum filters requiring an f\/30 light path\u003c\/li\u003e\n\u003cli\u003eEnables viewing of the full solar disk in a single field\u003c\/li\u003e\n\u003cli\u003eStandard 2-inch barrel and 2-inch male filter threads\u003c\/li\u003e\n\u003cli\u003eAdaptable to the T-2 accessory system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader SolarSpectrum Research Grade 0.4x Telecompressor - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader SolarSpectrum Research Grade 0.4x Telecompressor is an essential optical component designed to solve the primary challenge of high-magnification solar observation: fitting the entire sun in your \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e. Specifically engineered for Solar Spectrum H-alpha filters, which require a slow f\/30 light path, this 2-inch telecompressor reduces your telescope's effective focal length by a factor of 0.4x. This aggressive reduction transforms a narrow, high-power view into a complete portrait of the sun, making the full disk and surrounding prominences visible in eyepieces with focal lengths from 30mm to 35mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCapture the Full Solar Disk: A 0.4x Focal Reduction for f\/30 Systems\u003c\/h3\u003e\n\u003cp\u003eBaader's Solar Spectrum H-alpha filters achieve their ultra-narrow bandpass by operating within a parallel light beam, typically created by a telecentric system that extends a telescope's focal ratio to f\/30. While optically necessary, this long effective focal length often results in a field of view too small to contain the entire solar disk. The 0.4x Telecompressor directly corrects this by converting the f\/30 beam to an effective f\/12, dramatically widening your field of view and ensuring you can frame the sun in its entirety.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e2-Inch Format for H-alpha Imaging: Wider Fields and Shorter Exposures\u003c\/h3\u003e\n\u003cp\u003eFor solar imagers, the benefits of the 0.4x telecompressor are twofold. By widening the field, it allows webcams and \u003ca href=\"\/en-int\/collections\/planetary-cameras\"\u003eplanetary cameras\u003c\/a\u003e with smaller sensors to capture the full solar disk in a single frame, eliminating the need for complex mosaics. Furthermore, the f-ratio reduction significantly increases image brightness, which in turn reduces the required exposure times—a critical factor for freezing atmospheric turbulence and achieving sharper images of solar granulation and filamentary detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSeamless Integration with 2-Inch and T-2 Threads\u003c\/h3\u003e\n\u003cp\u003eThis telecompressor is designed for direct, secure attachment to the rear of a Solar Spectrum filter housing. It threads into the Baader 2″ Universal Flange (included with SolarSpectrum H-alpha filters, #2958240), which attaches to the filter body with four screws. The telecompressor features a standard 2-inch male thread, and its optical path can be adapted using Baader's extensive T-2 accessory system, allowing for rigid, threaded connections to \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonals\u003c\/a\u003e, extension tubes, and cameras for a flexure-free imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChoosing Your Reduction: Baader 0.4x vs. the 0.7x Telecompressor\u003c\/h3\u003e\n\u003cp\u003eBaader offers two telecompressors for the Solar Spectrum line, and the choice depends on your specific goals. The 0.7x version provides a more moderate focal reduction, making it ideal for observers who want a wider field but also wish to maintain a larger image scale for detailed views of active regions, flares, and prominences.\u003c\/p\u003e\n\u003cp\u003eThe 0.4x telecompressor, in contrast, offers the maximum possible field of view. It is the definitive choice for imagers wanting to capture full-disk portraits, for visual observers using long focal length telescopes, or for anyone operating under seeing conditions that don't support very high magnification. If your primary goal is to see the entire solar disk at once, the 0.4x is the correct tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Baader 0.4x Telecompressor for Solar Spectrum filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main purpose is to reduce the long f\/30 effective focal length required by Solar Spectrum H-alpha filters. This \u003cstrong\u003e0.4x reduction\u003c\/strong\u003e widens the field of view, allowing you to see the entire solar disk in a single view, which is often impossible at the native f\/30 focal ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the Baader 0.4x Telecompressor to my Solar Spectrum filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe telecompressor is not attached directly to the filter. You must first install the \u003cstrong\u003eBaader 2″ Universal Flange (#2958240)\u003c\/strong\u003e onto the rear of the filter housing using four screws. The telecompressor then threads directly into the 2-inch female thread of the universal flange.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen should I choose the 0.4x Telecompressor over the 0.7x version for my Solar Spectrum filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose the \u003cstrong\u003e0.4x Telecompressor\u003c\/strong\u003e when your primary goal is achieving the widest possible field of view, especially for full-disk solar imaging or when using a very long focal length telescope. Choose the \u003cstrong\u003e0.7x version\u003c\/strong\u003e if you want a wider field than native f\/30 but prefer to maintain a larger image scale for detailed views of specific solar features like sunspots or prominences.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm using a 6-inch f\/15 refractor with a Solar Spectrum filter, making it f\/30. Will the 0.4x Telecompressor let me see the full sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. An f\/30 system is exactly what this telecompressor is designed for. Applying the 0.4x reduction factor will change your effective focal ratio to f\/12. This significant reduction will provide a field of view wide enough to easily frame the entire solar disk with most Plössl or wide-field eyepieces in the 30-35mm range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 0.4x Telecompressor improve imaging the full solar disk with a webcam?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt improves imaging in two key ways. First, it shrinks the image scale so the entire sun fits onto the smaller sensor of a typical planetary camera or webcam. Second, by reducing the focal ratio from f\/30 to f\/12, it makes the image much brighter, allowing for \u003cstrong\u003eshorter exposure times\u003c\/strong\u003e which are critical for \"lucky imaging\" and freezing atmospheric turbulence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I connect T-2 accessories to the Baader 0.4x Telecompressor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. While the telecompressor itself has 2-inch threads, it is designed to be fully compatible with the Baader Astro \u003cstrong\u003eT-2 system\u003c\/strong\u003e. You can use various T-2 adapters to create a solid, threaded connection to your camera, flip mirror, or other accessories for a rigid imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Reduction\u003c\/td\u003e\n\u003ctd\u003e0.4x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThreads\u003c\/td\u003e\n\u003ctd\u003e2\" Male (SD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended Application\u003c\/td\u003e\n\u003ctd\u003eBaader Solar Spectrum H-alpha filters at f\/30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaader Part Number\u003c\/td\u003e\n\u003ctd\u003e2459260\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.08\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Filter with mount\/thread?\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_D-ERF_Filter_Safe_Use_Notes.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium D-ERF Filter Safe Use Notes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_SolarSpectrum_Heated_H-alpha_Filters_Product_Information.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium SolarSpectrum Heated H-alpha Filters Product Information\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967380779293,"sku":"BAA-2459260","price":533.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-SolarSpectrum-Research-Grade-0-4x-Telecompressor-2-inch-1__79716.1597111112.1280.1280.jpg?v=1684341713"},{"product_id":"baader-d-erf-energy-rejection-filter-75-180mm","title":"Baader D-ERF Energy Rejection Filter - 75-180mm","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFull-aperture solar energy rejection filter\u003c\/li\u003e\n\u003cli\u003eRequired for use with rear-mounted H-alpha etalon systems\u003c\/li\u003e\n\u003cli\u003eAdvanced, hard dielectric IR-cut coatings\u003c\/li\u003e\n\u003cli\u003eProtects sensitive etalon components from thermal damage\u003c\/li\u003e\n\u003cli\u003eAvailable in sizes from 75mm to 180mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader D-ERF Energy Rejection Filter - 75mm to 180mm\u003c\/h2\u003e\n\u003cp\u003eThe Baader D-ERF Energy Rejection Filter is the essential first component for any H-alpha solar imaging system using a rear-mounted etalon, available in sizes from 75mm to 180mm. This front-mounted filter blocks the vast majority of the sun's unwanted energy, particularly infrared, before it can enter your telescope. By preventing this intense heat from reaching your expensive and delicate H-alpha etalon, the D-ERF ensures stable performance and protects your investment from permanent damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCritical Pre-Filtering for H-alpha Systems up to 180mm\u003c\/h3\u003e\n\u003cp\u003eUnlike an integrated solar telescope, a system built around a rear-mounted etalon (like those from Solar Spectrum) relies on a full-aperture pre-filter. The Baader D-ERF is that filter, designed to handle the full solar intensity collected by \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e with apertures as large as 180mm. Its primary function is safety and thermal stability, rejecting harmful energy to prevent the etalon's precision bandpass from shifting or \"de-tuning\" due to heat expansion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDielectric IR-Cut Coatings for Refractors from 75mm to 180mm\u003c\/h3\u003e\n\u003cp\u003eThe effectiveness of the Baader D-ERF comes from its sophisticated, hard dielectric IR-Cut coating. This multi-layer coating is vastly superior to simpler absorptive filters, as it reflects unwanted energy instead of absorbing it, keeping the filter itself cool. This reflective design ensures that the thermal load on your entire optical system is minimized, which is critical for maintaining sharp, high-contrast views of solar prominences and chromosphere details with any of the available sizes, from 75mm to 180mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Baader D-ERF Energy Rejection Filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader D-ERF is a required safety pre-filter for solar observation with rear-mounted H-alpha filter systems (like Solar Spectrum). It mounts on the front of your telescope and blocks most of the sun's energy, especially heat-intensive infrared (IR) light, before it enters the optical tube. This protects the delicate, expensive etalon from heat damage and thermal instability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a Baader D-ERF for my dedicated Lunt or Coronado solar telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Dedicated solar telescopes like those from Lunt or Coronado have their energy rejection filters built directly into the optical system. The Baader D-ERF is specifically for component-based H-alpha systems where you add a rear-mounted etalon to a standard nighttime refractor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I choose the right size Baader D-ERF for my 130mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must choose a D-ERF with a clear aperture equal to or larger than your telescope's objective lens. For a 130mm refractor, the \u003cstrong\u003e135mm Baader D-ERF\u003c\/strong\u003e would be the correct choice. You will also need a separate, appropriate filter cell to mount it securely to the front of your specific telescope model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader D-ERF by itself for white-light solar viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not.\u003c\/strong\u003e The D-ERF is a pre-filter only and is not safe for visual or photographic use on its own. It passes only a narrow red band (610 to 690 nm) that includes the desired H-alpha wavelength, and that light is still dangerously intense. You must use it in conjunction with a proper, rear-mounted H-alpha etalon and blocking filter system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat happens if I use my Solar Spectrum filter on a 150mm refractor without a D-ERF?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFocusing the unfiltered light from a 150mm objective onto a rear-mounted etalon would generate extreme temperatures, enough to cause immediate and catastrophic damage. The intense heat would permanently destroy the delicate coatings and internal components of the etalon and could potentially damage the telescope or cause a fire. An ERF is not optional; it is a mandatory safety component.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader D-ERF's IR-Cut coating work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader D-ERF uses a hard, multi-layer dielectric coating that acts like a mirror to infrared light while passing only a narrow red band (610 to 690 nm, which includes the 656nm H-alpha line). By reflecting the heat energy instead of absorbing it, the filter itself stays cool and does not radiate heat into the telescope tube, ensuring maximum thermal stability for the entire system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eSolar Energy Rejection Pre-Filter (ERF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eDielectric IR-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Apertures\u003c\/td\u003e\n\u003ctd\u003e75mm, 90mm, 110mm, 135mm, 160mm, 180mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eRequired for rear-mounted H-alpha solar filter systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRequires separate, telescope-specific cell (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.07 (75mm) 0.09 (90mm) 0.32 (110mm) 0.78 (135mm) 0.54 (160mm) 0.69 (180mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter shape\u003c\/td\u003e\n\u003ctd\u003eround\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle or Set?\u003c\/td\u003e\n\u003ctd\u003eSingle Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter mounted\u003c\/td\u003e\n\u003ctd\u003eUnmounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Usage\u003c\/td\u003e\n\u003ctd\u003eIR-Cut, Solar, Specialty, UV-Cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecial Features\u003c\/td\u003e\n\u003ctd\u003eSpecial Size: Ø 75 mm ± 0.05 mm (75mm)\u003cbr\u003eSpecial Size: Ø 89.9 mm ± 0.05 mm (90mm)\u003cbr\u003eSpecial Size: Ø 109.9 mm ± 0.05 mm (110mm)\u003cbr\u003eSpecial Size: Ø 134.9 mm ± 0.05 mm (135mm)\u003cbr\u003eSpecial Size: Ø 159.6 mm ± 0.05 (160mm)\u003cbr\u003eSpecial Size: Ø 179.9 mm ± 0.05 (180mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Thickness (without cell)\u003c\/td\u003e\n\u003ctd\u003e5.0 mm (75mm)\u003cbr\u003e6.0 mm (90mm)\u003cbr\u003e8.1 mm (110mm)\u003cbr\u003e9.1 mm (135mm)\u003cbr\u003e9.9 mm (160mm)\u003cbr\u003e12.5 mm (180mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHBW (Halfbandwidth)\u003c\/td\u003e\n\u003ctd\u003e80nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCWL (Central Wavelength)\u003c\/td\u003e\n\u003ctd\u003e650 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003e610 – 690 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003edielectrically coated, planeoptically polished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e800 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader D-ERF Energy Rejection Filter (Selected Size)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_D-ERF_Filter_Safe_Use_Notes.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium D-ERF Filter Safe Use Notes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"75mm","offer_id":44967380844829,"sku":"BAA-2459241D","price":459.0,"currency_code":"CAD","in_stock":true},{"title":"90mm","offer_id":44967380877597,"sku":"BAA-2459242D","price":663.0,"currency_code":"CAD","in_stock":true},{"title":"110mm","offer_id":44967380910365,"sku":"BAA-2459243D","price":816.0,"currency_code":"CAD","in_stock":true},{"title":"135mm","offer_id":44967380943133,"sku":"BAA-2459244D","price":1311.0,"currency_code":"CAD","in_stock":true},{"title":"160mm","offer_id":44967380975901,"sku":"BAA-2459245D","price":1631.0,"currency_code":"CAD","in_stock":true},{"title":"180mm","offer_id":44967381008669,"sku":"BAA-2459246D","price":2416.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-D-ERF-Energy-Rejection-Filter-75-180mm-1__30096.1597111115.1280.1280.jpg?v=1684341475"},{"product_id":"baader-cool-ceramic-safety-herschel-prism-visual-photographic","title":"Baader Cool-Ceramic Safety Herschel Prism (Visual\/Photographic)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2\" Herschel wedge prism for white-light solar observation with refractors\u003c\/li\u003e\n\u003cli\u003eOne-sided Phantom Coating Group anti-reflective coating\u003c\/li\u003e\n\u003cli\u003eCeramic solar finder\u003c\/li\u003e\n\u003cli\u003e2-inch ClickLock eyepiece holder\u003c\/li\u003e\n\u003cli\u003eIncludes 7.5 nm Solar Continuum and Neutral Density filters\u003c\/li\u003e\n\u003cli\u003eAvailable in a 1.60 kg Visual or 1.74 kg Photographic package\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eBaader Cool-Ceramic Safety Herschel Prism (Visual\/Photographic)\u003c\/h2\u003e\n\u003cp\u003eThe Baader Cool-Ceramic Safety Herschel Prism 2\" Mark II is a 2\" wedge prism according to Herschel for white-light solar observation and solar photography, with a one-sided Phantom Coating Group anti-reflective coating, a ceramic \u003ca href=\"\/en-int\/collections\/solar-accessories\"\u003esolar finder\u003c\/a\u003e and a 2\" ClickLock \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003eeyepiece holder\u003c\/a\u003e. It includes Baader's Solar Continuum 7.5 nm 2\" filter (540nm), added for an uncompromisingly sharp solar image, and Neutral Density filters; the Visual version (1.60 kg) has one ND filter and the Photographic version (1.74 kg) four.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 2\" Herschel Wedge Prism\u003c\/h3\u003e\n\u003cp\u003eThe prism is a 2\" wedge prism according to Herschel. It works by first-surface reflection, in white (integral) light, and gives an erect, mirror-inverted image, like a \u003ca href=\"\/en-int\/collections\/diagonals\"\u003estar diagonal\u003c\/a\u003e. The prism carries Baader's Phantom Coating Group anti-reflective coating on one side.\u003c\/p\u003e\n\u003cp\u003eA Herschel prism is designed for use with \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e. Use the prism only as described in the instructions Baader supplies with it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIncluded Filters\u003c\/h3\u003e\n\u003cp\u003eBoth versions include the Solar Continuum 7.5 nm 2\" filter (540nm, #2961581) and the Neutral Density filter 2\", ND 3.0 (T=0.1%, #2458332). The Photographic version adds three more Neutral Density filters:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eND 1.8\u003c\/strong\u003e (T=1.5%, #2458331)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eND 0.9\u003c\/strong\u003e (T=12.5%, #2458322)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eND 0.6\u003c\/strong\u003e (T=25%, #2458321)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe optical length with two filters of 2 mm glass thickness (ND 3 and Solar Continuum) is 112.4 mm, against 115 mm without filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBrightness Adjustment with Polarising Filters\u003c\/h3\u003e\n\u003cp\u003eBaader builds in a rotation mechanism for polarising filters, which it calls the best method for brightness adjustment in visual solar observation and solar photography in white light. Stepless brightness adjustment is possible in combination with the optional Polarizing Single Filter 2\" (#2408342) and the included Neutral Density filter. The \u003ca href=\"\/en-int\/collections\/neutral-density-and-polarizing-filters\"\u003epolarizing filters\u003c\/a\u003e are not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCeramic Solar Finder, S58 Dovetail and 3-Point Adjustment\u003c\/h3\u003e\n\u003cp\u003eBaader fits the prism with a ceramic solar finder for pointing the telescope at the Sun. The 2\" nosepiece has an S58 \u003ca href=\"\/en-int\/collections\/dovetail-plates\"\u003edovetail\u003c\/a\u003e and Safety-Kerfs, and the prism has a new 3-point adjustment system preset in the factory.\u003c\/p\u003e\n\u003cp\u003eBaader's Safety-Kerf groove system gives the \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e's clamp excellent grip, just like a classic safety groove, and in addition the prism cannot tilt if the telescope's clamping mechanism is in an unfortunate position; with a simple safety groove the clamping screws may just miss the groove or sit on its edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConnections and the 2\" ClickLock Eyepiece Holder\u003c\/h3\u003e\n\u003cp\u003eThe connections are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope side:\u003c\/strong\u003e 2\" nosepiece and S58 dovetail outside; M48, 2\"\/SCT thread and M55 inside.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepiece side:\u003c\/strong\u003e 2\" bore with the ClickLock holder; 2\"\/SCT thread, M55 and S58 outside.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical length:\u003c\/strong\u003e 115 mm without filter; 112.4 mm with two 2 mm filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBaader's 2\" ClickLock clamp has no clamping screws: a 20° turn of the rotary lever with light pressure holds 2\" accessories securely. Like a quick-action chuck, it holds the inserted item on three sides, and leverage multiplies the torque; a ratchet lets you hear and feel whether it is open or closed, and the massive tension ring holds accessories without scratches. Every \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e is aligned parallel to the axis automatically, even with diameter deviations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVisual and Photographic Versions\u003c\/h3\u003e\n\u003cp\u003eThe prism body is the same in both versions. The \u003cstrong\u003eVisual version\u003c\/strong\u003e (1.60 kg) includes the prism, the Solar Continuum 7.5 nm filter and the ND 3.0 filter. The \u003cstrong\u003ePhotographic version\u003c\/strong\u003e (1.74 kg) includes the Visual set plus the ND 1.8, ND 0.9 and ND 0.6 filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCare of the Filters\u003c\/h3\u003e\n\u003cp\u003eBaader's cleaning guide says filters can be cleaned like eyepieces, especially hard-coated ones such as all Baader filters: apply the cleaning fluid to the cloth, never onto the item itself. Clean optical surfaces as seldom as possible, avoid fingerprints, which contain fats and acids that harm coatings, and remove dust with a clean, fat-free brush before using any fluid. Keep the dust caps on when the prism is not in use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Visual and Photographic versions?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe prism is the same. The Visual version (1.60 kg) includes the Solar Continuum 7.5 nm 2\" filter and the ND 3.0 filter; the Photographic version (1.74 kg) adds the ND 1.8, ND 0.9 and ND 0.6 filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Solar Continuum filter do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBaader includes the Solar Continuum 7.5 nm 2\" filter (540nm) for an uncompromisingly sharp solar image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a polarising filter included?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Baader builds in a rotation mechanism for polarising filters, which it calls the best method for brightness adjustment in visual solar observation and solar photography in white light. Stepless brightness adjustment is possible in combination with the optional Polarizing Single Filter 2\" (#2408342) and the included Neutral Density filter. The polarizing filters are not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich telescopes is it for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA Herschel prism is designed for use with refractors. It fits a 2\" eyepiece holder through its Safety-Kerf nosepiece, and also has an S58 dovetail and M48, 2\"\/SCT and M55 inner connections on the telescope side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical length?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe optical length is \u003cstrong\u003e115 mm\u003c\/strong\u003e without filter and \u003cstrong\u003e112.4 mm\u003c\/strong\u003e with two filters of 2 mm glass thickness (ND 3 and Solar Continuum).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I point the telescope at the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBaader fits the prism with a ceramic solar finder for this purpose. Follow the instructions Baader supplies with the prism.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat image orientation does it give?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe image is erect and mirror-inverted.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the 3-point adjustment system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt has a new 3-point adjustment system preset in the factory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 2\" ClickLock holder work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 20° turn of the rotary lever with light pressure clamps 2\" accessories, holding them on three sides like a quick-action chuck and aligning them parallel to the optical axis, without clamping screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow should I clean the filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFilters can be cleaned like eyepieces, especially hard-coated ones such as all Baader filters: apply the cleaning fluid to the cloth, never onto the filter, and clean as seldom as possible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003ePhotographic, Visual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e1.74 (Photographic) 1.60 (Visual)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003ePhantom Coating® Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eClickLock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e115 mm without filter | With two filters of 2 mm glass thickness (ND 3, SCT): 112.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003e2\"\/SCT Thread (50.8mm), M55, S58\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48, 2\"\/SCT Thread (50.8mm), M55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 2\" (50.8mm), S58\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eHerschel Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect image, Mirror inverted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eFirst surface reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Wavelength\u003c\/td\u003e\n\u003ctd\u003eWhitelight (integral light)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCool-Ceramic Safety Herschel Prism 2\" Mark II\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSolar Continuum 7.5 nm 2\" Filter (540nm)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNeutral Density Filter 2\", ND 3.0 (T=0.1%)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNeutral Density Filter 2\", ND 1.8 (T=1.5%), photographic version only\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNeutral Density Filter 2\", ND 0.9 (T=12.5%), photographic version only\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNeutral Density Filter 2\", ND 0.6 (T=25%), photographic version only\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Cleaning_and_Maintenance_of_Optics_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eBaader Planetarium Cleaning and Maintenance of Optics Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Photographic","offer_id":44967382057245,"sku":"BAA-2956510P","price":940.0,"currency_code":"CAD","in_stock":true},{"title":"Visual","offer_id":44967382090013,"sku":"BAA-2956510V","price":838.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Cool-Ceramic-Safety-Herschel-Prism-Visual-Photographic-1__49933.1597111118.1280.1280.jpg?v=1684341716"},{"product_id":"daystar-quark-chromosphere-solar-filter","title":"Daystar Quark Chromosphere Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAll-in-one Hydrogen-Alpha solar filter\u003c\/li\u003e\n\u003cli\u003eChromosphere model optimized for solar surface detail\u003c\/li\u003e\n\u003cli\u003eIntegrated 4.3x telecentric barlow\u003c\/li\u003e\n\u003cli\u003eFits standard 1.25\" and 2\" focusers\u003c\/li\u003e\n\u003cli\u003eDesigned for F\/4 to F\/9 refractor telescopes\u003c\/li\u003e\n\u003cli\u003eUSB-powered for precise temperature control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark Chromosphere Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDaystar Quark Chromosphere Solar Filter\u003c\/strong\u003e is an all-in-one Hydrogen-Alpha filter, integrating a Fabry-Perot etalon, a 12mm blocking filter, and a 4.3x telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003ebarlow\u003c\/a\u003e into a single eyepiece-sized housing. This all-in-one design brings views of the Sun's chromosphere at 6562.8 Å to any F\/4 to F\/9 \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e without complex adapters or configurations. Powered by a standard 5V, 1.5A USB connection, the Quark heats its internal etalon to show surface detail, filaments and active regions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAn All-in-One Hydrogen-Alpha Filter 'Eyepiece'\u003c\/h3\u003e\n\u003cp\u003eDaystar's Quark design condenses a complete, multi-component Hydrogen-Alpha filter system into a single, compact device that inserts into your \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e just like an eyepiece. This approach eliminates the need to source and assemble separate barlow lenses, etalons, and blocking filters, turning a refractor into a \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescope\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is one lightweight eyepiece-sized device whose compact design eliminates unnecessary components and weight, with reduced power consumption so it can operate all day off a small optional battery pack. For F\/4 to F\/9 refractors, the user needn't worry about configurations: insert it in the diagonal, add an eyepiece and view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eViewing the 6562.8 Å Chromosphere\u003c\/h3\u003e\n\u003cp\u003eThis Quark is tuned to the Hydrogen-Alpha wavelength at 6562.8 Å, allowing you to see the Sun's dynamic chromosphere, a layer of plasma just above the visible photosphere. Unlike a white-light filter, an H-alpha filter reveals a constantly changing landscape of magnetic activity.\u003c\/p\u003e\n\u003cp\u003eThe Chromosphere model is specifically qualified to maximize contrast on surface features. With it, you can observe:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilaments:\u003c\/strong\u003e Dark, snake-like structures that are actually prominences seen against the bright solar disk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlage:\u003c\/strong\u003e Bright, active regions that often surround sunspot groups, indicating concentrated magnetic fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive Regions:\u003c\/strong\u003e Complex areas of magnetic activity around sunspot groups, where solar flares occur.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminences:\u003c\/strong\u003e While optimized for surface detail, the Chromosphere model still shows prominences at the Sun's limb; both versions show prominences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Integrated 4.3x Telecentric Barlow System\u003c\/h3\u003e\n\u003cp\u003eThe performance of a Fabry-Perot etalon is critically dependent on the angle of light passing through it; the filters need slow light, with best performance at F\/27-F\/32. The Quark achieves this by incorporating a custom-designed, 2-element 4.3x telecentric barlow lens directly into the optical train. This highly specialized telecentric lens offers superior field flatness; on F\/4 to F\/9 refractors it gives an F\/17 to F\/38 final image.\u003c\/p\u003e\n\u003cp\u003eThis telecentric system is fully optimized for the 656nm H-alpha wavelength, with specialized coatings and internal baffles to maximize transmission and increase contrast by minimizing internal reflections. This works because the Quark is matched to F\/4 to F\/9 refractors; F\/9 and higher gives a dimmer visual view, and below F\/4 a brighter view but a wider effective bandpass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuark Chromosphere vs. Prominence Models\u003c\/h3\u003e\n\u003cp\u003eDaystar offers the Quark in two variations, allowing observers to select a filter based on their primary observing goals. While both models show prominences, they are tuned differently to emphasize specific solar features. The Chromosphere model generally operates at a bandpass of 0.5Å or below.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model (This Product):\u003c\/strong\u003e Provides higher contrast on the bright solar disk itself. Filaments are only visible in the Chromosphere version, so it is the choice for monitoring active regions and filaments on the Sun's face.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model:\u003c\/strong\u003e With a wider bandpass (generally 0.6Å or above), this model gives a brighter image for users mostly interested in prominences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost users choose the Chromosphere version for its versatility, while users mostly interested in prominences or wanting a brighter image should choose the Prominence model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eF\/4-F\/9 Refractors and 450mm Full-Disk Views\u003c\/h3\u003e\n\u003cp\u003eThe Daystar Quark Chromosphere is designed for use with refractor telescopes with native focal ratios from F\/4 to F\/9, with best performance in the F\/4 to F\/8 range. It is not suitable for use with off-axis systems like \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrains\u003c\/a\u003e or \u003ca href=\"\/en-int\/collections\/dobsonians\"\u003eDobsonians\u003c\/a\u003e. The integrated 4.3x barlow multiplies your telescope's focal length, giving an F\/17 to F\/38 final image on F\/4 to F\/9 refractors.\u003c\/p\u003e\n\u003cp\u003eBecause of this magnification, the ability to see the entire solar disk in a single field of view depends on your telescope's focal length. The Quark can deliver a full-disk view in telescopes with a focal length of about 450mm or less. In longer focal length instruments, you will get higher-magnification views of specific regions on the Sun, for studying the intricate details of a sunspot group or active region.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEnergy Rejection for Apertures Over 80mm\u003c\/h3\u003e\n\u003cp\u003eConcentrated sunlight can create very high temperatures where it falls, so care must be taken to prevent melted components or fire. To prevent damage, use an Energy Rejection Filter (ERF) on telescopes of 80mm aperture or more, or when tracking the Sun for long periods; all dedicated solar tracking applications should employ energy rejection.\u003c\/p\u003e\n\u003cp\u003eThis can be accomplished in two ways:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV\/IR Cut Filter:\u003c\/strong\u003e For telescopes under approximately 120mm of aperture, a screw-in \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e can be employed in front of the telescope diagonal. It reflects unwanted ultraviolet and infrared radiation back out the front of the telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-Mounted ERF:\u003c\/strong\u003e For best performance, use a red or yellow glass front mount Energy Rejection Filter; it prevents almost all heat from entering the telescope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor brief observing sessions with less than 80mm of aperture when not using a tracking mount, it can be OK to use no energy rejection at all; be alert for any rise in temperature of your telescope, diagonal or Quark. A \u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003ewhite-light solar filter\u003c\/a\u003e or \u003ca href=\"\/en-int\/collections\/herschel-wedges\"\u003eHerschel wedge\u003c\/a\u003e cannot be used with the Quark.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e±0.5Å Wing Shift for Doppler Effects\u003c\/h3\u003e\n\u003cp\u003eThe Quark features a tuning knob that allows you to shift the filter's center wavelength by ±0.5Å from the central H-alpha line, with detents at every 0.1Å. This \"wing shift\" capability lets you observe Doppler-shifted features on the Sun, moving toward or away from you.\u003c\/p\u003e\n\u003cp\u003eAfter every adjustment of the knob, the filter must settle in temperature for approximately 5-10 minutes before the change becomes effective.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlue Shift (Counter-Clockwise):\u003c\/strong\u003e Turning the knob counter-clockwise shifts the center wavelength toward the blue wing, where features moving toward you will be brighter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed Shift (Clockwise):\u003c\/strong\u003e Turning the knob clockwise shifts toward the red wing; features moving away from you will be reddened.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e5V, 1.5A USB Power for Precision Heating\u003c\/h3\u003e\n\u003cp\u003eThe Fabry-Perot etalon at the core of the Quark is highly sensitive to temperature. To maintain its precise bandpass on the H-alpha line, the etalon is heated to approximately 100-150°F to control the wavelength passed. The heater and its electronics are all powered by a standard micro-B USB port.\u003c\/p\u003e\n\u003cp\u003eThe filter requires a power source capable of delivering 5V at 1.5A. The included 90-240VAC wall adapter with international plugs ensures you can power it from any standard outlet. For field use, an optional 8-hour battery pack is available, or you can use any portable USB power bank that meets the 1.5A requirement. A computer USB port or standard cell phone charger will not provide sufficient current.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAdapters, Focus, and Eyepiece Selection\u003c\/h3\u003e\n\u003cp\u003eThe Quark is designed for maximum compatibility and ease of use. It features a combination 1.25\" and 2\" snout on the telescope side, allowing it to be inserted directly into any standard diagonal. The eyepiece side has a 1.25\" female drawtube with a brass compression ring to protect the eyepiece.\u003c\/p\u003e\n\u003cp\u003eDue to the integrated barlow, the focal point shifts. Using the 1.25\" snout requires about 8mm of in-focus travel, while the 2\" snout requires about 10mm of out-focus travel. For visual use, Plössl eyepieces in the 25mm to 40mm range are recommended. At long focal ratios a high-powered eyepiece can exceed Dawes' limit, so an eyepiece of 32mm or greater gives the best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCapturing the Sun with Monochrome CCDs\u003c\/h3\u003e\n\u003cp\u003eThe Quark can also be used for solar imaging. For best results, use a monochrome astronomy camera, as color sensors only use 1 in 4 pixels to detect red light, reducing both resolution and sensitivity. Hydrogen-Alpha imaging is done in monochrome light, so a color camera provides no advantage.\u003c\/p\u003e\n\u003cp\u003eWhen imaging in monochromatic H-alpha light you may encounter interference patterns known as Newton's Rings, which are caused by the sensor and its cover slip acting as a small interferometer. Tilting the sensor slightly prevents the pattern. Optional T-thread and C-mount adapters are available, as well as specialized tilt adapters designed to correct for this phenomenon. Because the Quark creates a long effective focal length, imagers with smaller sensors can use optional \u003ca href=\"\/en-int\/collections\/flatteners-and-reducers\"\u003efocal reducers\u003c\/a\u003e to capture a wider field of view or the full solar disk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope works best with the Daystar Quark Chromosphere?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eDaystar Quark Chromosphere\u003c\/strong\u003e is specifically designed for \u003cstrong\u003erefractor telescopes with focal ratios from f\/4 to f\/9\u003c\/strong\u003e. It is not suited for off-axis (SCT or Dobsonian) application. The Quark performs best in refractors from f\/4 to f\/8.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an energy rejection filter (ERF) to use the Quark Chromosphere?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your telescope's aperture. An ERF is recommended for any refractor with an aperture of \u003cstrong\u003e80mm or larger\u003c\/strong\u003e, or when tracking the Sun for long periods. This can be a UV\/IR cut filter mounted before the diagonal or a full aperture red or yellow glass ERF in front of the telescope. For brief sessions with less than 80mm of aperture when not using a tracking mount, it can be OK to use no energy rejection at all, while staying alert for any rise in temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see the full solar disk with the Quark Chromosphere in my 102mm f\/7 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, you will see a magnified view of a portion of the Sun. The \u003cstrong\u003eDaystar Quark Chromosphere\u003c\/strong\u003e provides a full-disk view only in telescopes with a focal length of approximately \u003cstrong\u003e450mm or less\u003c\/strong\u003e. Your 102mm f\/7 refractor has a focal length of 714mm (102 * 7), which is too long to frame the entire Sun. It will give higher-magnification views of active regions and other surface details. At 102mm, an Energy Rejection Filter is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Quark Chromosphere and Prominence models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey are tuned for different primary targets.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003eQuark Chromosphere\u003c\/strong\u003e (this model) has a narrower bandpass (generally 0.5Å or below) for higher contrast on the Sun's surface, making it ideal for viewing filaments and plage.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003eQuark Prominence\u003c\/strong\u003e model has a wider bandpass (generally 0.6Å or above) for a brighter image of prominences.\u003c\/li\u003e\n\u003c\/ul\u003e\nDaystar says both versions show prominences, but filaments are only visible in the Chromosphere version.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the Daystar Quark Chromosphere powered in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark requires a \u003cstrong\u003eUSB 5V, 1.5A\u003c\/strong\u003e power source. While it comes with a wall adapter, for field use you can power it with any portable USB power bank that can supply at least 1.5 amps. An optional 8-hour battery pack is also available from Daystar. A standard computer USB port will not work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Quark Chromosphere take 5-6 minutes to warm up?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe internal Fabry-Perot etalon must be heated to a precise temperature to be tuned exactly to the \u003cstrong\u003e6562.8 Å\u003c\/strong\u003e Hydrogen-Alpha wavelength. The 5-6 minute settling time allows the internal heater and control electronics to bring the etalon to its stable operating temperature. The LED indicator turns from yellow to green when it's ready.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my high-power planetary eyepieces with the Daystar Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is not recommended. The Quark has an integrated \u003cstrong\u003e4.3x barlow\u003c\/strong\u003e, which already creates a very long effective focal length. At long focal ratios a high-powered eyepiece can exceed Dawes' limit and give a fuzzy disk without the ability to focus well. Plössl eyepieces of 25mm, 32mm, or 40mm give the best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the ±0.5Å tuning knob on the Quark Chromosphere?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe tuning knob shifts the filter's center wavelength by up to 0.5Å either way in 0.1Å steps. A feature moving towards you will be brighter in blue (counter-clockwise) wing shift, and one moving away will be reddened (clockwise). If the image lacks contrast, try adjusting the center wavelength.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quark Chromosphere for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. You can attach a monochrome astronomy camera to the 1.25\" eyepiece holder to capture high-resolution images. Because of the long focal length, you will get highly magnified images. For a wider field of view with smaller camera sensors, optional focal reducers can be used.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I store the Quark Chromosphere filter when not in use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eDaystar Quark Chromosphere\u003c\/strong\u003e should be stored with its end caps on in the included Twist-Case. For maximum longevity of the filter components, store it in a climate-controlled environment. Proper storage can extend the filter's life expectancy significantly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eAll-in-one Hydrogen-Alpha filter: Fabry-Perot etalon and blocking filter with integrated telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eChromosphere, SE (Standard Edition) uniformity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003eNot specified; Chromosphere units generally 0.5Å or below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e6562.8 Å (656.28 nm), Hydrogen-Alpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003ewing shift ±0.5Å with detents every 0.1Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eF\/4 to F\/9 refractors (best performance F\/4 to F\/8); not suited for off-axis (SCT or Dobsonian) use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarlow\u003c\/td\u003e\n\u003ctd\u003eIntegrated, fully baffled 2-element 4.3x telecentric barlow optimized for 656nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e20mm clear etalon aperture (manual); 21mm clear filter aperture (Daystar store)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-Band Blocking\u003c\/td\u003e\n\u003ctd\u003eX-ray to 2 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Disk\u003c\/td\u003e\n\u003ctd\u003ePasses the full solar disk for focal lengths under about 450mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Limit\u003c\/td\u003e\n\u003ctd\u003eNone; for apertures over 80mm a UV\/IR filter before the diagonal is suggested for energy rejection; all dedicated solar tracking applications should employ energy rejection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSun Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" and 2\" combo male snouts with safety indent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Point\u003c\/td\u003e\n\u003ctd\u003e1.25\" snout needs about 8mm in-focus; 2\" snout about 10mm out-focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with brass compression ring; optional 2\", SCT, T and C-mount accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 1.5A, female micro-B connector (required for operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC with US, UK, Euro and Australian plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Battery\u003c\/td\u003e\n\u003ctd\u003e8-hour battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eYellow while settling, green when ready and on band, red for a fault such as low voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSettling Time\u003c\/td\u003e\n\u003ctd\u003eApproximately 5-6 minutes after power-up or a wing shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e40-100°F ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e55mm diameter x 71mm x 146mm long\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eTwist-Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (blockers and trimmers pro-rated as wear items)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePower supply (90-240VAC wall adapter with US, UK, Euro and Australian plugs)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967454834973,"sku":"DAY-DSZ4C","price":1799.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quark-Solar-Filter-1__60627.1597187453.1280.1280.jpg?v=1684342393"},{"product_id":"daystar-quark-prominence-solar-filter","title":"Daystar Quark Prominence Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAll-in-one Hydrogen-Alpha Solar Filter\u003c\/li\u003e\n\u003cli\u003eProminence Model for Bright, High-Contrast Eruptions\u003c\/li\u003e\n\u003cli\u003eIntegrated 4.3x Telecentric Barlow\u003c\/li\u003e\n\u003cli\u003eFor F\/4 to F\/9 Refractor Telescopes\u003c\/li\u003e\n\u003cli\u003eUSB Powered (5V, 1.5A)\u003c\/li\u003e\n\u003cli\u003e±0.5Å Wing Shift Tuning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark Prominence Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDaystar Quark Prominence Solar Filter\u003c\/strong\u003e is an all-in-one hydrogen-alpha \"\u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e\" that, in Daystar's words, turns your \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e into a safe \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescope\u003c\/a\u003e. This integrated unit includes a Fabry-Perot etalon tuned to the 6562.8 Å wavelength, a 12mm blocking filter, and a 4.3x telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003ebarlow\u003c\/a\u003e, all powered by a 5V, 1.5A USB connection. Designed for F\/4 to F\/9 refractors, it offers ±0.5Å wing shift tuning for observing Doppler-shifted phenomena and gives brighter views of solar prominences than the Chromosphere model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe All-in-One H-alpha 'Eyepiece' for F\/4 to F\/9 Refractors\u003c\/h3\u003e\n\u003cp\u003eDaystar's Quark simplifies hydrogen-alpha astronomy by combining a telecentric barlow, adapters, and a Fabry-Perot etalon into a single, compact device. This integrated design eliminates the cost and complexity of assembling separate components, allowing you to simply insert the Quark into your diagonal, add an eyepiece, and begin observing after a 5-6 minute warm-up period. It is one lightweight eyepiece-sized device, with power consumption low enough to operate all day off a small optional battery pack.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eObserving the Sun at 6562.8 Å: Prominences and Flares\u003c\/h3\u003e\n\u003cp\u003eEach Quark is qualified to show either prominences or surface detail; this model is qualified for prominences. By operating at the hydrogen-alpha wavelength of 6562.8 Å, it reveals the Sun's dynamic chromosphere. No exact FWHM is specified; Prominence units are generally 0.6Å or above, a wider bandwidth that gives a brighter image. This model is recommended for users mostly interested in prominences or who want a brighter image. Filaments are only visible in the Chromosphere version, so this model trades surface contrast for brighter prominences.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptical Design: A 4.3x Telecentric Barlow for Superior Field Flatness\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Quark is a custom 2-element, 4.3x telecentric barlow, fully optimized with coatings and an optical design specifically for the 656.28 nm H-alpha wavelength. The Fabry-Perot etalon requires a highly parallel beam of light (F\/15 to F\/30) to achieve its narrow bandpass. Unlike a standard barlow, this telecentric lens ensures the light rays are parallel when they pass through the etalon, and it offers superior field flatness. Baffles have been added to increase contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuark Prominence vs. Chromosphere: Choosing Your Observing Goal\u003c\/h3\u003e\n\u003cp\u003eDaystar offers two Quark models tuned for different observing goals. While both operate at the same H-alpha wavelength, their bandpass characteristics are different, leading to a trade-off between surface contrast and prominence brightness.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuark Prominence (This Model):\u003c\/strong\u003e With a bandpass generally 0.6Å or wider, this filter passes more light. It is recommended for users mostly interested in prominences or who want a brighter image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuark Chromosphere:\u003c\/strong\u003e This model has a narrower bandpass (generally 0.5Å or below), which increases contrast on the solar disk itself. Filaments are only visible in the Chromosphere version, and it still gives a great view of prominences; most users choose it for its versatility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTelescope Compatibility: Optimized for Refractors with Focal Lengths Under 450mm\u003c\/h3\u003e\n\u003cp\u003eEngineered for versatility, the Quark is designed for use with refractors with a focal ratio between F\/4 and F\/9, with best performance from F\/4 to F\/8. Because the integrated 4.3x barlow magnifies the image, the Quark can show the full solar disk only in telescopes with a focal length under approximately 450mm. Longer focal length refractors can be used, but they will provide higher-magnification views of specific regions on the Sun rather than the full disk. The Quark is not suited for off-axis (SCT or \u003ca href=\"\/en-int\/collections\/dobsonians\"\u003eDobsonian\u003c\/a\u003e) application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolar Safety: Energy Rejection Guidelines for Apertures Over 80mm\u003c\/h3\u003e\n\u003cp\u003eConcentrated sunlight can create very high temperatures where it falls, so care must be taken to prevent melted components or fire. To prevent damage, use an Energy Rejection Filter on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. The guidance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess than 80mm Aperture:\u003c\/strong\u003e For brief observing sessions when not using a tracking mount, it can be OK to use no energy rejection at all. Be alert for any rise in temperature of your telescope, diagonal or Quark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e80mm Aperture or More:\u003c\/strong\u003e Use energy rejection. For telescopes under approximately 120mm of aperture, a screw-in \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e can be employed in front of the diagonal; it reflects UV and IR light back out the front of the telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar Tracking and Best Performance:\u003c\/strong\u003e All dedicated solar tracking applications should employ energy rejection, and for best performance a red or yellow glass front mount ERF should be used, as it prevents almost all heat from entering the telescope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA \u003ca href=\"\/en-int\/collections\/herschel-wedges\"\u003eHerschel wedge\u003c\/a\u003e or white light filter cannot be used with the Quark: these pass very little light by design and would give an extremely dark image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Tuning: ±0.5Å Wing Shift for Doppler Events\u003c\/h3\u003e\n\u003cp\u003eThe Quark's etalon is heated to a precise temperature to stay \"on band\" at the 6562.8 Å H-alpha line. A tuning knob allows you to shift this center wavelength by up to ±0.5Å, with detents every 0.1Å. This \"wing shift\" capability lets you observe Doppler-shifted features. A feature moving towards you will be brighter in blue (counter-clockwise) wing shift, and one moving away will be reddened (clockwise). After every adjustment the filter must settle in temperature for approximately 5-10 minutes before the change becomes effective.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e5V\/1.5A USB Power: All-Day Operation From a Palm-Sized Pack\u003c\/h3\u003e\n\u003cp\u003eThe Quark's internal heating system, which heats the etalon to approximately 100-150°F, runs on a common 5V, 1.5A USB power source via a micro-B connector. You can power it from the included 90-240VAC wall adapter, which comes with international plugs, or another USB power source rated for at least 1.5 amps at 5 volts, such as Daystar's optional 8-hour battery pack. An LED indicator shows the filter's status: yellow while the temperature settles, green when on-band and ready, and red to indicate a fault like low voltage. Computer USB ports and cell phone chargers do not normally support this much power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVisual Use: Achieving Focus from 8mm In-Travel to 10mm Out-Travel\u003c\/h3\u003e\n\u003cp\u003eThe Quark is designed to be placed directly into your telescope's diagonal. It features combo 1.25\" and 2\" male snouts with a safety indent. The focus position depends on which snout you use: the 1.25\" snout requires approximately 8mm of in-focus travel, while the 2\" snout requires about 10mm of out-focus travel from your telescope's normal focal plane. The eyepiece side features a 1.25\" female drawtube with a brass compression ring to protect the eyepiece. Plössl eyepieces of 25mm, 32mm and 40mm are recommended; at long focal ratios a high-powered eyepiece can exceed Dawes' limit, so an eyepiece of 32mm or greater gives the best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging with the Quark: Adapters and Techniques for Monochrome CCDs\u003c\/h3\u003e\n\u003cp\u003eFor the highest resolution and sensitivity, image with a monochrome CCD or CMOS camera. On a color sensor only 1 in 4 pixels detect red light, giving 1\/4 the sensitivity and 1\/2 the resolution of a monochrome chip. Because the Quark outputs a very long effective focal length, imagers with small sensors may require a \u003ca href=\"\/en-int\/collections\/flatteners-and-reducers\"\u003efocal reducer\u003c\/a\u003e to capture a wider field of view. To combat interference patterns (Newton's rings) common in monochromatic imaging, the sensor must be tilted slightly; Daystar's imaging tilt adapter does this. Optional T-mount and C-mount accessories are available to connect a variety of cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCare and Maintenance: Your 5-Year Quark Warranty\u003c\/h3\u003e\n\u003cp\u003eWhen not in use, the Quark should be stored with its end caps on in the included Twist-Case in a climate-controlled environment ; climate-controlled storage extends optical filter life expectancy up to 2-3 times. The optical surfaces should not be touched; dust can be removed with a gentle squeeze bulb. Cleaning of smudges or fingerprints should ideally be performed by Daystar. Opening the filter assembly will void the warranty. The Quark is covered by a 5-year manufacturer warranty, with blockers and trimmers considered wear items and warranted on a pro-rated basis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eGetting Started: Your First Observing Session with the Quark\u003c\/h3\u003e\n\u003cp\u003eSetting up for your first view is straightforward. First, ensure your telescope is pointing away from the Sun. Install your diagonal, then insert the Quark into the diagonal. Connect the USB power supply and wait for the LED indicator to turn green, which takes about 5-6 minutes. Insert a low-power eyepiece (25mm or longer is recommended) into the Quark. Now, with all filters in place, you can safely point your telescope at the Sun using a solar finder. Start with the tuning knob in the central position and slowly adjust your focuser to bring the Sun's limb into sharp view. Once focused, you can begin exploring the chromosphere. With 80mm of aperture or more, fit an Energy Rejection Filter first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Daystar Quark Prominence and Quark Chromosphere models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe choice depends on your primary observing target. The \u003cstrong\u003eQuark Prominence\u003c\/strong\u003e (this model) has a wider bandpass (generally 0.6Å or above) that gives a brighter image of prominences. The \u003cstrong\u003eQuark Chromosphere\u003c\/strong\u003e has a narrower bandpass for higher contrast on surface details like filaments and plage on the solar disk, and filaments are only visible in the Chromosphere version; it still shows prominences.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an energy rejection filter (ERF) with the Daystar Quark Prominence?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUse an Energy Rejection Filter on telescopes of \u003cstrong\u003e80mm aperture or more\u003c\/strong\u003e, or when tracking the Sun for long periods: a UV\/IR cut filter mounted before the diagonal or a full aperture red or yellow glass ERF in front of the telescope. For brief sessions with less than 80mm of aperture when not using a tracking mount, it can be OK to use no energy rejection at all; be alert for any rise in temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Quark Prominence perform on my 80mm f\/7 refractor when viewing a large eruptive prominence?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 80mm f\/7 refractor is within the Quark's F\/4 to F\/9 range. The Quark's internal 4.3x barlow will increase your telescope's effective focal length to 2408mm (560mm x 4.3), providing high magnification on solar features. The Prominence model gives a brighter image of prominences on the limb. At 80mm aperture, an Energy Rejection Filter is recommended (a UV\/IR cut filter before the diagonal or a front-mount glass ERF).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see the full solar disk with the Daystar Quark Prominence?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but only with a telescope that has a focal length of approximately \u003cstrong\u003e450mm or less\u003c\/strong\u003e. The Quark's integrated 4.3x barlow significantly increases the effective focal length of your system. With telescopes longer than 450mm, you will get a magnified view of a portion of the Sun, which is ideal for studying specific active regions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat eyepieces work best with the Daystar Quark Prominence?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUse simple, high-quality Plössl eyepieces with focal lengths of \u003cstrong\u003e25mm, 32mm, or 40mm\u003c\/strong\u003e. At long focal ratios a high-powered eyepiece can exceed Dawes' limit, so an eyepiece of 32mm or greater gives the best results. In testing, zooms and other fast wide-field designs typically performed very badly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Quark Prominence in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark is powered by a standard USB \u003cstrong\u003e5V, 1.5A\u003c\/strong\u003e connection. You can use the included 90-240VAC wall adapter or, for field use, another USB power source rated for at least 1.5 amps at 5 volts, such as Daystar's optional 8-hour battery pack. This makes it easy to conduct observing sessions away from AC power sources. A computer USB port will not work as it cannot supply enough current.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Daystar Quark Prominence filter need power?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe core of the filter is a solid-state Fabry-Perot etalon. To transmit the precise H-alpha wavelength of 6562.8 Å, the etalon must be heated to a specific, stable temperature (approximately 100-150°F). The USB power runs a microcontroller and heating element that maintains this temperature, ensuring the filter stays on-band for optimal performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the tuning knob on the Quark Prominence do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe tuning knob allows you to \"wing shift\" the filter's central wavelength by \u003cstrong\u003e±0.5Å\u003c\/strong\u003e in 0.1Å increments. This is used to view high-velocity solar features that are Doppler-shifted off the main H-alpha line. A feature moving towards you will be brighter in blue (counter-clockwise) wing shift, and one moving away will be reddened (clockwise).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quark Prominence on my Schmidt-Cassegrain or Dobsonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Quark is designed for \u003cstrong\u003eF\/4 to F\/9 refractor telescopes\u003c\/strong\u003e, and it is not suited for off-axis (SCT or Dobsonian) application. Daystar's Combo Quark is the model for \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSCTs\u003c\/a\u003e and \u003ca href=\"\/en-int\/collections\/maksutov-cassegrain-telescopes\"\u003eMaksutovs\u003c\/a\u003e with an off-axis ERF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does my view through the Quark Prominence look blurry or lack contrast?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePoor views are most often caused by atmospheric \"seeing.\" Daytime solar observing is very sensitive to heat rising from pavement, rooftops, or even the ground. For best results, observe over grass on a day with stable air. If the image lacks contrast, you can also try adjusting the tuning knob a few clicks clockwise and waiting 5-10 minutes for the filter to settle, as heavy accessories or a loose connection can cause droop, which results in blue shift.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different LED colors on the Quark Prominence mean?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe LED indicates the filter's status:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYellow:\u003c\/strong\u003e Temperature settling. Settling takes approximately 5-6 minutes after power up or a change of wing shift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen:\u003c\/strong\u003e The filter has reached its stable operating temperature and is on-band. You are ready to observe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed:\u003c\/strong\u003e A fault such as low voltage. This usually means the Quark is not receiving enough voltage: recharge the battery or use the supplied wall adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eAll-in-one Hydrogen-Alpha filter: Fabry-Perot etalon and blocking filter with integrated telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eProminence, SE (Standard Edition) uniformity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003eNot specified; Prominence units generally 0.6Å or above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e6562.8 Å (656.28 nm), Hydrogen-Alpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003ewing shift ±0.5Å with detents every 0.1Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eF\/4 to F\/9 refractors (best performance F\/4 to F\/8); not suited for off-axis (SCT or Dobsonian) use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarlow\u003c\/td\u003e\n\u003ctd\u003eIntegrated, fully baffled 2-element 4.3x telecentric barlow optimized for 656nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e20mm clear etalon aperture (manual); 21mm clear filter aperture (Daystar store)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-Band Blocking\u003c\/td\u003e\n\u003ctd\u003eX-ray to 2 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Disk\u003c\/td\u003e\n\u003ctd\u003ePasses the full solar disk for focal lengths under about 450mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Limit\u003c\/td\u003e\n\u003ctd\u003eNone; for apertures over 80mm, use a UV\/IR filter before the diagonal for energy rejection; all dedicated solar tracking applications should employ energy rejection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSun Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" and 2\" combo male snouts with safety indent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Point\u003c\/td\u003e\n\u003ctd\u003e1.25\" snout needs about 8mm in-focus; 2\" snout about 10mm out-focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with brass compression ring; optional 2\", SCT, T and C-mount accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 1.5A, female micro-B connector (required for operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC with US, UK, Euro and Australian plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Battery\u003c\/td\u003e\n\u003ctd\u003e8-hour battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eYellow while settling, green when ready and on band, red for a fault such as low voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSettling Time\u003c\/td\u003e\n\u003ctd\u003eApproximately 5-6 minutes after power-up or a wing shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e40-100°F ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e55mm diameter x 71mm x 146mm long\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eTwist-Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (blockers and trimmers pro-rated as wear items)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePower supply (90-240VAC wall adapter with US, UK, Euro and Australian plugs)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967454900509,"sku":"DAY-DSZ4P","price":1799.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quark-Solar-Filter-1__22254.1597187418.1280.1280.jpg?v=1684342396"},{"product_id":"daystar-quark-gemini-chrom-prom-switchable-solar-filter","title":"Daystar Quark Gemini Chrom\/Prom Switchable Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n  \u003cli\u003eDual switchable Fabry-Perot etalons for Hydrogen-Alpha (6562.8 Å) viewing\u003c\/li\u003e\n  \u003cli\u003eInstantly select a ≤0.5Å bandpass for chromosphere detail or a ≥0.6Å bandpass for bright prominences\u003c\/li\u003e\n  \u003cli\u003eIntegrated 4.3x telecentric barlow optimizes F\/4 to F\/9 refractors\u003c\/li\u003e\n  \u003cli\u003eRequires 5V, 2.0A USB power for precision thermal tuning\u003c\/li\u003e\n  \u003cli\u003eFits both 1.25\" and 2\" focusers with combo snout design\u003c\/li\u003e\n  \u003cli\u003eIncludes Pelican-style case and universal 90-240VAC power adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n  \u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n  \u003cli\u003eFAQ\u003c\/li\u003e\n  \u003cli\u003eSpecifications\u003c\/li\u003e\n  \u003cli\u003eIn the Box\u003c\/li\u003e\n  \u003cli\u003eDownloads\u003c\/li\u003e\n  \u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n  \u003cli class=\"active\"\u003e\n    \u003cdiv\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section-center\"\u003e\n          \u003ch2\u003eDaystar Quark Gemini Chrom\/Prom Switchable Solar Filter\u003c\/h2\u003e\n          \u003cp\u003eThe \u003cstrong\u003eDaystar Quark Gemini Chrom\/Prom Switchable Solar Filter\u003c\/strong\u003e combines two independent, hand-matched Fabry-Perot etalons into a single eyepiece-style unit for observing the Sun at the 6562.8 Å Hydrogen-Alpha wavelength. A simple slide-action mechanism instantly switches your view between a narrow bandpass of 0.5Å or less for high-contrast surface detail and a wider bandpass of 0.6Å or more for bright limb prominences. The integrated 4.3x telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003ebarlow\u003c\/a\u003e brings the light from F\/4 to F\/9 \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e to an F\/17 to F\/38 final image, and the etalons are heated from a 5V, 2.0A USB power source. It passes the full solar disk for focal lengths under about 450mm.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eAn All-in-One, Dual-Bandpass 6562.8 Å Solar Filter\u003c\/h3\u003e\n          \u003cp\u003eThe Quark Gemini is an all-in-one H-alpha filter for refractors. It contains two distinct etalons, a 12mm blocking filter, and a 4.3x telecentric barlow. This all-in-one design eliminates the complexity of stacking separate components.\u003c\/p\u003e\n          \u003cp\u003eOutreach astronomers can use the prom vs chrom switch to demonstrate each feature, with an extra teaching moment about wing shift in fast moving prominences, and imagers can use it to create comparison images without exchanging equipment or refocusing on short lived features. Rather than choosing between the Chromosphere and Prominence models, the Gemini gives you both.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eChromosphere vs. Prominence Views at ≤0.5Å and ≥0.6Å\u003c\/h3\u003e\n          \u003cp\u003eThe Gemini's two etalons are selected to provide two fundamentally different views of the Sun. With a push of the slider, you engage the Chromosphere etalon, which has a bandpass of 0.5Å or less. This narrower window gives more surface contrast; filaments are only visible in the Chromosphere version.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e\n\u003cstrong\u003eChromosphere View (≤0.5Å):\u003c\/strong\u003e Dark, thread-like filaments stand out against the brighter surface. Active regions, bright plage around sunspots and spicules at the limb are also shown.\u003c\/li\u003e\n            \u003cli\u003e\n\u003cstrong\u003eProminence View (≥0.6Å):\u003c\/strong\u003e Sliding to the other position engages the ≥0.6Å etalon. This wider bandpass gives broad stroked prominences in a brighter image.\u003c\/li\u003e\n          \u003c\/ul\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eThe Integrated 4.3x Telecentric Barlow System\u003c\/h3\u003e\n          \u003cp\u003eA Fabry-Perot etalon's performance is critically dependent on the angle of light passing through it; it requires a slow, near-parallel beam (F\/15 to F\/30) to achieve its specified bandpass. The Quark Gemini's integrated 2-element, 4.3x telecentric barlow achieves this for F\/4 to F\/9 refractors.\u003c\/p\u003e\n          \u003cp\u003eThis custom optical system is fully baffled and optimized specifically for the 656nm H-alpha wavelength, and it offers superior field flatness. For a telescope operating at F\/7, the barlow gives about F\/30. This built-in solution means you don't need to calculate or purchase a separate barlow, as the optical correction is already part of the design.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eTwo SE-Grade Etalons and Instant, Parfocal Switching\u003c\/h3\u003e\n          \u003cp\u003eAt the heart of the Gemini are two hand-matched, SE-grade Fabry-Perot etalons. A simple, robust slide mechanism moves one etalon or the other into the light path. You can push the slider arm side to side, like in an eye exam, with no equipment swapping or refocusing of any kind.\u003c\/p\u003e\n          \u003cp\u003eCompared with two separate Quark filters, the Gemini keeps both etalons in one device with one \u003ca href=\"\/en-int\/collections\/power-accessories\"\u003epower cable\u003c\/a\u003e, so there is no filter to swap and no refocusing. This is ideal for outreach, where you can demonstrate the difference between surface and limb detail, and for imaging, where you can capture both without losing time on a short-lived event.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eOptimized for F\/4 to F\/9 Refractors\u003c\/h3\u003e\n          \u003cp\u003eThe Daystar Quark Gemini is specifically designed for use with refractor telescopes with focal ratios from F\/4 to F\/9, with best performance between F\/4 and F\/8. With the integrated 4.3x barlow these give an F\/17 to F\/38 final image. The filter is not suited for off-axis (SCT or dob) application. Daystar's store page gives F\/5 to F\/8 refractors; its manual gives F\/4 to F\/9.\u003c\/p\u003e\n          \u003cp\u003eThe 4.3x magnification factor means the Gemini is best suited for high-magnification views of specific regions. On refractors with a focal length under about 450mm, you can still frame the full solar disk. On longer instruments, you will be exploring sections of the Sun, for detailed studies of active regions, sunspot groups, and large prominence structures.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eSolar Safety: Energy Rejection for Apertures Over 80mm\u003c\/h3\u003e\n          \u003cp\u003eThe Quark Gemini contains an integrated 12mm blocking filter, with off-band blocking from X-ray to 2 microns. Concentrated sunlight can create very high temperatures where it falls, so care must be taken to prevent melted components or fire, and an Energy Rejection Filter is recommended on telescopes of 80mm aperture or more, or when tracking the Sun for long periods.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e\n\u003cstrong\u003eLess than 80mm of aperture:\u003c\/strong\u003e For brief observing sessions when not using a tracking mount, it can be OK to use no energy rejection at all. Be alert for any rise in temperature of your telescope, \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e or filter.\u003c\/li\u003e\n            \u003cli\u003e\n\u003cstrong\u003e80mm of aperture or more:\u003c\/strong\u003e Use energy rejection: for telescopes under approximately 120mm, a screw-in \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e in front of the diagonal reflects UV and IR light back out the front of the telescope; for best performance, a red or yellow glass front mount ERF should be used.\u003c\/li\u003e\n            \u003cli\u003e\n\u003cstrong\u003eDedicated Tracking:\u003c\/strong\u003e All dedicated solar tracking applications should employ energy rejection.\u003c\/li\u003e\n          \u003c\/ul\u003e\n          \u003cp\u003eA \u003ca href=\"\/en-int\/collections\/herschel-wedges\"\u003eHerschel wedge\u003c\/a\u003e or white light filter cannot be used with the Quark: these pass very little light by design and would give an extremely dark image.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003ePrecision Tuning: ±0.5Å Wing Shift and 10-20 Minute Warm-Up\u003c\/h3\u003e\n          \u003cp\u003eEach of the Gemini's etalons has its own dedicated tuning knob, allowing you to fine-tune the filter's central wavelength. The knobs provide a wing shift of ±0.5Å from the central 6562.8 Å line, with distinct detents every 0.1Å. This lets you restore contrast if the view lacks it and observe Doppler-shifted features.\u003c\/p\u003e\n          \u003cp\u003eA feature moving towards you will be brighter in blue (counter-clockwise) wing shift, and one moving away will be reddened (clockwise). After plugging in the filter or adjusting the tuning, the unit requires approximately 10-20 minutes for the internal heater to stabilize the etalon's temperature. The LED indicator turns from yellow (settling) to green when it is on-band and ready for observation.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003e5V, 2.0A USB Power for Precision Heating\u003c\/h3\u003e\n          \u003cp\u003eThe Quark Gemini's ability to stay precisely on the H-alpha bandpass depends on its internal heating system, which maintains the Fabry-Perot etalons at a constant, elevated temperature (approximately 100-150°F). This system requires a stable USB power source capable of delivering 5V at 2.0A (10W).\u003c\/p\u003e\n          \u003cp\u003eThe filter includes a 90-240VAC wall adapter with a set of international plugs (US, UK, Euro, Australian) for use at home. For field use, you can power it with an optional 8-hour battery pack or any other USB power source rated for at least 2.0 amps at 5 volts. Computer USB ports and cell phone chargers do not normally support this much power.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eVisual Ergonomics: 1.25\" \u0026amp; 2\" Snouts and Eyepiece Selection\u003c\/h3\u003e\n          \u003cp\u003eThe Gemini is designed for straightforward integration into your existing setup. It features a versatile combo male snout that fits directly into both 1.25\" and 2\" diagonals or \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocusers\u003c\/a\u003e, secured by a safety indent. The \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e side has a standard 1.25\" female drawtube with a brass compression ring to protect your eyepiece.\u003c\/p\u003e\n          \u003cp\u003eDue to the long effective focal length created by the 4.3x barlow, eyepiece choice is important. Plössl eyepieces of 25mm, 32mm and 40mm are recommended; at long focal ratios a high-powered eyepiece can exceed Dawes' limit, so an eyepiece of 32mm or greater gives the best results.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003eSolar Imaging with the Quark Gemini\u003c\/h3\u003e\n          \u003cp\u003eFor imagers, the Gemini allows capture of both high-contrast surface detail and bright prominences in a single session. For best results, use a monochrome camera, as a color sensor's Bayer matrix only uses one in four pixels for red light, reducing both sensitivity and resolution at the H-alpha wavelength.\u003c\/p\u003e\n          \u003cp\u003eTo connect a camera, optional T-thread and C-mount adapters are available. A common issue when imaging in monochromatic light is the appearance of interference patterns (Newton's Rings). This can be corrected by using an optional tilt adapter to slightly angle the camera sensor relative to the filter. Because the Quark produces a large image scale, imagers with smaller sensors may also benefit from an optional \u003ca href=\"\/en-int\/collections\/flatteners-and-reducers\"\u003efocal reducer\u003c\/a\u003e to capture a wider field of view.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"DAV-bg-light\"\u003e\n        \u003cdiv class=\"DAV-section\"\u003e\n          \u003ch3\u003ePelican Case Storage and 5-Year Warranty\u003c\/h3\u003e\n          \u003cp\u003eThe Quark Gemini is a precision optical instrument that requires proper care. It ships in a watertight pelican style equipment case for dust and humidity-free storage. Climate-controlled storage extends optical filter life expectancy up to 2-3 times.\u003c\/p\u003e\n          \u003cp\u003eDaystar backs the Quark Gemini with a 5-year warranty, covering defects in materials and workmanship. Daystar considers blockers and trimmers wear items and are covered on a pro-rated basis over the five-year term.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Daystar Quark Gemini over a single-bandpass Quark?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe Quark Gemini's primary advantage is its ability to instantly switch between two different H-alpha bandpasses (≤0.5Å for chromosphere and ≥0.6Å for prominences) with a simple slider. There is no equipment swapping or refocusing of any kind.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope works best with the Quark Gemini?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe Quark Gemini is specifically designed for \u003cstrong\u003erefractor telescopes with a focal ratio between F\/4 and F\/9\u003c\/strong\u003e. Its internal 4.3x barlow gives these an F\/17 to F\/38 final image. It is not suited for off-axis (SCT or dob) application.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an Energy Rejection Filter (ERF) with the Quark Gemini?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eUse an Energy Rejection Filter on telescopes of \u003cstrong\u003e80mm aperture or more\u003c\/strong\u003e, or when tracking the Sun for long periods: a UV\/IR cut filter mounted before the diagonal or a full aperture red or yellow glass ERF in front of the telescope. For brief sessions with less than 80mm of aperture when not using a tracking mount, it can be OK to use no energy rejection at all; be alert for any rise in temperature.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the Quark Gemini to observe a solar flare on the edge of the Sun?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eFor a dynamic event like a solar flare erupting from the limb, you would slide the Quark Gemini to the \u003cstrong\u003eProminence setting (≥0.6Å)\u003c\/strong\u003e. This wider bandpass gives a brighter view at the limb. You could then use the ±0.5Å wing-shift tuning: features moving towards you are brighter in blue wing shift and those moving away are reddened.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see the full disk of the Sun with the Quark Gemini in my 600mm focal length refractor?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eNo. The Quark Gemini can show the full solar disk only on telescopes with a focal length of approximately \u003cstrong\u003e450mm or less\u003c\/strong\u003e. The built-in 4.3x barlow increases your telescope's effective focal length significantly (a 600mm scope becomes 2580mm), providing high-magnification views of specific solar regions rather than the full disk.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to refocus when switching between the ≤0.5Å and ≥0.6Å filters on the Quark Gemini?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eNo. A key design feature of the Quark Gemini is that the two Fabry-Perot etalons are used with \u003cstrong\u003eno refocusing of any kind\u003c\/strong\u003e. You can switch between the chromosphere and prominence views using the slider without any need to adjust your telescope's focuser.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I power the Daystar Quark Gemini from a portable battery in the field?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eYes. The Quark Gemini requires a \u003cstrong\u003e5V, 2.0 Amp (10W)\u003c\/strong\u003e power source via its micro-USB port. In the field, use Daystar's optional 8-hour battery pack or another USB source rated for at least 2.0 amps at 5 volts. Computer USB ports and cell phone chargers do not normally support this much power.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Quark Gemini work with my 2-inch eyepieces?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eOut of the box, the Quark Gemini comes with a 1.25\" female drawtube for 1.25\" eyepieces. While its combo snout fits into a 2\" focuser, using 2\" eyepieces requires an \u003cstrong\u003eoptional 2\" eyepiece adapter\u003c\/strong\u003e, which is available separately.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different LED colors on the Quark Gemini mean?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe LED indicator shows the filter's status:\n        \u003c\/p\u003e\n\u003cul\u003e\n          \u003cli\u003e\n\u003cstrong\u003eYellow:\u003c\/strong\u003e Temperature settling, approximately 10-20 minutes after power up or a change of wing shift.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eGreen:\u003c\/strong\u003e The filter is at the correct temperature, on-band, and ready for observation.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eRed:\u003c\/strong\u003e A fault such as low voltage; this usually means the filter is not receiving enough voltage.\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does my view through the Quark Gemini look blurry or lack contrast?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003ePoor views are often caused by daytime \"seeing\" conditions, turbulence in the atmosphere from ground heat. Observing over grass instead of pavement can help. If the view lacks contrast, the filter may need tuning. Heavy accessories or a loose connection can cause droop, which results in blue shift: turn the knob clockwise 2-3 clicks and wait for the filter to settle. Blurry views can also result from using an eyepiece that is too powerful for the long effective focal length.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ctable class=\"DAV-specifications\"\u003e\n      \u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eTwo independent Fabry-Perot etalons with slide-action switching, integrated telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEtalons\u003c\/td\u003e\n\u003ctd\u003eHand-matched SE-grade pair, independently tuneable; Chromosphere etalon generally 0.5Å or below, Prominence etalon generally 0.6Å or above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e6562.8 Å (656.28 nm), Hydrogen-Alpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eTwo tuning knobs, wing shift ±0.5Å with detents every 0.1Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eF\/4 to F\/9 refractors (best performance F\/4 to F\/8); not suited for off-axis (SCT or Dobsonian) use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarlow\u003c\/td\u003e\n\u003ctd\u003eIntegrated, fully baffled 2-element 4.3x telecentric barlow optimized for 656nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e20mm clear etalon aperture (manual); 22mm clear eyepiece aperture (Daystar store)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-Band Blocking\u003c\/td\u003e\n\u003ctd\u003eX-ray to 2 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Disk\u003c\/td\u003e\n\u003ctd\u003ePasses the full solar disk for focal lengths under about 450mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Limit\u003c\/td\u003e\n\u003ctd\u003eNone; for apertures over 80mm, use a UV\/IR filter before the diagonal for energy rejection; all dedicated solar tracking applications should employ energy rejection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSun Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" and 2\" combo male snouts with safety indent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Point\u003c\/td\u003e\n\u003ctd\u003e1.25\" snout needs about 8mm in-focus; 2\" snout about 10mm out-focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with brass compression ring; optional 2\", SCT, T and C-mount accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 2.0A (10W), female micro-B connector (required for operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC with US, UK, Euro and Australian plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Battery\u003c\/td\u003e\n\u003ctd\u003e8-hour battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eYellow while settling, green when ready and on band, red for a fault such as low voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSettling Time\u003c\/td\u003e\n\u003ctd\u003eApproximately 10-20 minutes after power-up or a wing shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e40-100°F ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e158mm wide, 152mm tall, 73mm deep\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003ePelican-style protective case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (blockers and trimmers pro-rated as wear items)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003echromosphere_etalon_max: 0.5 Å; prominence_etalon_min: 0.6 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark Gemini filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePower supply (90-240VAC wall adapter with US, UK, Euro and Australian plugs)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePelican-style protective case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Gemini_Manual.pdf\" target=\"_blank\"\u003e\n          \u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\n            \u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\n          \u003c\/svg\u003e\n          \u003cdiv\u003e\n            \u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967454998813,"sku":"DAY-DSZ4G","price":3633.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quark-Gemini-DSZ4G__39151.1650381642.1280.1280.jpg?v=1684342392"},{"product_id":"daystar-combo-quark-chromosphere-solar-filter","title":"Daystar Combo Quark Chromosphere Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAll-in-one Hydrogen-Alpha solar filter for chromosphere viewing\u003c\/li\u003e\n\u003cli\u003eOptimized for F\/15 to F\/30 refractors, SCTs, and Maksutovs\u003c\/li\u003e\n\u003cli\u003eBandpass generally 0.5Å or below for high-contrast surface detail\u003c\/li\u003e\n\u003cli\u003eUSB-powered (5V, 1.5A) for field use with optional battery pack\u003c\/li\u003e\n\u003cli\u003eSCTs need an off-axis ERF (sold separately)\u003c\/li\u003e\n\u003cli\u003e5-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Combo Quark Chromosphere Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDaystar Combo Quark Chromosphere Solar Filter\u003c\/strong\u003e is an all-in-one Hydrogen-Alpha \"\u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e\" that transforms long focal ratio telescopes into dedicated solar instruments. It is rated for F\/15 to F\/30 \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e in full aperture, and for \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSCTs\u003c\/a\u003e or \u003ca href=\"\/en-int\/collections\/maksutov-cassegrain-telescopes\"\u003eMaksutovs\u003c\/a\u003e used with an off axis Energy Rejection Filter. This Chromosphere model is qualified to deliver a bandpass of generally 0.5Å or below at the 6562.8 Å wavelength, requires a 5V, 1.5A USB power source to maintain its precise internal temperature, and allows for ±0.5Å of wing shift tuning to study Doppler effects in solar features. It has an integrated 25mm blocking filter and needs 67mm of rearward focus travel, or 99mm with the wedge adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe Daystar Combo Quark: An All-in-One 6562.8 Å Solar Eyepiece\u003c\/h3\u003e\n\u003cp\u003eThe Daystar Combo Quark simplifies Hydrogen-Alpha solar astronomy by integrating a Fabry-Perot etalon, blocking filter, adapters, and snouts into a single, compact unit the size of a large eyepiece. This design eliminates the need to assemble a complex and costly filter train. It inserts directly into a 1.25\" diagonal, accepts a standard 1.25\" eyepiece, and is optimized for the 6562.8 Å wavelength of H-alpha light.\u003c\/p\u003e\n\u003cp\u003eThis filter is designed for observers who already own a long focal ratio telescope and want to explore the sun without investing in a new, dedicated solar scope. If light reaches the filter at an angle it causes wing shift, so the Combo Quark needs the slow F\/15 to F\/30 light of these instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eObserving the Chromosphere with a Bandpass of ~0.5Å\u003c\/h3\u003e\n\u003cp\u003eWith a bandpass generally 0.5Å or narrower, the Combo Quark Chromosphere model is built to maximize contrast on the sun's turbulent surface. This narrow window into the H-alpha line isolates features in the chromosphere, a layer of incandescent gas above the visible photosphere. Instead of a blank, white disk, you see a textured surface shaped by magnetic fields.\u003c\/p\u003e\n\u003cp\u003eThrough the eyepiece, you can expect to resolve a wealth of detail that changes daily, even hourly. Look for these key features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilaments:\u003c\/strong\u003e These are vast ribbons of plasma held suspended above the sun's surface by magnetic fields. They appear as dark, snaking lines because they are cooler than the chromosphere below them. When a filament rotates to the edge of the sun, it is seen in profile against the blackness of space and becomes a prominence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlage:\u003c\/strong\u003e Bright, blotchy regions that often surround sunspots, indicating areas of intense magnetic activity. They are hotter and denser than the surrounding chromosphere and serve as clear markers for active regions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive Regions:\u003c\/strong\u003e Complex zones where sunspots, plage, and filaments are concentrated. These are the sources of solar flares and other energetic events.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is important to note that granulation, the mottled pattern of convective cells, is a feature of the photosphere (white light) and is not visible in H-alpha.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eF\/15-F\/30 Native Compatibility \u0026amp; 67mm Backfocus\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark's optical design contains no integrated barlow or focusing elements; it is a pure filter assembly. This requires it to be fed a highly parallel beam of light, which is achieved with telescopes that have a native focal ratio of F\/15 to F\/30. This suits long focus refractors and Maksutovs. For Schmidt-Cassegrains, an off-axis Energy Rejection Filter (ERF) reduces the aperture, which raises the focal ratio from the native focal ratio to the preferred ~F\/30 beam.\u003c\/p\u003e\n\u003cp\u003eBecause the filter assembly is placed between the \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e and the eyepiece, it adds significant length to the optical path. You will need to move the \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e inward by 67mm to reach focus compared to a standard eyepiece. When using the included 2° wedge adapter for an off-axis ERF on an SCT, this backfocus requirement increases to 99mm. You will need to dial the focus knob quite significantly.\u003c\/p\u003e\n\u003cp\u003eFor faster refractors, Daystar offers optional \u003cstrong\u003e2.8x and 4.3x telecentric barlows\u003c\/strong\u003e (sold separately): the 4.3x for F\/5 to F\/9 refractors, showing the full disk at about 480mm focal length or shorter, and the 2.8x for F\/5 to F\/14, showing the full disk at about 720mm or shorter with a brighter, lower power image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChromosphere vs. Prominence: A Choice of 2 Solar Targets\u003c\/h3\u003e\n\u003cp\u003eDaystar does not specify an FWHM for its Quark filters. Prominence units are generally 0.6Å or above and Chromosphere units generally 0.5Å or below, so you choose by what you want to see.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model (This Product):\u003c\/strong\u003e With a bandpass generally \u003cstrong\u003e0.5Å or below\u003c\/strong\u003e, this model favours contrast on surface detail such as filaments, plage and active regions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model:\u003c\/strong\u003e This variant has a slightly wider bandpass (generally 0.6Å or above). This favours prominences, the loops and eruptions of plasma seen at the sun's limb, with softer surface detail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe choice between the two models is a trade-off. The Chromosphere model's narrower bandpass can make prominences appear dimmer, while the Prominence model's wider bandpass reduces contrast on surface features. Your primary observing interest should guide your decision.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFull Disk Views Under 1800mm Focal Length\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark is compatible with a wide range of telescopes, provided the focal ratio and safety requirements are met. It has no aperture limit, meaning it can be used on large-aperture refractors for high-magnification views of specific solar features. However, whether you can see the entire solar disk in one view depends on your telescope's focal length.\u003c\/p\u003e\n\u003cp\u003eIt passes the full solar disk for focal lengths under about 1800mm, with a low power eyepiece such as a 32mm or 40mm Plössl. Longer focal lengths give higher magnification views of sections of the sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEnergy Rejection Filters\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark sits behind the telescope, so sunlight enters the telescope before it reaches the filter. To prevent damage, Daystar strongly recommends using an Energy Rejection Filter (ERF), and for apertures over 80mm suggests one. ERFs reduce the heat load on the filter assembly by absorbing or reflecting UV and\/or IR light.\u003c\/p\u003e\n\u003cp\u003eDaystar's guidance by telescope type:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchmidt-Cassegrains:\u003c\/strong\u003e SCTs must not be used in full aperture with this unit. They typically employ a front mounted ERF with an off-axis opening of reduced aperture, and the included \u003cstrong\u003e2° wedge adapter\u003c\/strong\u003e must be installed between the telescope and Quark, with its set screw on the same side as the ERF hole, or the transmission will be off-band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaksutovs:\u003c\/strong\u003e Maksutov telescopes usually use a full aperture colored glass ERF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefractors:\u003c\/strong\u003e For brief observing sessions with less than 80mm of aperture when not using a tracking mount, be alert for any rise in temperature of your telescope, diagonal or Quark. For telescopes under approximately 150mm of aperture, a screw in \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e can be employed in front of the diagonal. For highest safety, a red or yellow glass front mount ERF should be used.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTracking:\u003c\/strong\u003e All dedicated solar tracking applications should employ energy rejection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Never use a \u003ca href=\"\/en-int\/collections\/herschel-wedges\"\u003eHerschel wedge\u003c\/a\u003e or a standard \u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003ewhite-light solar filter\u003c\/a\u003e with the Quark. Those filters block 99.999% of all light, including the desired H alpha light.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e±0.5Å Wing Shift and 5-15 Minute Settling Time\u003c\/h3\u003e\n\u003cp\u003eThe heart of the Quark is a Fabry-Perot etalon that must be precisely heated to pass the 6562.8 Å H-alpha wavelength. When you first power on the filter, the LED indicator will turn yellow, signifying it is warming up. This process takes approximately 5-15 minutes, after which the light turns green, indicating the filter is on-band and ready for observation.\u003c\/p\u003e\n\u003cp\u003eA tuning knob allows you to \"wing shift\" the filter's center wavelength by up to ±0.5Å from the central H-alpha line, with detents at every 0.1Å. This lets you restore contrast if the image lacks it and observe Doppler-shifted features. Solar features moving towards you are shifted towards the blue end of the spectrum, while features moving away are shifted red. By turning the knob, you can enhance the contrast of these specific moving structures.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClockwise Turn:\u003c\/strong\u003e Shifts toward red. Enhances features moving away from you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounter-Clockwise Turn:\u003c\/strong\u003e Shifts toward blue. Enhances features moving towards you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter each adjustment of the tuning knob, the filter needs 5-10 minutes to re-stabilize at its new temperature before the change becomes effective.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e5V, 1.5A USB Power for All-Day Operation\u003c\/h3\u003e\n\u003cp\u003eThe Quark's precision heating system is powered by a standard female Micro-B USB port, requiring a 5V source capable of delivering at least 1.5A. Daystar includes a 90-240VAC wall adapter with interchangeable plugs for US, UK, European, and Australian outlets.\u003c\/p\u003e\n\u003cp\u003eAway from AC power, use Daystar's optional 8-hour battery pack or another USB source rated for at least 1.5 amps at 5 volts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Do not power the filter from a computer or cell phone charger, as computer USB ports and cell phone chargers do not normally support this much power. A computer port makes the heater reduce its current draw, so the LED may stay yellow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 1.25\" Format and Eyepiece Selection\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark is designed for maximum compatibility, featuring a standard 1.25\" male snout on the telescope side and a 1.25\" female drawtube on the eyepiece side. The \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003eeyepiece holder\u003c\/a\u003e has a brass compression ring to protect your eyepiece, and the sun-side snout has a safety indent.\u003c\/p\u003e\n\u003cp\u003eEyepiece choice is critical for good performance. At F\/15-30 a high powered eyepiece can exceed Dawes' limit, giving a fuzzy disk without the ability to focus well, and Naglers, zooms, Radians and other fast eyepieces typically perform very badly.\u003c\/p\u003e\n\u003cp\u003ePlössl eyepieces of 25mm, 32mm and 40mm are recommended, and best results come with 32mm or greater. In testing, fully multicoated eyepieces and blackened optical edges gave less internal scattering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eWhy Only 1 in 4 Pixels See H-Alpha on a Color Sensor\u003c\/h3\u003e\n\u003cp\u003eWhile visual observation is the Quark's primary strength, it is also a capable imaging tool. For the best results, use a monochrome CCD or CMOS camera. Color sensors are less efficient in H-alpha.\u003c\/p\u003e\n\u003cp\u003eA color camera sensor is covered by a Bayer matrix, a mosaic of red, green, and blue filters. Only the pixels under the red filters can detect the H-alpha light; the other 75% of the pixels (covered in green and blue) are essentially blind to it. This means a color camera has only 1\/4 the sensitivity and 1\/2 the resolution of a monochrome camera of the same size. Furthermore, many consumer DSLR cameras have an internal IR-cut filter that severely attenuates H-alpha light, reducing sensitivity even further.\u003c\/p\u003e\n\u003cp\u003eAnother common issue in H-alpha imaging is the appearance of interference patterns, or \"Newton's Rings.\" The sensor and its cover slip form a small interferometer, and the sensor must be tilted to a minor degree to prevent the pattern. Daystar offers an optional accessory (MG-0408) to adjust the light angle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 5-Year Warranty and Twist-Case Storage\u003c\/h3\u003e\n\u003cp\u003eDaystar provides a 5-year warranty for the Combo Quark, ensuring it is free from defects in materials and workmanship. Components considered wear items, such as blockers and trimmers, are covered on a pro-rated basis over the five-year term.\u003c\/p\u003e\n\u003cp\u003eProper care and storage are essential for maximizing the life of the filter. The Quark ships in a durable Twist-Case for safe, dust-free storage. When not in use, store the filter with its end caps on in a climate-controlled environment; this extends optical filter life expectancy up to 2-3 times. Avoid touching any optical surfaces. A few specks of dust can be gently blown off with a squeeze bulb (never compressed air). Fingerprints and smudges must be cleaned off; the preferred method is factory cleaning at Daystar's laboratory. Never disassemble the filter assembly, as internal components are pressurized and opening it will damage them and void the warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Daystar Combo Quark Chromosphere and Prominence models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eChromosphere model\u003c\/strong\u003e (this product) has a narrower bandpass (generally 0.5Å or below) and is optimized for viewing high-contrast details on the sun's surface, like filaments and plages. The \u003cstrong\u003eProminence model\u003c\/strong\u003e has a slightly wider bandpass to better capture faint, eruptive details on the sun's limb (edge).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy must I use an Energy Rejection Filter (ERF) with the Combo Quark on my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSCTs must not be used in full aperture with this unit. An SCT typically uses a front mounted ERF with an off-axis opening of reduced aperture: it reduces the heat load and raises the focal ratio to the preferred ~F\/30 beam. The included wedge adapter compensates for the off-axis angle. Maksutovs usually use a full aperture colored glass ERF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Combo Quark Chromosphere on my f\/7 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot directly. The Combo Quark is designed for the slow F\/15 to F\/30 light cones of long-focus telescopes. To use it on a faster f\/7 refractor, you would need one of Daystar's optional telecentric barlows (the \u003cstrong\u003e2.8x\u003c\/strong\u003e or \u003cstrong\u003e4.3x\u003c\/strong\u003e) to modify your telescope's focal ratio to the correct range. Without a barlow, the filter will not perform correctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Combo Quark in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter is powered via a standard Micro-B USB port and requires a \u003cstrong\u003e5V, 1.5A\u003c\/strong\u003e source. In the field, use Daystar's optional 8-hour battery pack or another USB source rated for at least 1.5 amps at 5 volts. Computer USB ports and cell phone chargers do not normally support this much power. The included wall adapter also comes with international plugs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see a full disk of the sun with the Combo Quark in my 11\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Full disk viewing is possible on telescopes with focal lengths under approximately \u003cstrong\u003e1800mm\u003c\/strong\u003e. A typical 11\" SCT has a focal length of 2800mm, which is too long to frame the entire sun. With this combination, you will get a high-magnification view of a smaller section of the sun, which is excellent for studying details within an active region.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Combo Quark Chromosphere take 5-15 minutes to warm up?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter's internal Fabry-Perot etalon must be heated to a precise temperature to be tuned exactly to the 6562.8 Å Hydrogen-Alpha wavelength. The 5-15 minute warm-up time allows the internal electronics to heat the etalon and stabilize its temperature. The LED indicator will be yellow during this time and turn green when it's ready.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the included 2° wedge adapter do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2° wedge adapter is specifically for use with SCTs and Maksutovs that are using an off-axis ERF. Because the light from an off-axis ERF enters the telescope at a slight angle, the wedge adapter corrects this angle before the light enters the Quark. This ensures the filter performs on-band. The adapter's set screw must be aligned with the opening on the ERF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat eyepieces work best with the Daystar Combo Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSimple, high-quality Plössl eyepieces with long focal lengths (\u003cstrong\u003e25mm to 40mm\u003c\/strong\u003e) are recommended. Naglers, zooms, Radians and other fast eyepieces typically perform very badly, and at F\/15-30 an eyepiece of 32mm or greater avoids exceeding Dawes' limit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy doesn't Daystar specify an exact bandpass for the Combo Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FWHM is not specified: Chromosphere units are generally \u003cstrong\u003e0.5Å or below\u003c\/strong\u003e and Prominence units generally 0.6Å or above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does a red light on my Daystar Combo Quark mean?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eRed usually means the Quark is not receiving enough voltage: recharge the battery if on battery, and use the supplied wall adapter, as cell phone chargers and PC USB ports do not have enough current capability (the filter needs \u003cstrong\u003e1.5A\u003c\/strong\u003e). If changing the power source does not clear it, return the Quark to Daystar for inspection and repair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Combo Quark safe to use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFollow the manual. An Energy Rejection Filter is strongly recommended, SCTs must not be used in full aperture with this unit, and the filter must not be disassembled: the blocking element is separated from the etalon and the complete assembly must be used together for safe viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eAll-in-one Hydrogen-Alpha filter: Fabry-Perot etalon and blocking filter (no barlow or focusing elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eChromosphere, SE (Standard Edition) uniformity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003eNot specified; Chromosphere units generally 0.5Å or below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e6562.8 Å (656.28 nm), Hydrogen-Alpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003ewing shift ±0.5Å with detents every 0.1Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eF\/15 to F\/30 refractors at full aperture; SCTs and Maksutovs only with an off-axis Energy Rejection Filter (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackfocus\u003c\/td\u003e\n\u003ctd\u003eRequires refocusing 67mm rearwards, 99mm with the wedge adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Barlows\u003c\/td\u003e\n\u003ctd\u003eDaystar Combo Quark 2.8x and 4.3x telecentric barlows (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e19mm clear etalon aperture (manual); 21mm clear filter aperture (Daystar store)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-Band Blocking\u003c\/td\u003e\n\u003ctd\u003eX-ray to 2 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Disk\u003c\/td\u003e\n\u003ctd\u003ePasses the full solar disk for focal lengths under about 1800mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Limit\u003c\/td\u003e\n\u003ctd\u003eNone; an Energy Rejection Filter is suggested for apertures over 80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSun Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" male snout with safety indent; 2° off-axis 1.25\" snout (wedge) adapter included for off-axis ERFs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with brass compression ring; optional 2\" accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 1.5A, female micro-B connector (required for operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC with US, UK, Euro and Australian plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Battery\u003c\/td\u003e\n\u003ctd\u003e8-hour battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eYellow while settling, green when ready and on band, red for a fault such as low voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSettling Time\u003c\/td\u003e\n\u003ctd\u003eApproximately 5-15 minutes after power-up or a wing shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e40-100°F ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e55mm diameter x 71mm x 91mm long\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eTwist-Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (blockers and trimmers pro-rated as wear items)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCombo Quark filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2° off-axis 1.25\" snout (wedge) adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePower supply (90-240VAC wall adapter with US, UK, Euro and Australian plugs)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Combo_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967455064349,"sku":"DAY-DSZCC","price":1813.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Combo-Quark-1__87747.1597187047.1280.1280.jpg?v=1684342395"},{"product_id":"daystar-combo-quark-prominence-solar-filter","title":"Daystar Combo Quark Prominence Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAll-in-one Hydrogen-Alpha solar filter\u003c\/li\u003e\n\u003cli\u003eProminence Model optimized for limb detail\u003c\/li\u003e\n\u003cli\u003eCompatible with F\/15 to F\/30 refractors and off-axis SCTs\/Maks\u003c\/li\u003e\n\u003cli\u003eRequires 67mm of rearward focus travel\u003c\/li\u003e\n\u003cli\u003ePrecision wing shift tuning of ±0.5Å\u003c\/li\u003e\n\u003cli\u003ePowered by standard 5V, 1.5A USB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Combo Quark Prominence Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Combo Quark Prominence \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003eSolar Filter\u003c\/a\u003e is an all-in-one hydrogen-alpha \"\u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e\" that converts long focal ratio telescopes into dedicated solar instruments. This Prominence model works at 6562.8 Å with a bandpass generally 0.6Å or above, and is powered from a 5V, 1.5A USB source. It suits F\/15 to F\/30 \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e in full aperture, and SCT or Mak telescopes used with an off axis ERF (not included); a 2° wedge adapter is included for that.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAn All-in-One H-Alpha Filter for F\/15-F\/30 Telescopes\u003c\/h3\u003e\n\u003cp\u003eDaystar's Combo Quark simplifies hydrogen-alpha solar observing by integrating a Fabry-Perot etalon, blocking filter, and adapters into a single, eyepiece-sized device. This self-contained design eliminates the complexity of stacking multiple components, so you can use a compatible nighttime telescope for solar viewing. Just insert the Combo Quark's 1.25\" snout into your \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e, connect the 5V USB power, and add an eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe filter is for slow focal ratios: F\/15 to F\/30 refractors in full aperture. \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrains\u003c\/a\u003e must not be used in full aperture with this unit; an off-axis Energy Rejection Filter (sold separately) reduces the aperture, raising the focal ratio to the preferred ~F\/30 beam. \u003ca href=\"\/en-int\/collections\/maksutov-cassegrain-telescopes\"\u003eMaksutovs\u003c\/a\u003e usually use a full aperture colored glass ERF.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eProminence Model: Viewing Eruptions at 6562.8 Å\u003c\/h3\u003e\n\u003cp\u003eThis version of the Combo Quark is the \"Prominence\" model, intended for features seen at the edge of the Sun. The filter is centered on the 6562.8 Å hydrogen-alpha line with a bandpass generally 0.6Å or above, which favours prominences at the limb: loops, arches and eruptions.\u003c\/p\u003e\n\u003cp\u003eWhile some surface detail will be visible, the primary strength of this model is limb detail. The trade-off is less surface contrast than the \"Chromosphere\" model; filaments are only visible in the Chromosphere version.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 0-Power Design Requiring 67mm of Backfocus\u003c\/h3\u003e\n\u003cp\u003eUnlike the original Quark, the Combo Quark contains no internal barlow or focusing elements. It is a true 0-power filter, which means it doesn't alter the telescope's focal length. This design choice is key to its compatibility with naturally long focal ratio instruments. It needs about 67mm of additional backfocus, or 99mm with the included wedge adapter for SCTs, so you will need to dial the focus knob quite significantly.\u003c\/p\u003e\n\u003cp\u003eFor faster refractors, Daystar offers optional 2.8x and 4.3x telecentric barlows for the Combo Quark: the 4.3x for F\/5 to F\/9, showing the full disk at about 480mm focal length or shorter, and the 2.8x for F\/5 to F\/14, showing the full disk at about 720mm or shorter. You unscrew the silver snout from the Combo Quark and screw on the barlow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eProminence vs. Chromosphere: A Choice Based on Observing Goals\u003c\/h3\u003e\n\u003cp\u003eThe Quark FWHM is not specified: Prominence units are generally 0.6Å or above and Chromosphere units generally 0.5Å or below, so you choose by what you want to see.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model (This unit):\u003c\/strong\u003e Features a wider bandpass (typically 0.6Å or greater). This favours prominences at the solar limb.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model:\u003c\/strong\u003e Features a narrower bandpass (typically 0.5Å or less). This favours surface contrast; filaments are only visible in the Chromosphere version.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCompatibility: F\/15-F\/30 Refractors and Off-Axis SCTs\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark is designed for a specific optical configuration. If light reaches the filter at an angle it causes wing shift, so the etalon needs slow F\/15 to F\/30 light.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefractors:\u003c\/strong\u003e Compatible at full aperture if the native focal ratio is between F\/15 and F\/30. For faster refractors, one of the optional Daystar 2.8x or 4.3x telecentric barlows is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSCTs:\u003c\/strong\u003e Must not be used in full aperture with this unit. An off-axis Energy Rejection Filter (ERF) reduces the aperture, raising the focal ratio to the preferred ~F\/30 beam, and the included 2° wedge adapter compensates for the off-axis angle; without it the transmission will be off-band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaksutovs:\u003c\/strong\u003e They usually use a full aperture colored glass ERF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Disk Viewing:\u003c\/strong\u003e It passes the full solar disk for focal lengths under about 1800mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolar Safety: Energy Rejection\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo not disassemble the filter: the blocking element is separated from the etalon and the complete assembly must be used together for safe viewing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Combo Quark sits behind the telescope, so sunlight enters the telescope first. To prevent damage, Daystar strongly recommends using an Energy Rejection Filter, and for apertures over 80mm suggests one. Its guidance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSCTs:\u003c\/strong\u003e Must not be used in full aperture with this unit; use a front mounted ERF with an off-axis opening of reduced aperture, plus the included wedge adapter with its set screw on the same side as the ERF hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaksutovs:\u003c\/strong\u003e Usually use a full aperture colored glass ERF.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefractors with less than 80mm of aperture:\u003c\/strong\u003e For brief observing sessions when not using a tracking mount, be alert for any rise in temperature of your telescope, diagonal or Quark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefractors:\u003c\/strong\u003e For telescopes under approximately 150mm of aperture, a screw in \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e can be employed in front of the diagonal. For highest safety, a red or yellow glass front mount ERF should be used.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTracking:\u003c\/strong\u003e All dedicated solar tracking applications should employ energy rejection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHerschel wedges and white light filters\u003c\/strong\u003e cannot be used with the Quark: they block 99.999% of all light, including the desired H alpha light.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Tuning: ±0.5Å Wing Shift for Doppler Effects\u003c\/h3\u003e\n\u003cp\u003eThe etalon is heated to approximately 100-150°F to control the wavelength passed. A tuning knob lets you shift the center wavelength by up to ±0.5Å from the central line. The knob has detents at every 0.1Å, giving you fine control over the passband.\u003c\/p\u003e\n\u003cp\u003eTuning helps if the image lacks contrast, and wing shift also shows Doppler-shifted features. Solar features moving towards you are blue-shifted, while those moving away are red-shifted. By tuning slightly off-band into the \"blue wing\" (counter-clockwise) or \"red wing\" (clockwise), you can bring out features moving toward or away from you. After every adjustment the filter must settle in temperature for approximately 5-10 minutes before the change becomes effective.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e5V, 1.5A USB Power: Operation and LED Indicators\u003c\/h3\u003e\n\u003cp\u003eThe filter is powered through a female Micro-B USB port and power is required for proper operation. Other USB sources must be rated for at least 1.5 amps at 5 volts; computer USB ports and cell phone chargers do not normally support this much power. An optional 8-hour battery pack is available. The package includes a 90-240VAC universal wall adapter with plugs for the US, UK, Europe, and Australia.\u003c\/p\u003e\n\u003cp\u003eA multi-color LED indicator on the housing provides status at a glance:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYellow:\u003c\/strong\u003e Temperature settling, approximately 5-15 minutes after power up or a change of wing shift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen:\u003c\/strong\u003e The filter has reached its target temperature and is on-band and ready for observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed:\u003c\/strong\u003e A fault such as low voltage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVisual Observing: 1.25\" Snouts, Diagonals, and Eyepiece Choice\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark is designed for visual use with standard 1.25\" accessories. The sun-side has a 1.25\" male snout with a safety indent, and the eyepiece side a 1.25\" female drawtube with a brass compression ring to protect your eyepiece.\u003c\/p\u003e\n\u003cp\u003eBecause the filter operates at a slow focal ratio (F\/15-F\/30), eyepiece selection is important. A high powered eyepiece can exceed Dawes' limit, giving a fuzzy disk without the ability to focus well; Plössl eyepieces of 25mm, 32mm and 40mm are recommended, with best results at 32mm or greater. A viewing hood or cloth over your head is also recommended to limit stray light, so fainter prominences and more surface detail can be seen.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eImaging the Sun: Why a 12-bit Monochrome CCD is Recommended\u003c\/h3\u003e\n\u003cp\u003eWhile designed for visual use, the Combo Quark is also a capable tool for solar imaging. Monochrome imaging is recommended. On a color sensor only 1 in 4 pixels detect red light, so it offers 1\/4 the sensitivity and 1\/2 the resolution of a monochrome chip. A monochrome sensor uses every pixel, maximizing detail and signal.\u003c\/p\u003e\n\u003cp\u003eSolar features have a wide dynamic range, from bright plages to faint prominences. A camera with a 12-bit or 16-bit analog-to-digital converter (ADC) can capture this full range in a single exposure. An 8-bit camera will often require separate, bracketed exposures for surface and prominence detail that must be combined later in processing. Because seeing cells move quickly, frame rates shorter than 1\/10 second work better; try about 1\/15 to 1\/100 second for prominences with a webcam style camera, and about 1\/300 to 1\/500 second for surface detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCare, Storage, and a 5-Year Warranty\u003c\/h3\u003e\n\u003cp\u003eThe Combo Quark is a precision optical instrument that requires proper care. When not in use, it should be stored with its end caps on in the included Twist-Case in a climate-controlled environment to maximize the life of the filter elements. A few specks of dust may be blown off with a squeeze bulb (never compressed air), and the preferred cleaning method for fingerprints and smudges is factory cleaning at Daystar's laboratory. Climate-controlled storage extends optical filter life expectancy up to 2-3 times. Do not disassemble the unit, as internal components are pressurized and opening the housing will void the warranty.\u003c\/p\u003e\n\u003cp\u003eDaystar provides a 5-year warranty covering defects in materials and workmanship. Blockers and trimmers are considered wear items and are covered on a pro-rated basis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the Daystar Combo Quark Prominence filter with my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSCTs must not be used in full aperture with this unit, so first place a red or yellow glass off-axis Energy Rejection Filter (ERF, sold separately) over the front of your telescope. Once the ERF is secure, insert the included 2° off-axis wedge adapter into your \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e, ensuring its set screw is oriented on the same side as the hole in the ERF. Then, insert the Combo Quark into the wedge adapter, followed by a long focal length eyepiece (e.g., 32mm Plössl) into the Quark. The off-axis ERF raises your SCT's focal ratio to the preferred ~F\/30 beam.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I expect to see with the Daystar Combo Quark Prominence and a long f\/15 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn f\/15 refractor is within the Combo Quark's F\/15 to F\/30 range. The Prominence model favours the limb: prominences, loops and eruptions. Surface detail is less contrasty than with the Chromosphere model, and filaments are only visible in the Chromosphere version.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Daystar Combo Quark Prominence and Chromosphere models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two models are qualified for different solar features:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model (this one):\u003c\/strong\u003e Optimized for high-contrast views of features on the Sun's edge (limb), such as prominences and eruptions. Its bandpass is generally 0.6Å or wider.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model:\u003c\/strong\u003e Optimized for viewing details on the Sun's surface (disk), such as filaments and plages. Its bandpass is generally 0.5Å or narrower.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an Energy Rejection Filter (ERF) for the Combo Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDaystar strongly recommends one to prevent damage, and for apertures over 80mm suggests one. SCTs must not be used in full aperture with this unit and use an off-axis ERF; Maksutovs usually use a full aperture colored glass ERF. For refractors under approximately 150mm a UV\/IR cut filter before the diagonal can be employed, and for highest safety a red or yellow glass front mount ERF should be used. All dedicated solar tracking applications should employ energy rejection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Daystar Combo Quark Prominence need power?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Combo Quark uses a Fabry-Perot etalon that must be precisely heated to a specific temperature (approximately 100-150°F) to transmit the exact 6562.8 Å hydrogen-alpha wavelength. The 5V, 1.5A USB power runs the heater that holds this temperature, which keeps the filter on band.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I see the full disk of the Sun with the Daystar Combo Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is possible in some telescopes. It passes the full solar disk for focal lengths under about 1800mm. You will also need a long focal length eyepiece (e.g., 40mm Plössl) to frame the entire disk in the view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Combo Quark need so much focuser travel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark requires about 67mm of additional backfocus, or 99mm with the wedge adapter, so you will need to dial the focus knob quite significantly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat eyepieces work best with the Daystar Combo Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePlössl eyepieces of 25mm, 32mm and 40mm are recommended. At F\/15-30 a high powered eyepiece can exceed Dawes' limit, so an eyepiece of 32mm or greater gives the best results, and Naglers, zooms, Radians and other fast eyepieces typically perform very badly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the different LED colors mean on the Combo Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe LED indicates the filter's thermal status:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYellow:\u003c\/strong\u003e Warming up or settling to a new tuning point. Wait 5-15 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen:\u003c\/strong\u003e Ready. The filter is at the correct temperature and on-band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed:\u003c\/strong\u003e This usually means the Quark is not receiving enough voltage; use the supplied wall adapter, and if that does not clear it, return the Quark for inspection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Combo Quark for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. For the best results, use a monochrome CMOS or CCD camera to maximize sensitivity and resolution at the red H-alpha wavelength. A camera with 12-bit or 16-bit depth is recommended to capture the wide dynamic range between the bright solar surface and faint prominences. Use frame rates shorter than 1\/10 second.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy doesn't the Daystar Combo Quark have a specific bandpass rating?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FWHM is not specified. Prominence units are generally 0.6Å or above and Chromosphere units generally 0.5Å or below.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eAll-in-one Hydrogen-Alpha filter: Fabry-Perot etalon and blocking filter (no barlow or focusing elements)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eProminence, SE (Standard Edition) uniformity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003eNot specified; Prominence units generally 0.6Å or above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e6562.8 Å (656.28 nm), Hydrogen-Alpha\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003ewing shift ±0.5Å with detents every 0.1Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eF\/15 to F\/30 refractors at full aperture; SCTs and Maksutovs only with an off-axis Energy Rejection Filter (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackfocus\u003c\/td\u003e\n\u003ctd\u003eRequires refocusing 67mm rearwards, 99mm with the wedge adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Barlows\u003c\/td\u003e\n\u003ctd\u003eDaystar Combo Quark 2.8x and 4.3x telecentric barlows (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e19mm clear etalon aperture (manual); 21mm clear filter aperture (Daystar store)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-Band Blocking\u003c\/td\u003e\n\u003ctd\u003eX-ray to 2 microns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull Disk\u003c\/td\u003e\n\u003ctd\u003ePasses the full solar disk for focal lengths under about 1800mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Limit\u003c\/td\u003e\n\u003ctd\u003eNone; an Energy Rejection Filter is suggested for apertures over 80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSun Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" male snout with safety indent; 2° off-axis 1.25\" snout (wedge) adapter included for off-axis ERFs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Side\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with brass compression ring; optional 2\" accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 1.5A, female micro-B connector (required for operation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC with US, UK, Euro and Australian plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Battery\u003c\/td\u003e\n\u003ctd\u003e8-hour battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicator\u003c\/td\u003e\n\u003ctd\u003eYellow while settling, green when ready and on band, red for a fault such as low voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSettling Time\u003c\/td\u003e\n\u003ctd\u003eApproximately 5-15 minutes after power-up or a wing shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e40-100°F ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e55mm diameter x 71mm x 91mm long\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eTwist-Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (blockers and trimmers pro-rated as wear items)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCombo Quark filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2° off-axis 1.25\" snout (wedge) adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePower supply (90-240VAC wall adapter with US, UK, Euro and Australian plugs)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Combo_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967455097117,"sku":"DAY-DSZCP","price":1813.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Combo-Quark-1__65848.1597187012.1280.1280.jpg?v=1684342398"},{"product_id":"daystar-camera-quark-chromosphere-solar-filter","title":"Daystar Camera Quark Chromosphere Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTransforms Canon or Nikon SLR lenses into a Hydrogen-Alpha solar telescope\u003c\/li\u003e\n\u003cli\u003eIntegrated, H-Alpha optimized telecentric Barlow lens\u003c\/li\u003e\n\u003cli\u003eUSB-powered, heated Fabry-Perot etalon for thermal stability\u003c\/li\u003e\n\u003cli\u003eSupports both camera and eyepiece-based observation\u003c\/li\u003e\n\u003cli\u003eIncludes reversible mounting foot with tripod threads and Vixen-style dovetail\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Camera Quark Chromosphere Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Camera Quark Chromosphere \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003eSolar Filter\u003c\/a\u003e converts your standard \u003ca href=\"\/en-int\/collections\/camera-lenses-and-adapters\"\u003etelephoto lens\u003c\/a\u003e into a dedicated Hydrogen-alpha solar instrument, unlocking detailed views of the sun's dynamic chromosphere. This all-in-one adapter houses a precision DayStar Fabry-Perot etalon and an integrated, H-alpha optimized telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003eBarlow lens\u003c\/a\u003e. Simply attach the Camera Quark between your existing Canon or Nikon lens and your camera body to begin exploring solar prominences, filaments, and plage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eH-alpha Conversion: Turn Your SLR Lens into a Solar Telescope\u003c\/h3\u003e\n\u003cp\u003eThe Camera Quark is an elegant solution for photographers wanting to enter the world of H-alpha solar imaging without investing in a new, dedicated telescope. The patent-pending design combines the necessary etalon and a telecentric Barlow in a single, lightweight device that mounts directly to your lens. This approach allows you to use the zoom feature of your camera lens to seamlessly shift from wide-field views of the full solar disc to high-magnification close-ups of active regions, all without changing your optical setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUSB-Powered Etalon: Stable, On-the-Go Solar Viewing\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Camera Quark is a solid Fabry-Perot etalon that must be heated to a precise temperature to remain on the critical 656.28nm H-alpha line. The unit is powered by a common USB power source, allowing you to run it all day from a wall adapter or a small, portable battery pack for field use. An LED indicator light clearly shows the filter's status, changing from warming to ready, so you know exactly when your system is thermally stable and optimized for the highest contrast views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated Mounting \u0026amp; Adapters: Connect to Cameras, Eyepieces, and Mounts\u003c\/h3\u003e\n\u003cp\u003eDesigned for maximum flexibility, the Camera Quark attaches securely with a bayonet mount for either Canon or Nikon lenses. It includes the corresponding camera body adapter, but its utility extends beyond imaging. An included drawtube adapter allows you to insert a standard 1.25\" \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e for direct visual observation. For stable mounting, a reversible combination lens foot provides both standard tripod holes and a Vixen-style dovetail, enabling you to mount your entire lens-and-camera setup on a simple photo tripod or a more robust astronomical mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eManual Operation: Key Considerations for Modern Lenses\u003c\/h3\u003e\n\u003cp\u003eThe Camera Quark does not feature electronic pass-through, which is a critical consideration for use with modern lenses. You will need to operate your lens in full manual mode, controlling both focus and aperture mechanically. Lenses that require electronic signals from the camera body for these functions may not be compatible. For safety, use an Energy Rejection Filter on instruments of 80mm aperture or more, or when tracking the Sun for long periods, such as a full aperture red or yellow glass ERF or screw-on filter mounted in front of the lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCamera Quark vs. Dedicated Solar Telescopes: Portability vs. Aperture\u003c\/h3\u003e\n\u003cp\u003eA dedicated \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescope\u003c\/a\u003e offers an all-in-one, optimized system, often with a larger aperture and internal ERF, but at the cost of being a single-purpose instrument. The Camera Quark's primary advantage is its portability and adaptability. It allows you to leverage the high-quality optics you already own, creating a compact, travel-friendly solar imaging rig that fits in a camera bag. While a dedicated scope might resolve finer detail due to a larger objective, the Camera Quark provides an accessible and versatile entry point for capturing stunning H-alpha images of the sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Camera Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Camera Quark requires a \u003cstrong\u003eUSB power source (5V, 1.5A)\u003c\/strong\u003e to heat its internal etalon. You can use the included wall adapter or a portable USB battery pack for use in the field. An LED indicator lets you know when the filter is warming up and when it has reached its stable operating temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Camera Quark visually with an eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Camera Quark includes a \u003cstrong\u003e1.25\" drawtube adapter\u003c\/strong\u003e that allows you to insert a standard astronomy eyepiece. This lets you use your camera lens and the Quark as a complete, portable visual solar telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Daystar Camera Quark work with my zoom lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, and this is one of its most powerful features. Using a zoom lens allows you to change your field of view and magnification without altering the setup. You can frame the entire solar disk at a wide setting and then zoom in to study a specific sunspot group or prominence in high detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an extra filter for my 100-400mm lens with the Daystar Camera Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Use an Energy Rejection Filter on instruments of 80mm aperture or more, or when tracking the Sun for long periods, such as a full aperture red or yellow glass ERF or screw-on filter mounted in front of the lens. This filter reduces the heat load on the internal components of the Quark and your lens, ensuring safe operation and protecting your equipment. An ERF is not included and must be purchased separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill my camera's autofocus work through the Daystar Camera Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Daystar Camera Quark has \u003cstrong\u003eno electronic pass-through\u003c\/strong\u003e. This means no communication can occur between your camera body and the lens. You must set your lens to manual focus and, if applicable, manually set the aperture ring. Lenses that rely solely on electronic control for focus or aperture will not work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I image both solar prominences and surface detail with the Camera Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eCapturing both requires different exposure settings. First, achieve sharp manual focus on the limb of the sun using your camera's live view. For \u003cstrong\u003eprominences\u003c\/strong\u003e, use a higher exposure setting to capture the faint structures extending into space. For surface detail like filaments and plage, you will need a much shorter exposure. It is standard practice to take separate videos or image sets for each and combine them during processing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003eFor Canon, For Nikon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e656.28nm (Hydrogen-Alpha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear aperture\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003e±0.5Å wing shift in 0.1Å steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCamera Quark filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCanon or Nikon style camera body adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eReversible lens foot with 1\/4-20 tripod holes and Vixen style dovetail\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwo extension (focal extender) rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" drawtube adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e90-240VAC wall adapter with international plugs\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Camera_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"For Canon","offer_id":44967455129885,"sku":"DAY-DSZTCC","price":2093.0,"currency_code":"CAD","in_stock":true},{"title":"For Nikon","offer_id":44967455162653,"sku":"DAY-DSZTNC","price":2093.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Camera-Quark-1__96901.1597186809.1280.1280.jpg?v=1684342404"},{"product_id":"daystar-camera-quark-prominence-solar-filter","title":"Daystar Camera Quark Prominence Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTransforms Canon or Nikon SLR lenses into a Hydrogen-Alpha solar telescope\u003c\/li\u003e\n\u003cli\u003eOptimized for high-contrast views of solar prominences\u003c\/li\u003e\n\u003cli\u003eInternal Fabry-Perot etalon with USB-powered heating\u003c\/li\u003e\n\u003cli\u003eIntegrated telecentric lens system ensures a flat, evenly illuminated field\u003c\/li\u003e\n\u003cli\u003eAccepts 1.25\" eyepieces or camera bodies for flexible viewing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Camera Quark Prominence Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Camera Quark Prominence \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003eSolar Filter\u003c\/a\u003e transforms your standard Canon or Nikon SLR lens into a dedicated Hydrogen-alpha \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescope\u003c\/a\u003e. This all-in-one unit houses a precisely tuned Fabry-Perot etalon and an optimized telecentric lens system, placing high-contrast views of solar prominences within reach of your existing camera gear. Simply attach the Camera Quark between your lens and camera body to begin exploring the dynamic, ever-changing limb of the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eH-Alpha Solar Imaging with Your Canon or Nikon Lenses\u003c\/h3\u003e\n\u003cp\u003eThe Camera Quark leverages the investment you've already made in your photographic equipment. By attaching to the bayonet mount of your telephoto or zoom lens, it provides a direct, secure optical path for H-alpha observation. This design allows you to use your lens's zoom capabilities to go from wide, full-disk views to high-magnification close-ups of specific active regions without changing your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated Telecentric Optics for a Flat H-Alpha Field\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Camera Quark is a custom, integrated telecentric lens system. This is not a simple \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003eBarlow lens\u003c\/a\u003e; it is an optical component specifically designed to work with the internal etalon, ensuring the light rays entering the filter are parallel across the entire field. The result is superior field flatness and even illumination, eliminating the off-axis artifacts that can compromise H-alpha viewing in less-optimized systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUSB Power and Versatile Mounting for Field Operations\u003c\/h3\u003e\n\u003cp\u003eDesigned for portability, the Camera Quark is powered by a standard USB connection, allowing it to run all day from a small, palm-sized battery pack or a USB power source rated for more than 1.5A (2 amp rated supplies and cables are recommended). For secure attachment, it includes a reversible combination mounting foot. This foot features standard tripod threads for use with photographic tripods and a Vixen-style dovetail for a solid connection to any astronomical mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCamera Quark Prominence vs. Chromosphere: Choosing Your View\u003c\/h3\u003e\n\u003cp\u003eDaystar offers two versions of the Camera Quark, tuned for different solar features. Understanding the distinction is key to selecting the right tool for your observing goals.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model Advantage:\u003c\/strong\u003e The Chromosphere version uses a narrower bandpass. This increases contrast on the Sun's turbulent surface, making it the superior choice for resolving fine details in plages and filaments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model (This Model):\u003c\/strong\u003e The Prominence version has a slightly wider bandpass. This makes the faint, delicate structures of prominences appear brighter and more distinct against the black background of space, delivering the most dramatic views of solar ejections and loops on the Sun's limb.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eManual Control: Important Lens Compatibility Notes\u003c\/h3\u003e\n\u003cp\u003eThe Camera Quark is a fully manual device that does not electronically communicate with your lens or camera. You must be able to manually set your lens's focus to infinity and control its aperture. Lenses that require electronic control for these functions (\"focus-by-wire\") may not be compatible.\u003c\/p\u003e\n\u003cp\u003eAdditionally, for lenses of 80mm aperture or more, or when tracking the Sun for long periods, use a front-mounted red, orange, or yellow colored glass filter to act as an energy rejection filter (ERF). This reduces the heat load on the internal etalon, ensuring stable and safe operation during extended viewing sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Camera Quark in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eDaystar Camera Quark\u003c\/strong\u003e is powered via a standard USB port. You can use a portable USB battery pack rated for more than 1.5A (2 amp rated supplies and cables are recommended), making it easy to power during a full day of solar observing away from AC outlets. Do not power it from a computer or cell phone charger.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use an eyepiece with the Daystar Camera Quark instead of a DSLR?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eCamera Quark\u003c\/strong\u003e includes an adapter that allows you to insert a standard 1.25\" \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e. This lets you use your SLR lens and Quark combination as a visual Hydrogen-alpha telescope, not just an imaging system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between the Camera Quark Prominence and Chromosphere models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two models are tuned for different features. The \u003cstrong\u003eProminence model (this one)\u003c\/strong\u003e has a slightly wider bandpass, which makes faint prominences on the solar limb appear brighter and with higher contrast. The \u003cstrong\u003eChromosphere model\u003c\/strong\u003e has a narrower bandpass, which is better for revealing fine surface details like filaments and plages against the bright solar disk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an additional filter for my lens when using the Camera Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor lenses of 80mm aperture or more, or when tracking the Sun for long periods, fit a full aperture red or yellow glass ERF or a screw-on colored glass filter (red, orange or yellow) on the front of your lens. This acts as an Energy Rejection Filter (ERF), reflecting excess heat and light before it enters the lens, which protects the internal Quark components and improves thermal stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the Camera Quark with a 300mm telephoto lens to frame a total solar eclipse?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 300mm lens with the \u003cstrong\u003eCamera Quark\u003c\/strong\u003e provides an excellent field of view for capturing the full solar disk with room to spare. During the partial phases, you would image as normal. During totality, you would remove the entire lens\/Quark assembly to capture the corona, as H-alpha filters block coronal light. The Quark is for observing the chromosphere and prominences, which are visible right up to the second and third contacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Camera Quark work with my fast f\/2.8 zoom lens for capturing solar flares?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but you must stop the lens down. H-alpha etalons require a slow, near-parallel light cone to function correctly. Light reaching the filter at an angle shifts its wavelength, which sets a lower limit of F\/4, so set your f\/2.8 lens to f\/4 or slower using its aperture ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003eFor Canon, For Nikon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e656.28nm (Hydrogen-Alpha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear aperture\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003e±0.5Å wing shift in 0.1Å steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCamera Quark filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCanon or Nikon style camera body adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eReversible lens foot with 1\/4-20 tripod holes and Vixen style dovetail\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eExtension (focal extender) rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e1.25\" drawtube adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e90-240VAC wall adapter with international plugs\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"For Canon","offer_id":44967455228189,"sku":"DAY-DSZTCP","price":2093.0,"currency_code":"CAD","in_stock":true},{"title":"For Nikon","offer_id":44967455260957,"sku":"DAY-DSZTNP","price":2093.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Camera-Quark-1__03123.1597186588.1280.1280.jpg?v=1684342409"},{"product_id":"daystar-quark-for-questar-chromosphere-solar-filter","title":"Daystar Quark for Questar Chromosphere Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAll-In-One Hydrogen-Alpha Solar Filter\u003c\/li\u003e\n\u003cli\u003eTuned for Chromosphere (Surface) Detail\u003c\/li\u003e\n\u003cli\u003eDesigned Exclusively for Questar Telescopes\u003c\/li\u003e\n\u003cli\u003eUSB-Powered for Field Use\u003c\/li\u003e\n\u003cli\u003eIncludes Native Questar Eyepiece and Rear Port Threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark for Questar Chromosphere Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quark for Questar Chromosphere Solar Filter revolutionizes solar observing by integrating a telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003ebarlow\u003c\/a\u003e, adapters, and a hydrogen-alpha etalon into a single, eyepiece-sized unit. Designed exclusively for Questar telescopes, this all-in-one device attaches directly without extra adapters for immediate, high-contrast views of the solar chromosphere. It runs on convenient USB power, making it an ideal solution for both backyard and field observation of the Sun's dynamic surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAn All-in-One Hydrogen-Alpha System for Questar Telescopes\u003c\/h3\u003e\n\u003cp\u003eThis Quark model eliminates the complexity of assembling a separate filter and barlow lens. To prevent damage, Daystar strongly recommends using an Energy Rejection Filter, such as a full aperture red or yellow glass ERF mounted in front of the telescope. The entire optical system is contained in one compact device that inserts directly into your Questar's \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e, ready for an \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe efficient, optimized design reduces weight and cost, removing unnecessary components from the optical train. This integrated approach not only simplifies your setup but also makes high-quality solar observation more accessible and portable than ever before.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChromosphere-Tuned for High-Contrast Solar Surface Detail\u003c\/h3\u003e\n\u003cp\u003eThis Quark is specifically qualified to reveal the intricate, high-contrast details of the Sun's chromosphere. You can expect to clearly see features like filaments snaking across the disk and bright plages surrounding active regions. The internal Daystar Fabry-Perot etalon is protected within the assembly, with anti-reflective coatings and baffles optimized for the hydrogen-alpha wavelength.\u003c\/p\u003e\n\u003cp\u003eInstead of designating a specific bandpass, Daystar tunes each Quark for an observational goal. This Chromosphere model is your choice for studying the dynamic, ever-changing surface of our star, prioritizing contrast over the faint features at the limb.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUSB Power and Native Questar Threading\u003c\/h3\u003e\n\u003cp\u003eEngineered for modern convenience, the Quark runs on standard USB power, allowing it to operate all day from a small, palm-sized battery pack (sold separately) or the included wall adapter. For seamless integration, it features a unique triple-connector snout: a standard 1.25” barrel, native Questar eyepiece threading, and native Questar rear port threading. This ensures a secure, direct fit to your telescope without any guesswork.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Questar Fit:\u003c\/strong\u003e Attaches via the Questar eyepiece thread (1.270-32 UNS) or the rear port thread (M30x0.8) for a rigid connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Output:\u003c\/strong\u003e The 1.25\" \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003eeyepiece holder\u003c\/a\u003e uses a brass compression ring to protect your eyepieces from scratches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Power:\u003c\/strong\u003e The included 90-240VAC adapter comes with international plugs, making it ready for travel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuark Chromosphere vs. Prominence: Choosing Your Solar Target\u003c\/h3\u003e\n\u003cp\u003eDaystar offers two versions of the Quark for Questar, tuned for different solar phenomena. The choice between them depends entirely on your primary observing interest.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model Advantage:\u003c\/strong\u003e The Prominence version has a wider bandpass (Daystar: generally 0.6Å or above), which enhances the visibility of faint, delicate prominence structures erupting from the solar limb against the black background of space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model Advantage:\u003c\/strong\u003e This Chromosphere model has a narrower bandpass (generally 0.5Å or below). This increases contrast across the solar disk, making it superior for resolving the complex web of filaments, plages, and active regions that define the Sun's surface. While very bright prominences may still be visible, this filter's strength is surface detail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features is the Daystar Quark for Questar Chromosphere best for observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis Quark is specifically tuned for the Sun's chromosphere. It excels at revealing high-contrast surface details like \u003cstrong\u003efilaments\u003c\/strong\u003e, \u003cstrong\u003eplages\u003c\/strong\u003e, \u003cstrong\u003eactive regions\u003c\/strong\u003e, and sunspots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quark for Questar on a non-Questar telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e This version of the Quark is engineered exclusively for Questar telescopes and uses their specific rear port and eyepiece threading. It will not attach to or work correctly with other telescope brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Quark for Questar in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark is powered via a standard USB port. It can be run all day using a small, portable USB battery pack (sold separately) or the included wall adapter if an AC outlet is available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy doesn't the Daystar Quark for Questar Chromosphere have a specific FWHM bandpass rating?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDaystar qualifies Quark filters based on their intended observing target (chromosphere or prominence) rather than a specific Full-Width Half-Max (FWHM) bandpass number. This approach ensures the filter is optimized for viewing specific solar features, providing excellent contrast on the solar disk for this Chromosphere model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Daystar Quark for Questar perform on my Questar 3.5 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark is optimized for the focal ratios of Questar telescopes, which are typically slow systems. It will perform very well, delivering sharp, high-contrast views of the chromosphere without needing any additional optical correctors. To prevent damage, Daystar strongly recommends a full aperture red or yellow glass Energy Rejection Filter mounted in front of the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Quark for Questar Chromosphere show me solar prominences at all?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the Chromosphere model is optimized for surface detail, you may still be able to see very bright prominences against the blackness of space. However, for observing fainter, more detailed prominence structures, the \u003cstrong\u003eDaystar Quark for Questar Prominence model\u003c\/strong\u003e is the recommended choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eHydrogen-Alpha Solar Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003e±0.5Å wing shift in 0.1Å steps (Chromosphere model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget Wavelength\u003c\/td\u003e\n\u003ctd\u003eHydrogen-alpha (656nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eQuestar Telescopes Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Focal Ratio\u003c\/td\u003e\n\u003ctd\u003eF\/13 and slower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Connections\u003c\/td\u003e\n\u003ctd\u003e1.25” snout, Native Questar eyepiece thread (1.270-32 UNS), Native Questar rear port thread (M30x0.8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Eyepiece Holder with Brass Compression Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Power Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC Wall Adapter with International Plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003eIncluded Twist-Case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Warning\u003c\/td\u003e\n\u003ctd\u003eNot suited for off-axis application\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated, 25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear aperture\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e656.28 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Quark for Questar Chromosphere Solar Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e90-240VAC Wall Power Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInternational Plug Adapters\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Twist-Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Questar_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967455293725,"sku":"DAY-DSZQC","price":1813.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quark-Questar-1__42269.1597184555.1280.1280.jpg?v=1684342413"},{"product_id":"daystar-quark-for-questar-prominence-solar-filter","title":"Daystar Quark for Questar Prominence Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTransforms a Questar telescope into a Hydrogen-alpha solar telescope\u003c\/li\u003e\n\u003cli\u003eProminence model optimized for high-contrast views of solar limb activity\u003c\/li\u003e\n\u003cli\u003eAll-in-one, electronically heated etalon design for on-band stability\u003c\/li\u003e\n\u003cli\u003eInstalls directly into the Questar optical path for a seamless fit\u003c\/li\u003e\n\u003cli\u003ePowered by a standard USB connection (90-240VAC wall adapter with international plugs included)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark for Questar Prominence Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quark for Questar brings modern, electronically-heated Hydrogen-alpha filtering to the legendary Questar telescope. This all-in-one unit contains a Fabry-Pérot etalon, telecentric optics, and thermal regulation systems in a single device that installs directly into the Questar's optical path. The Prominence model is specifically designed to deliver the brightest, highest-contrast views of eruptive solar activity happening at the edge of the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eInstant H-alpha Astronomy for Your Questar Telescope\u003c\/h3\u003e\n\u003cp\u003eTurn your classic Questar into a sophisticated solar observing instrument without a complex and expensive component stack. The Quark is an integrated solution that replaces the standard \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003eeyepiece holder\u003c\/a\u003e, providing a simple and elegant way to witness the dynamic solar atmosphere in the specific wavelength of Hydrogen-alpha light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized for Solar Prominences: High-Contrast Limb Detail\u003c\/h3\u003e\n\u003cp\u003eThis \"Prominence\" version of the Quark is engineered with a slightly wider H-alpha bandpass compared to its \"Chromosphere\" counterpart. This design choice results in a brighter image and boosts the contrast of faint structures against the blackness of space, making it the ideal choice for observing solar flares, erupting prominences, and delicate plasma loops extending from the solar limb.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated Design: A Seamless Fit for the Questar Optical Path\u003c\/h3\u003e\n\u003cp\u003eUnlike generic \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filters\u003c\/a\u003e, the Quark for Questar is custom-built to work with the specific optical and mechanical properties of the Questar telescope. It threads directly into the telescope, ensuring proper focus, optical alignment, and a secure connection. This purpose-built design eliminates the compatibility issues and optical compromises that can arise from adapting universal filters to this unique instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eQuark Prominence vs. Chromosphere: Choosing the Right Filter for Your Goals\u003c\/h3\u003e\n\u003cp\u003eDaystar offers two variants of the Quark to suit different observing priorities. Understanding the trade-off is key to selecting the right one for you.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Model Advantage:\u003c\/strong\u003e A Chromosphere Quark has a narrower bandpass. This increases contrast on the Sun's disk, revealing finer detail in surface features like filaments and plage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Model Advantage:\u003c\/strong\u003e The Prominence Quark's wider bandpass produces a brighter image that excels at showing faint, wispy detail in prominences against the dark sky. While surface detail is still visible, it is optimized for activity at the solar limb.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Daystar Quark for Questar different from a standard Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quark for Questar is specifically designed to integrate mechanically and optically with the Questar telescope. It has a standard Questar \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e thread and snout so it inserts directly into the Questar eyepiece drawtube, and its triple combo front snout (1.25\" snout, Questar eyepiece thread 1.270-32 UNS and Questar rear port thread M30x0.8) also allows rear port mounting. When using the rear port, Daystar strongly recommends a metal plug in the eyepiece drawtube so unfiltered sunlight cannot exit the right angle port. The Quark needs about 67mm of additional backfocus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an Energy Rejection Filter (ERF) with the Quark for Questar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is strongly recommended. To prevent damage, use a full aperture red or yellow glass Energy Rejection Filter (ERF) mounted in front of the telescope; one is suggested for apertures over 80mm, and all dedicated solar tracking applications should employ energy rejection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Daystar Quark for Questar Prominence model show a large solar flare?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Prominence model is ideal for this scenario. Its design prioritizes image brightness and contrast at the solar limb. A large solar flare will appear as a brilliant, sharply-defined eruption against the black background of space, allowing you to observe its structure and evolution with exceptional clarity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quark for Questar on other telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this version is purpose-built for the Questar telescope only. Its specific threading and optical placement are not compatible with standard \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e, \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSCTs\u003c\/a\u003e, or other telescope designs. Daystar produces other Quark models for use with different instruments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I want to see fine surface detail on the Sun with my Questar, is this the right Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the Prominence model will show some surface detail, it is not optimized for it. For prioritizing fine surface features like plage and the intricate structure of filaments, the \u003cstrong\u003eDaystar Quark Chromosphere\u003c\/strong\u003e model would be the better choice. Its narrower bandpass increases contrast on the solar disk at the expense of some prominence brightness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power source does the Daystar Quark for Questar require to operate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quark is electronically heated and requires a stable power source to maintain its on-band wavelength. It is powered via a standard USB port and requires a power supply (such as a wall adapter or portable battery pack) capable of delivering sufficient amperage. Please consult the product manual for the specific power requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecifications\u003c\/td\u003e\n\u003ctd\u003eNot available for this product.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e656.28 nm (6562.8 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking filter size\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear aperture\u003c\/td\u003e\n\u003ctd\u003e19 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eWing shift +\/- 0.5 Å in 0.1 Å increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark filter, power supply (90-240VAC wall adapter with US, UK, Euro and Australian plugs), user manual.\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Questar_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967455326493,"sku":"DAY-DSZQP","price":1813.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quark-Questar-1__51586.1597184522.1280.1280.jpg?v=1684342416"},{"product_id":"daystar-sodium-quark-solar-filter","title":"Daystar Sodium Quark Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eObserves the Sodium D-Line at 5890 Å\u003c\/li\u003e\n\u003cli\u003eBandpass of approximately 0.3-0.5 Angstroms\u003c\/li\u003e\n\u003cli\u003eIntegrated 4.2X Telecentric Barlow Lens\u003c\/li\u003e\n\u003cli\u003eDesigned for F\/4 to F\/9 Refracting Telescopes\u003c\/li\u003e\n\u003cli\u003eAll-in-one, eyepiece-sized solar filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Sodium Quark Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Sodium Quark Solar Filter isolates the brilliant 5890 Å Sodium D-line with a bandpass of approximately 0.3-0.5 angstroms, revealing high-contrast details across the solar photosphere. This all-in-one unit integrates a custom 4.2X telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003eBarlow lens\u003c\/a\u003e, making it fully optimized for any refracting telescope with a focal ratio between F\/4 and F\/9. The result is a simple, eyepiece-sized device that delivers sharp, flat-field views of sunspots, plage, and granulation with significantly shorter exposure times than other narrowband wavelengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Contrast Solar Details at the 5890 Å Sodium D-Line\u003c\/h3\u003e\n\u003cp\u003eThe Sodium D-line offers a unique and intensely bright window into the Sun's photosphere. With the Sodium Quark's sub-angstrom bandpass, you can resolve fine sunspot structure, bright patches of plage, and the textured pattern of solar granulation. Under excellent seeing conditions, even the larger super-granulation cells may become visible, alongside the flare footprints known as flare kernels.\u003c\/p\u003e\n\u003cp\u003eBecause the Sodium D-line is brighter than both Calcium and Hydrogen-alpha, visual observation is easier and imaging exposures are dramatically shorter. This allows you to capture fleeting moments of excellent seeing and freeze atmospheric turbulence for sharper results, revealing dynamic features that are often washed out at other wavelengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIntegrated 4.2X Telecentric Barlow for F\/4-F\/9 Refractors\u003c\/h3\u003e\n\u003cp\u003eDaystar's \"All-In-One\" design eliminates the complexity of traditional solar filter setups by combining a Fabry-Perot etalon and a fully optimized 4.2X telecentric barlow into a single, compact unit. This design ensures the filter receives the parallel light beam it needs to perform correctly, regardless of your \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e's native focal length, as long as it falls within the F\/4 to F\/9 range. The custom telecentric optics also ensure a uniformly illuminated and sharp, flat field from edge to edge.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Operation:\u003c\/strong\u003e Just insert the Sodium Quark into your 1.25\" or 2\" diagonal, add an \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e, and you are ready to observe. No complex adapters or spacing calculations are required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Design:\u003c\/strong\u003e The compact, eyepiece-sized form factor eliminates unnecessary weight and components, making it easy to balance on any mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn-Axis Use Only:\u003c\/strong\u003e This filter is engineered for on-axis use in refracting telescopes and is not suitable for off-axis solar scopes or other designs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSodium vs. H-alpha: Why the 5890 Å Line is Brighter\u003c\/h3\u003e\n\u003cp\u003eWhile Hydrogen-alpha filters are the standard for viewing the chromosphere and dramatic prominences on the solar limb, the Sodium Quark targets the photosphere with a key advantage: brightness. The light emitted at the 5890 Å Sodium D-line is inherently more intense than the 6563 Å H-alpha line.\u003c\/p\u003e\n\u003cp\u003eThis increased brightness translates directly into shorter camera exposures and an easier visual experience, reducing eye strain during long observing sessions. While an H-alpha filter is necessary for limb detail, the Sodium Quark excels at delivering high-contrast, high-resolution views of features on the solar disk itself, like the intricate details within sunspot umbra and penumbra.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features can I see with the Daystar Sodium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Sodium Quark is designed to reveal features in the Sun's \u003cstrong\u003ephotosphere\u003c\/strong\u003e. You can expect to see high-resolution details in \u003cstrong\u003esunspots\u003c\/strong\u003e, bright areas of \u003cstrong\u003eplage\u003c\/strong\u003e, and the convection cells of \u003cstrong\u003egranulation\u003c\/strong\u003e. Under steady seeing, larger \u003cstrong\u003esuper-granulation\u003c\/strong\u003e patterns and the base of solar flares (\u003cstrong\u003eflare kernels\u003c\/strong\u003e) may also be visible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the Sodium Quark different from a Hydrogen-alpha Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey view different layers of the Sun. An \u003cstrong\u003eH-alpha Quark\u003c\/strong\u003e shows the \u003cstrong\u003echromosphere\u003c\/strong\u003e, famous for solar prominences, filaments, and surface texture. The \u003cstrong\u003eSodium Quark\u003c\/strong\u003e shows the deeper \u003cstrong\u003ephotosphere\u003c\/strong\u003e at the 5890 Å wavelength, which is better for sunspot detail and granulation. The Sodium view is also significantly brighter, allowing for shorter imaging exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill my 80mm f\/6 refractor work well with the Sodium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, perfectly. The Sodium Quark is optimized for any refractor with a focal ratio between \u003cstrong\u003eF\/4 and F\/9\u003c\/strong\u003e. An 80mm f\/6 refractor falls right in that range and will provide excellent views. You do not need any additional optical correctors; simply insert the Quark into your \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate energy rejection filter (ERF) with the Sodium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUse an Energy Rejection Filter on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. Only for brief observing sessions with less than 80mm of aperture when not using a tracking mount can it be OK to use no energy rejection at all; stay alert for any rise in temperature of the telescope, diagonal or Quark. Under approximately 120mm of aperture a screw in \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e can be used in front of the diagonal (not with oil spaced objectives or telescopes with an integrated rear field flattener or Petzval lens); a yellow glass front mount ERF is the safest option; red glass ERFs do not pass the Sodium D-line.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Sodium Quark show solar flares compared to an H-alpha filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn H-alpha filter shows the entire structure of a solar flare as it erupts into the chromosphere. The Sodium Quark shows the \"flare footprints\" or \u003cstrong\u003eflare kernels\u003c\/strong\u003e on the photosphere. These are the intensely bright, compact points at the base of the magnetic loops where the flare originates, offering a different perspective on the event's energy release.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply does the Daystar Sodium Quark use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark requires a 5V DC power source to heat its internal etalon to the precise operating temperature. The product description notes that its low power consumption allows it to run all day from a small, palm-sized \u003cstrong\u003eoptional battery pack\u003c\/strong\u003e. A 90-240VAC wall adapter with international plug adapters is included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003eSodium D-Line (5890 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.3 - 0.5 Angstroms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Barlow\u003c\/td\u003e\n\u003ctd\u003e4.2x Telecentric Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Telescope Type\u003c\/td\u003e\n\u003ctd\u003eRefractors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Focal Ratio\u003c\/td\u003e\n\u003ctd\u003eF\/4 - F\/9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Application\u003c\/td\u003e\n\u003ctd\u003eOn-axis only (not for off-axis use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking filter size\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eWing shift +\/- 0.5 Å in 0.1 Å increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Sodium Quark Solar Filter × 1 90-240VAC Wall Adapter with International Plugs × 1 User Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967456833821,"sku":"DAY-DSZSD","price":1813.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Sodium-Quark-DSZSD-1__67412.1597176316.1280.1280.jpg?v=1684342420"},{"product_id":"daystar-magnesium-quark-solar-filter","title":"Daystar Magnesium Quark Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eObserve the unique Magnesium I (Mg I) solar spectral line\u003c\/li\u003e\n\u003cli\u003eAll-in-one design fits standard 1.25\" and 2\" diagonals\u003c\/li\u003e\n\u003cli\u003eIntegrated 4.2X telecentric Barlow lens for superior field flatness\u003c\/li\u003e\n\u003cli\u003eOptimized for F\/4 to F\/9 refractors\u003c\/li\u003e\n\u003cli\u003eUSB-powered for convenient field use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Magnesium Quark Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Magnesium Quark Solar Filter brings the unique Mg I b2 spectral line to your \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e in a single, eyepiece-sized unit. It incorporates a fully optimized, integrated 4.2X telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003eBarlow lens\u003c\/a\u003e to ensure a flat field of view across a wide range of refractor focal ratios from f\/4 to f\/9. This all-in-one design simplifies high-resolution solar observing by eliminating complex adapters, and its USB power input allows for extended sessions in the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eObserving the Sun in Magnesium I: A Unique Chromospheric View\u003c\/h3\u003e\n\u003cp\u003eWhile Hydrogen-alpha reveals dramatic prominences and active regions, the Magnesium I line offers a different perspective on the sun's chromosphere. This wavelength is ideal for studying the quiet sun, revealing intricate details in plage (bright patches) and the chromospheric network that are often more subtle or invisible in H-alpha. The view is a unique window into the temperature and density structure of the solar atmosphere just above the photosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAll-in-One Design with Integrated 4.2X Telecentric Optics\u003c\/h3\u003e\n\u003cp\u003eDaystar has engineered the Magnesium Quark for ultimate simplicity and optical purity. The unit contains a custom 4.2X telecentric Barlow lens that is fully optimized for the Fabry-Perot etalon, ensuring superior field flatness and eliminating the need for additional components. You simply insert the Quark into your 1.25\" diagonal, add an \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e, and begin observing without worrying about complex configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUSB-Powered for Field Use with Standard 1.25\" Connectivity\u003c\/h3\u003e\n\u003cp\u003eDesigned for portability, the Magnesium Quark is powered via a standard USB 5v, 1.5amp connection, allowing it to run all day from a small, palm-sized battery pack (sold separately). The housing fits any standard 1.25\" eyepiece drawtube and features a brass compression ring to protect your eyepieces from scratches. While it has a 1.25\" output, optional accessories are available for use with 2\" eyepieces or SCT rear threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMagnesium Quark vs. Hydrogen-Alpha: What You See Differently\u003c\/h3\u003e\n\u003cp\u003eChoosing between solar filters depends on your observing goals. The Magnesium Quark and a Hydrogen-alpha filter show you two different layers and phenomena in the sun's dynamic atmosphere.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnesium I (Mg I):\u003c\/strong\u003e Excels at showing fine, low-contrast detail in the lower-to-mid chromosphere. It is the preferred wavelength for observing the structure of plage and the quiet-sun network. It does not show prominences or filaments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrogen-alpha (H-alpha):\u003c\/strong\u003e The classic choice for high-contrast, dynamic events. H-alpha is unmatched for viewing solar prominences erupting from the limb, dark filaments snaking across the disk, and the dramatic structure of active regions around sunspots.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features can I see with the Daystar Magnesium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Magnesium Quark is designed to reveal features in the sun's lower chromosphere. You can expect to see \u003cstrong\u003eplage\u003c\/strong\u003e (bright areas), the fine, web-like \u003cstrong\u003echromospheric network\u003c\/strong\u003e, and details in and around sunspots that are distinct from other wavelengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope is required for the Daystar Magnesium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Magnesium Quark is optimized for use with refracting telescopes with focal ratios between \u003cstrong\u003ef\/4 and f\/9\u003c\/strong\u003e. It is not suitable for off-axis use on \u003ca href=\"\/en-int\/collections\/reflectors\"\u003ereflector\u003c\/a\u003e or \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrain telescopes\u003c\/a\u003e. Use a \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e in front of the \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. Red or yellow glass ERFs cannot be used with the Magnesium Quark.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need an Energy Rejection Filter (ERF) with the Daystar Magnesium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUse energy rejection on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. For telescopes under approximately 120mm of aperture, use a screw in UV\/IR cut filter in front of the telescope diagonal (not with oil spaced objectives or telescopes with an integrated rear field flattener or Petzval lens). Yellow or red glass front mount ERFs do not pass the green Magnesium wavelength and cannot be used with the Magnesium Quark. Only for brief sessions under 80mm of aperture without a tracking mount can it be OK to use no energy rejection; stay alert for any rise in temperature.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Magnesium Quark in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark uses a standard USB power connection (5v, 1.5amp). It includes a wall adapter, but for field use, it can be powered all day by a small, portable USB power bank, similar to one you would use to charge a smartphone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Magnesium Quark on my 8\" SCT to see chromospheric details?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Daystar Magnesium Quark is designed specifically for use with refracting telescopes and is not suited for off-axis applications on reflectors or SCTs. Using it on an SCT would not produce an even, on-band image and would expose the filter to concentrated heat, risking damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Daystar Magnesium Quark show prominences on the solar limb with my 102mm f\/7 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Solar prominences are best observed in the Hydrogen-alpha spectral line. The Magnesium I wavelength observed by this Quark does not show prominences. Its strength lies in revealing different structures on the solar disk itself, such as plage and the chromospheric network.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003eMagnesium I (Mg I) b2 line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.3-0.5 Å FWHM (etalon dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelecentric Barlow\u003c\/td\u003e\n\u003ctd\u003eIntegrated 4.2X, fully optimized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Focal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4 - f\/9 Refractors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" and 2\" combo male snouts with safety indent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" with brass compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eUSB 5v, 1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Note\u003c\/td\u003e\n\u003ctd\u003eNot suited for off-axis applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking filter size\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eWing shift +\/- 0.5 Å in 0.1 Å increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Magnesium Quark Solar Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e90-240VAC Wall Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInternational Plug Adapters\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case for Storage\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Magnesium_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457128733,"sku":"DAY-DSZMG","price":2093.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Magnesium-Quark-DSZMG-1__08874.1597176103.1280.1280.jpg?v=1684342425"},{"product_id":"daystar-calcium-quark-solar-filter","title":"Daystar Calcium Quark Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTargets the 3968.5Å Calcium H-line Wavelength\u003c\/li\u003e\n\u003cli\u003eAll-in-One Eyepiece-Style Solar Filter\u003c\/li\u003e\n\u003cli\u003eOptimized for F\/7 to F\/30 Refractor Telescopes\u003c\/li\u003e\n\u003cli\u003eIntegrated 25mm Blocking Filter\u003c\/li\u003e\n\u003cli\u003eUSB Powered (5V, 1.5A) for Field Use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Calcium Quark Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Calcium Quark Solar Filter is an all-in-one eyepiece-style filter that brings the Sun's upper chromosphere into view at the 3968.5Å wavelength. Designed for \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e with focal ratios of F\/7 or longer, this unit integrates a Fabry-Perot etalon with an approximate 5Å bandpass and a 25mm blocking filter into a single 1.25\" device. It operates on standard 5V, 1.5A USB power, making it simple to deploy for detailed views of solar plage and supergranulation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCalcium H-Line Views at 3968.5Å: Seeing the Upper Chromosphere\u003c\/h3\u003e\n\u003cp\u003eDaystar specifically chose the Calcium H-line (3968.5Å) for this Quark to maximize visual accessibility. While the nearby K-line provides similar scientific data for imagers, its shorter wavelength is invisible to many experienced observers. The H-line offers the same high-contrast views of the upper chromosphere but at a wavelength most people can see, revealing bright plage surrounding sunspots and the intricate network of supergranulation cells across the solar disk.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for Visual Use:\u003c\/strong\u003e The Calcium H-line wavelength is more easily perceived by the human eye than the shorter K-line, opening up this dynamic solar layer to more observers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~5Å Bandpass:\u003c\/strong\u003e The approximate 5Å Full-Width Half-Maximum (FWHM) bandpass is ideal for highlighting the high-contrast structures in the upper chromosphere without being overly restrictive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Coatings:\u003c\/strong\u003e Anti-reflective coatings are optimized for the 397nm wavelength, and internal baffles are added to maximize contrast and reveal subtle solar details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAll-in-One Design for F\/7-F\/30 Refractors\u003c\/h3\u003e\n\u003cp\u003eThe Quark's integrated design simplifies what was once a complex and expensive setup. By combining the etalon, adapters, and a 25mm blocking filter into a single eyepiece-sized housing, it eliminates compatibility issues and reduces weight. This system is engineered to perform best with refractors in the F\/7 to F\/30 focal ratio range, dropping directly into your 1.25\" diagonal for immediate use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope Compatibility:\u003c\/strong\u003e Optimized for refractors F\/7 and longer. For shorter focal ratio refractors, a 2x or 2.5x Tele Vue Powermate is required to bring the scope into the Quark's optimal performance range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Safety:\u003c\/strong\u003e The unit contains a 25mm blocking filter with a 21mm clear aperture. Daystar strongly recommends a \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e over 80mm of aperture. On telescopes under approximately 150mm it screws in front of the telescope \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e and must be the first optical element to encounter concentrated light; verify that it passes 397nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eERF Note:\u003c\/strong\u003e The Calcium Quark is not compatible with red or yellow glass Energy Rejection Filters (ERFs). A UV\/IR cut filter is the correct accessory.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUSB-Powered for All-Day Sessions: 5V, 1.5A Operation\u003c\/h3\u003e\n\u003cp\u003eThis filter's heating system, which is crucial for tuning the etalon to the precise 3968.5Å wavelength, runs on a standard 5V, 1.5A USB power source. This low power consumption allows you to run the Quark all day from the included universal AC wall adapter or a small, optional palm-sized USB battery pack for ultimate portability in the field. The 1.25\" barrel features a brass compression ring to securely hold your \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e without marring its surface.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Power:\u003c\/strong\u003e The included 90-240VAC adapter comes with international plugs, ensuring you can power the Quark anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField-Ready:\u003c\/strong\u003e Its ability to run off a common USB power bank frees you from needing AC power at your observing site.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Storage:\u003c\/strong\u003e Every Calcium Quark ships in a durable, dust-free Twist-Case to protect the precision optics during transport and storage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Daystar Quark use Calcium H-line instead of K-line?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDaystar chose the \u003cstrong\u003eCalcium H-line (3968.5Å)\u003c\/strong\u003e because it is more easily visible to a wider range of observers, particularly those with more life-long observing experience. The shorter wavelength of the K-line can be difficult or impossible for some people to see. The H-line provides virtually identical high-contrast views of chromospheric features like plage and supergranulation, ensuring more people can enjoy the view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill my fast f\/5 refractor work with the Daystar Calcium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot directly. The Calcium Quark is optimized for telescopes with a focal ratio of \u003cstrong\u003eF\/7 to F\/30\u003c\/strong\u003e. To use it with a faster telescope like an f\/5 refractor, you must use a Barlow-type lens to slow the light cone. Use a \u003cstrong\u003e2x or 2.5x Tele Vue Powermate\u003c\/strong\u003e placed before the Quark to achieve the best performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Daystar Calcium Quark in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Calcium Quark runs on standard \u003cstrong\u003eUSB power (5V, 1.5A)\u003c\/strong\u003e. While it includes a 90-240VAC wall adapter for home use, its low power draw makes it ideal for field use with a portable USB battery pack. An optional 8-hour battery pack is available, but any standard power bank that meets the 5V, 1.5A requirement will work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any other filters with the Calcium Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, above 80mm of aperture. Daystar strongly recommends a UV\/IR cut filter over 80mm of aperture; for telescopes under approximately 150mm it screws in front of the telescope diagonal and must be the first optical element to encounter concentrated light (not with telescopes with an integrated rear field flattener or Petzval lens). Verify the filter passes 397nm. For brief sessions under 80mm of aperture without a tracking mount, no rejection is necessary, but stay alert for any rise in temperature. Over 150mm, consult Daystar. It is critical to note that the Calcium Quark is \u003cstrong\u003eNOT compatible with red or yellow glass Energy Rejection Filters (ERFs)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features can I see with the Calcium Quark on a 100mm f\/9 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 100mm f\/9 refractor is an excellent match for the Calcium Quark. You can expect to see detailed views of the Sun's upper chromosphere, which appears very different from Hydrogen-alpha. Key features visible in Calcium H-line include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlage:\u003c\/strong\u003e Bright, active regions that often surround sunspot groups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupergranulation:\u003c\/strong\u003e A network of large-scale convection cells that cover the entire solar disk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSunspots:\u003c\/strong\u003e The umbra and penumbra of sunspots are visible, often with surrounding bright plage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlares:\u003c\/strong\u003e Very bright, eruptive events can sometimes be witnessed in this wavelength.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Calcium Quark include a built-in Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the Daystar Calcium Quark does not contain any \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003eBarlow\u003c\/a\u003e or focusing elements. It is a dedicated filtering device. You will use your own eyepieces for magnification and your telescope's \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e to achieve a sharp image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eCalcium H-line \"Eyepiece\" Quark\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e3968.5Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass (FWHM)\u003c\/td\u003e\n\u003ctd\u003eApproximately 5Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eWing shift +\/- 0.5Å in 0.1Å increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Telescope Type\u003c\/td\u003e\n\u003ctd\u003eRefractors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Focal Ratio\u003c\/td\u003e\n\u003ctd\u003eF\/7 - F\/30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Filter\u003c\/td\u003e\n\u003ctd\u003eIntegrated 25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e21mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Barrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003eBrass Compression Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eUSB 5V, 1.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Power Adapter\u003c\/td\u003e\n\u003ctd\u003e90-240VAC Wall Adapter w\/ International Plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVendor Part Number\u003c\/td\u003e\n\u003ctd\u003eDSZCH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Calcium Quark Solar Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e90-240VAC USB Power Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInternational Plug Set\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eTwist-Case Storage Container × 1 Front Snouts (silver 1.25\", 2\", black 1.25\" extension) × 3 User Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Quark_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457194269,"sku":"DAY-DSZCH","price":1813.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Calcium-Quark-DSZCH-1__84784.1597175942.1280.1280.jpg?v=1684342409"},{"product_id":"daystar-eyepiece-holder-for-quark-2","title":"Daystar Eyepiece Holder for Quark - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts Daystar Quark filters for use with 2\" eyepieces\u003c\/li\u003e\n\u003cli\u003eMaximizes the field of view for full-disk solar observation\u003c\/li\u003e\n\u003cli\u003eFeatures a non-marring brass compression ring to protect eyepiece barrels\u003c\/li\u003e\n\u003cli\u003eInstalls directly onto the Quark's standard threads with no additional adapters\u003c\/li\u003e\n\u003cli\u003eSimple thumbscrew design for secure locking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Eyepiece Holder for Quark - 2\"\u003c\/h2\u003e\n\u003cp\u003eExpand your solar observing experience by upgrading your Daystar Quark to accept 2\" eyepieces with the Daystar 2\" Eyepiece Holder. This simple, direct-fit adapter replaces the standard 1.25\" holder, unlocking the ability to use long focal length, wide-field eyepieces for breathtaking, full-disk views of the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUpgrade Your Quark for 2\" Eyepieces\u003c\/h3\u003e\n\u003cp\u003eThe primary purpose of the Daystar Quark is high-magnification solar detail, but this 2\" Eyepiece Holder transforms its capability. By swapping out the stock 1.25\" holder, you can now use eyepieces like the Tele Vue 55mm Plössl to achieve the widest possible field of view, allowing you to frame the entire solar disk and its surrounding prominences in a single, immersive view. Installation is a simple matter of unthreading the original holder and threading this one on, using the Quark's standard threads without any extra adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure, Non-Marring Brass Compression Ring\u003c\/h3\u003e\n\u003cp\u003eTo protect your investment in 2\" eyepieces, this holder features a brass compression ring clamp. Unlike basic set screws that can scratch and dent the barrels of your eyepieces, the brass ring provides a firm, even grip around the entire circumference. A single, easy-to-use thumbscrew tightens the ring, ensuring your eyepiece is held securely and perfectly centered in the optical path without causing any cosmetic damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use the Daystar 2\" Eyepiece Holder instead of the standard 1.25\" holder?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe standard 1.25\" holder limits your maximum true field of view. The \u003cstrong\u003eDaystar 2\" Eyepiece Holder\u003c\/strong\u003e allows you to use low-power, 2\" eyepieces, which are necessary to see the entire solar disk at once in many longer focal length telescopes. It's the ideal accessory for observers who want both high-power detail and wide-field context views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar 2\" Eyepiece Holder compatible with all Quark models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This holder is designed with the standard Quark threading and is compatible with all Daystar Quark models, including the Hydrogen-alpha, Calcium H-line, Sodium, and Magnesium versions. It is a direct replacement for the 1.25\" holder that ships with every Quark.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the brass compression ring on this holder?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe brass compression ring provides a more secure and safer way to hold your eyepieces. A simple set screw puts all the pressure on a single point, which can scratch the eyepiece barrel and cause it to tilt slightly. The \u003cstrong\u003ebrass ring\u003c\/strong\u003e distributes the pressure evenly, preventing damage and ensuring better optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need any other adapters to install the Daystar 2\" Eyepiece Holder on my Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The holder is designed to thread directly onto the Daystar Quark body after you remove the original 1.25\" eyepiece holder. No additional adapters or tools are required for the installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich eyepieces work best for viewing the full solar disk with the Daystar 2\" Holder and a 1000mm focal length refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo frame the entire sun, you need a low-power eyepiece. With a 1000mm telescope, a long focal length 2\" eyepiece like a \u003cstrong\u003eTele Vue 55mm Plössl\u003c\/strong\u003e or a 41mm Panoptic is recommended. These will provide the wide true field of view necessary to fit the full solar disk and prominences into the view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes using a heavy 2\" eyepiece with the Daystar Quark affect my telescope's balance?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it's a critical consideration. Large 2\" eyepieces can be significantly heavier than 1.25\" eyepieces. When you switch to the \u003cstrong\u003eDaystar 2\" Holder\u003c\/strong\u003e and a heavy eyepiece, you will likely need to rebalance your telescope by sliding the optical tube forward or adjusting \u003ca href=\"\/en-int\/collections\/counterweights\"\u003ecounterweights\u003c\/a\u003e to prevent tracking errors and strain on your mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eVisual adapter (2\" eyepiece holder)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003eStandard Quark thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-side connection\u003c\/td\u003e\n\u003ctd\u003e2\" eyepiece holder with brass compression ring and thumbscrew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Eyepiece Holder for Quark - 2\"\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457390877,"sku":"DAY-SZ1D2","price":91.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SZ1D2__44323.1597175225.1280.1280.jpg?v=1684342417"},{"product_id":"daystar-quark-to-c-adapter","title":"Daystar Quark to C adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDirect C-Mount Threading for Daystar Quark\u003c\/li\u003e\n\u003cli\u003eAdds 10mm of Optical Path Length\u003c\/li\u003e\n\u003cli\u003eInternal Knife-Edge Baffles for Maximum Contrast\u003c\/li\u003e\n\u003cli\u003eLightweight 0.06 lb Anodized Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eCompatible with C-thread Interference Eliminator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark to C adapter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quark to C adapter provides a rigid, direct-thread connection for C-mount cameras, adding just 10mm of optical path length (19mm overall). Weighing only 0.06 lb, this lightweight anodized black adapter ensures a secure imaging train without introducing flexure or tilt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRigid, Baffled Connection: 10mm of Secure C-Mount Spacing\u003c\/h3\u003e\n\u003cp\u003eThis adapter creates a secure, threaded link between your Daystar Quark and any C-mount camera, eliminating the potential for tilt or sag common with slip-fit or compression ring adapters. Internal knife-edge baffles are machined to trap stray light, ensuring maximum image contrast by preventing internal reflections from reaching the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolving Newton's Rings: Compatibility with the C-thread Interference Eliminator\u003c\/h3\u003e\n\u003cp\u003eSolar imagers often encounter Newton's rings—concentric interference patterns caused by nearly parallel optical surfaces. This adapter is fully compatible with Daystar's C-thread Interference Eliminator (sold separately), which is the recommended solution for mitigating this distracting artifact and achieving clean, high-contrast solar images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Daystar Quark to C adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quark to C adapter is designed to create a direct, secure threaded connection between a Daystar Quark \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e and a camera that uses C-mount threads. This provides a rigid imaging train, which is critical for high-resolution solar photography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Daystar Quark to C adapter improve image quality?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBeyond providing a rigid, tilt-free connection, the adapter features \u003cstrong\u003einternal knife-edge baffles\u003c\/strong\u003e. These baffles are designed to trap stray light and prevent internal reflections, which significantly improves image contrast by darkening the background sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter solve Newton's rings in my solar images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, not by itself. This adapter is designed to be \u003cstrong\u003ecompatible with Daystar's C-thread Interference Eliminator\u003c\/strong\u003e (sold separately), which is the component that actually corrects for Newton's rings. The adapter provides the correct threading and spacing to place the Interference Eliminator in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the optical path length added by the Daystar Quark to C adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds \u003cstrong\u003e10mm of optical path length\u003c\/strong\u003e from flange to flange. The total physical length of the adapter is 19mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm using a ZWO ASI174MM with my Quark for H-alpha imaging. Is this the right adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO ASI174MM is a popular solar imaging camera that uses C-mount threads when its 1.25\" nosepiece is removed. This adapter will allow you to thread the ASI174MM camera body directly to your Quark for a very secure connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I see banding patterns when imaging the Sun's chromosphere with my Quark, will this adapter help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe banding patterns, often called Newton's rings, are a common issue in H-alpha imaging. This adapter is the first step to solving them, as it allows you to integrate the \u003cstrong\u003eC-thread Interference Eliminator\u003c\/strong\u003e into your setup. The combination of this adapter and the Interference Eliminator is the recommended solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eC-mount (1-32 UN) Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eDaystar Quark (1 3\/8-24 UN Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (Flange-to-Flange)\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (Overall)\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Design\u003c\/td\u003e\n\u003ctd\u003eKnife-edge baffles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAnodized Black Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.06 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e0.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eThread converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark to C adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457456413,"sku":"DAY-SZ1C","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SZ1C-1__27575.1597175115.1280.1280.jpg?v=1684342420"},{"product_id":"daystar-quark-to-t-adapter","title":"Daystar Quark to T adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects T-thread cameras directly to a Daystar Quark\u003c\/li\u003e\n\u003cli\u003eAdds 10mm of spacing (flange-to-flange)\u003c\/li\u003e\n\u003cli\u003eInternal knife-edge baffles reduce reflections\u003c\/li\u003e\n\u003cli\u003eRigid, direct-thread connection prevents flexure\u003c\/li\u003e\n\u003cli\u003eLightweight design at only 0.06 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark to T adapter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quark to \u003ca href=\"\/en-int\/collections\/imaging-adapters\"\u003eT adapter\u003c\/a\u003e provides a rigid, direct-thread connection for your imaging camera, with a precise 10mm flange-to-flange length for a minimal profile. Weighing just 0.06 lb and featuring an overall length of 19mm, this adapter ensures a secure, flex-free fit between your Quark and T-thread camera, which is critical for sharp solar imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 10mm Rigid T-Thread Connection\u003c\/h3\u003e\n\u003cp\u003eThis adapter gives imagers a solid, threaded mounting solution, replacing \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003eeyepiece holders\u003c\/a\u003e that can introduce tilt or flexure from thumbscrews and compression rings. The direct T-thread connection ensures your camera sensor remains perfectly parallel to the focal plane. The 10mm flange-to-flange distance provides a compact and stable link in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBaffled for High-Contrast Solar Imaging\u003c\/h3\u003e\n\u003cp\u003eTo deliver the best possible contrast, the adapter's interior is machined with knife-edge baffles. These sharp ridges are designed to trap stray light and eliminate internal reflections that can wash out faint prominences and delicate chromospheric texture. This meticulous design detail is essential for pulling maximum detail from the solar surface.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNewton's Rings Mitigation:\u003c\/strong\u003e The adapter is fully compatible with Daystar's T-thread Interference Eliminator, which is highly recommended for removing the banding artifacts common in monochromatic solar imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Finish:\u003c\/strong\u003e The black anodized finish further reduces reflections and protects the adapter from wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Daystar Quark to T adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quark to T adapter is designed for astro-imagers. It allows you to securely attach a camera with standard T-threads (M42x0.75) directly to the Daystar Quark, creating a rigid connection that prevents camera sag or tilt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Daystar Quark to T adapter improve solar images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter improves images in two ways. First, its \u003cstrong\u003erigid connection\u003c\/strong\u003e prevents flexure, keeping the camera sensor perfectly aligned. Second, its internal \u003cstrong\u003eknife-edge baffles\u003c\/strong\u003e trap stray light, significantly increasing image contrast by reducing internal reflections and glare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the exact spacing provided by the Daystar Quark to T adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter adds exactly \u003cstrong\u003e10mm\u003c\/strong\u003e of length, measured from flange to flange. The total physical length of the adapter is 19mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the Interference Eliminator with the Daystar Quark to T adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile not required for the adapter to function, the Daystar Interference Eliminator is highly recommended. This accessory threads in-line and is designed to remove \"Newton's rings,\" a common banding artifact seen in highly coherent, monochromatic light from a Quark. The adapter is fully compatible with it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm using a ZWO ASI174MM camera with my Quark. Will this Daystar adapter connect them securely?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The ZWO ASI174MM, like most dedicated \u003ca href=\"\/en-int\/collections\/cameras\"\u003eastronomy cameras\u003c\/a\u003e, uses standard T-threads (M42x0.75). This Daystar adapter will thread directly onto your camera and into the Quark for a secure, rigid imaging train ideal for high-frame-rate solar imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Daystar adapter help reduce reflections when imaging bright solar prominences?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. That is one of its primary design features. The internal knife-edge baffles are specifically engineered to trap off-axis light and internal reflections, which is critical for maintaining high contrast and seeing faint details in prominences against the blackness of space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Camera\u003c\/td\u003e\n\u003ctd\u003eT-Thread (M42x0.75) Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Quark\u003c\/td\u003e\n\u003ctd\u003eQuark Thread (1 3\/8-24 UN Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength (Flange to Flange)\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.06 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Baffling\u003c\/td\u003e\n\u003ctd\u003eKnife-Edge Baffles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eAnodized Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eThread converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Quark to T adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457554717,"sku":"DAY-SZ1T","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SZ1T-1__89799.1597174983.1280.1280.jpg?v=1684342423"},{"product_id":"daystar-quark-to-c-and-quark-to-t-adapter-bundle","title":"Daystar Quark to C and Quark to T adapter Bundle","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIncludes both C-thread and T-thread adapters for Daystar Quark filters\u003c\/li\u003e\n\u003cli\u003eProvides a rigid, direct-thread connection to eliminate camera tilt and flexure\u003c\/li\u003e\n\u003cli\u003eFeatures internal knife-edge baffles for superior contrast\u003c\/li\u003e\n\u003cli\u003eCompatible with the Daystar Interference Eliminator to reduce Newton's rings\u003c\/li\u003e\n\u003cli\u003eFinished in durable, non-reflective anodized black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark to C and Quark to T adapter Bundle\u003c\/h2\u003e\n\u003cp\u003eFor solar imagers using multiple cameras, the Daystar Quark to C and Quark to \u003ca href=\"\/en-int\/collections\/imaging-adapters\"\u003eT adapter\u003c\/a\u003e Bundle creates a secure, direct-thread connection for both common imaging systems. This two-adapter set is a cost-effective solution that eliminates flexure by rigidly mounting your C-thread or T-thread camera directly to the Daystar Quark, ensuring perfect and repeatable optical alignment for every session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Camera Mounting: The Daystar C-Thread and T-Thread Solution\u003c\/h3\u003e\n\u003cp\u003eThis bundle provides both of Daystar's essential Quark adapters, allowing you to seamlessly switch between different imaging cameras without changing your setup. Whether you are using a dedicated \u003ca href=\"\/en-int\/collections\/planetary-cameras\"\u003eplanetary camera\u003c\/a\u003e with C-threads or a DSLR\/mirrorless camera with a standard T-ring, these adapters form a solid, threaded connection that is far more stable than a simple nosepiece and thumbscrew arrangement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptical Path Optimization: Knife-Edge Baffles for Maximum Contrast\u003c\/h3\u003e\n\u003cp\u003eInside each adapter, knife-edge baffles are machined to trap stray light and prevent internal reflections from degrading your image. This design detail is critical in high-contrast solar imaging, helping to darken the sky background and reveal finer details in prominences and surface features. The adapters are also fully compatible with the Daystar Interference Eliminator, which is recommended for mitigating Newton's rings that can appear with some camera and sensor combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of the Daystar Quark adapter bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is versatility and value. This bundle includes both the C-thread and T-thread adapters, allowing you to rigidly connect nearly any type of \u003ca href=\"\/en-int\/collections\/cameras\"\u003eastronomy camera\u003c\/a\u003e to your Daystar Quark. Buying the bundle is more cost-effective than purchasing each adapter separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich cameras can I connect to my Quark with this Daystar adapter bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis bundle allows you to connect two main classes of cameras:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eC-thread Cameras:\u003c\/strong\u003e Cameras with a C-mount (1-32 UN) thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT-thread Cameras:\u003c\/strong\u003e Any camera that can be fitted with a standard T-ring (M42x0.75 thread), such as DSLRs, mirrorless cameras, and many larger-format astronomy cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI use a ZWO ASI camera with a C-mount and a DSLR with a T-ring for solar imaging. Will this Daystar bundle work for both?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this bundle is the perfect solution for your exact situation. You can use the C-thread adapter for your ZWO camera and the T-thread adapter for your DSLR with its T-ring, ensuring a solid, threaded connection for both of your imaging setups with your Daystar Quark.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do the 'knife-edge baffles' inside the Daystar Quark adapters do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eKnife-edge baffles\u003c\/strong\u003e are a series of sharp, concentric rings machined into the adapter's interior. Their purpose is to catch and absorb off-axis stray light that enters the adapter, preventing it from reflecting off the internal walls and reaching the camera sensor. This significantly improves image contrast, which is crucial for observing subtle solar features.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm seeing a strange banding pattern in my solar images with my Daystar Quark. Will these adapters help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe banding pattern you're describing is likely \"Newton's rings,\" an interference pattern. While these adapters themselves don't eliminate it, they are designed to be fully compatible with the \u003cstrong\u003eDaystar Interference Eliminator\u003c\/strong\u003e. Use the Interference Eliminator in your imaging train to remove this specific artifact.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do these Daystar adapters improve the rigidity of my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese adapters create a direct, metal-on-metal threaded connection between the Daystar Quark and your camera body or T-ring. This is much more secure than inserting a 1.25\" nosepiece into a holder and securing it with a thumbscrew, a method prone to slight tilt or \"slop\" that can ruin focus and alignment across the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter 1\u003c\/td\u003e\n\u003ctd\u003eConnects Daystar Quark to C-thread (1\"-32 TPI) cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter 2\u003c\/td\u003e\n\u003ctd\u003eConnects Daystar Quark to T-thread (M42x0.75) cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Baffling\u003c\/td\u003e\n\u003ctd\u003eKnife-edge baffles for stray light suppression\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial \/ Finish\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eDaystar Interference Eliminator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eThread converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003e1 3\/8-24 UN Male (Quark thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (added light path)\u003c\/td\u003e\n\u003ctd\u003e10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e19 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e59 g (both adapters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark to C-thread Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuark to T-thread Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457620253,"sku":"DAY-SZ1CT","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SZ1CT__22410.1597174816.1280.1280.jpg?v=1684342428"},{"product_id":"daystar-quark-2-1-25-male-silver-snout-pack-for-camera-quark-or-scout","title":"Daystar Quark 2\"\/1.25\" Male Silver Snout Pack for Camera Quark or Scout","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides both 1.25\" and 2\" male snouts for universal focuser compatibility\u003c\/li\u003e\n\u003cli\u003eScrews onto the front of a Daystar Classic Quark or Camera Quark\u003c\/li\u003e\n\u003cli\u003eSecurely screws onto the front threads of the Quark body\u003c\/li\u003e\n\u003cli\u003eEnables use of your solar imager on any standard astronomical telescope\u003c\/li\u003e\n\u003cli\u003eDurable, machined silver construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quark 2\"\/1.25\" Male Silver Snout Pack for Camera Quark or Scout\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quark 2\"\/1.25\" Male Silver Snout Pack provides essential telescope compatibility for your Camera Quark or Scout, including one SZ41 1.25\" snout and one SZ42 2\" snout. This pack is the required accessory to mount your Daystar solar imager onto any astronomical telescope, allowing you to switch between different instruments seamlessly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eConnect Your Quark to Any 1.25\" or 2\" Focuser\u003c\/h3\u003e\n\u003cp\u003eThis snout pack is the dedicated interface for mounting a Daystar Camera Quark or Scout solar observer onto a standard astronomical telescope. By threading directly onto the front of the Quark body, these snouts create a secure, male barrel that inserts firmly into any 1.25\" or 2\" \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e drawtube.\u003c\/p\u003e\n\u003cp\u003eThe pack includes both the SZ41 1.25\" snout and the SZ42 2\" snout, ensuring you have the correct size for any telescope in your collection, across \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e with 1.25\" or 2\" focusers. This eliminates the need for separate adapters and guarantees a solid mechanical connection for solar imaging and observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Daystar Quark 2\"\/1.25\" Snout Pack?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis pack allows you to connect a Daystar \u003cstrong\u003eCamera Quark\u003c\/strong\u003e or \u003cstrong\u003eScout\u003c\/strong\u003e model to a standard astronomical telescope focuser. It includes both 1.25\" and 2\" male snouts to fit virtually any telescope, providing the necessary mechanical interface for solar imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Daystar Quark Snout Pack work with the original eyepiece Quark?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. These snouts screw onto the front of a Classic Quark or a Camera Quark.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install a snout from the Daystar Quark Snout Pack?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is simple. You select the correct size snout (1.25\" or 2\") for your telescope's focuser and screw it directly onto the front female threads of your Camera Quark or Scout body until it is snug.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a small 80mm refractor with a 1.25\" focuser. Which piece from the Daystar Quark Snout Pack do I use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor your 80mm refractor, you will use the \u003cstrong\u003eSZ41 1.25\" male snout\u003c\/strong\u003e. It threads onto your Camera Quark and inserts directly into your telescope's 1.25\" focuser, providing a secure connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I upgrade to a Celestron EdgeHD 8\" with a 2\" focuser, can I still use my Camera Quark with this Daystar Quark Snout Pack?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot recommended. The Quark is rated for F\/4 to F\/9 refractor telescopes and is not suited for SCT or dob application. The SZ42 2\" snout lets you use a 2\" refractor focuser; on instruments of 80mm aperture or more, use an Energy Rejection Filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Daystar Quark Snout Pack include both sizes, or do I have to choose one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe pack includes both. You receive one 1.25\" snout and one 2\" snout, so you are prepared for any standard telescope focuser without needing to make a separate purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eNosepiece (snout pack)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" barrel Male (SZ41) and 2\" barrel Male (SZ42)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSZ41 1.25\" male snout\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSZ42 2\" male snout\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457718557,"sku":"DAY-SZ12","price":111.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SZ12__94940.1597174676.1280.1280.jpg?v=1684342429"},{"product_id":"daystar-nikon-lens-to-quark-adapter","title":"Daystar Nikon Lens to Quark Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts Nikon-mount lenses to Daystar Quark Solar Filters\u003c\/li\u003e\n\u003cli\u003eEnables H-alpha solar viewing and imaging with telephoto lenses\u003c\/li\u003e\n\u003cli\u003eAllows lens's zoom feature to be used for variable magnification\u003c\/li\u003e\n\u003cli\u003eIntegrated mounting foot with tripod threads and Vixen-style dovetail\u003c\/li\u003e\n\u003cli\u003eFully manual adapter with no electronic pass-through\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Nikon Lens to Quark Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Nikon Lens to Quark Adapter directly connects your Nikon-mount SLR or DSLR lens to a Daystar QUARK \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e. This single component converts your existing camera optics into a dedicated Hydrogen-Alpha \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescope\u003c\/a\u003e, enabling you to use either an \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e for direct viewing or a camera for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eTransform Your Nikon Lens into a Hydrogen-Alpha Solar Telescope\u003c\/h3\u003e\n\u003cp\u003eThis adapter unlocks the solar imaging potential of your \u003ca href=\"\/en-int\/collections\/camera-lenses-and-adapters\"\u003etelephoto lenses\u003c\/a\u003e. By integrating a Daystar QUARK filter (required, sold separately) with your Nikon lens, you can observe and capture detailed views of the sun's chromosphere. The zoom function of your lens becomes your magnification control, allowing you to go from wide-field views of the full solar disk to high-power close-ups of prominences and surface details instantly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVersatile Mounting for Tripods and Telescope Mounts\u003c\/h3\u003e\n\u003cp\u003eThe adapter includes an integrated, reversible mounting foot designed for stability and flexibility. One side provides standard threaded holes for direct attachment to photographic tripods, while the other side features a \u003ca href=\"\/en-int\/collections\/dovetail-plates\"\u003edovetail bar\u003c\/a\u003e compatible with common astronomical mounts. This dual-purpose design ensures you can mount your lens-based solar telescope securely on virtually any support platform you own.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUnderstanding Lens Compatibility and Manual Operation\u003c\/h3\u003e\n\u003cp\u003eThis is a fully manual adapter with no electronic pass-through, meaning you will control focus and aperture directly on the lens itself. While designed to work with a wide variety of Nikon-style lenses, focus and physical clearance are not guaranteed for every model. On lenses above 80mm in aperture, use a red, orange or yellow colored glass front filter (such as Cokin or Hoya) to manage heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides the Daystar Nikon Lens to Quark Adapter to view the sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need three key components: a \u003cstrong\u003eNikon-mount camera lens\u003c\/strong\u003e, a classic (eyepiece) Daystar QUARK solar filter, and either an \u003cstrong\u003eeyepiece\u003c\/strong\u003e for visual use or a \u003cstrong\u003ecamera body\u003c\/strong\u003e for imaging. You will also need a stable tripod or astronomical mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use autofocus or change the aperture with my camera body using this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The adapter is a purely mechanical connection and does not have any electronic contacts. All focus adjustments and aperture changes must be made manually using the rings on the lens itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the zoom on my Nikon lens affect my view of the sun with the Quark adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe zoom feature acts as your variable magnification. Zooming out provides a wide-field view, potentially showing the entire solar disk, which is ideal for observing full-disk phenomena and framing prominences. Zooming in increases magnification for detailed, high-power views of specific features like sunspots, filaments, and plages.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a Nikon 70-200mm lens. How would I use it with the Daystar adapter to see solar prominences?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAfter attaching your 70-200mm lens to the Quark via this adapter, you would start at the 70mm setting to locate and center the sun. Then, you would zoom in towards 200mm to increase the image scale, making the delicate prominences along the sun's limb larger and more detailed. All focusing would be done manually with the lens's focus ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Daystar adapter work with my vintage manual-focus Nikon 300mm AI-s lens on a Vixen-style mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent use case. Since the adapter is fully manual, it's perfectly suited for older manual-focus lenses like the Nikon AI-s series. The integrated Vixen-style dovetail on the adapter's foot allows you to mount the entire assembly directly onto your \u003ca href=\"\/en-int\/collections\/equatorial-mounts\"\u003eequatorial mount\u003c\/a\u003e for stable, tracked solar viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does Daystar recommend a front filter for some lenses used with the Nikon Quark adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor lenses above 80mm in aperture, a significant amount of heat and light energy is concentrated on the internal QUARK filter. To reduce this heat load and improve performance, place an inexpensive colored glass filter (like a red, orange, or yellow photographic filter) on the front of the lens to act as a basic energy rejection filter (ERF).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eLens adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003eNikon F lens bayonet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003elens adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ereversible lens foot (1\/4-20 tripod holes and Vixen style dovetail)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003efocal extender spacer ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457947933,"sku":"DAY-DSZTNA","price":559.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Nikon-Lens-Quark-Adapter__05037.1597174347.1280.1280.jpg?v=1684342427"},{"product_id":"daystar-canon-lens-to-quark-adapter","title":"Daystar Canon Lens to Quark Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts Canon EF-mount lenses for use with Daystar Quark solar filters\u003c\/li\u003e\n\u003cli\u003eTurns a telephoto lens into a portable Hydrogen-alpha solar telescope\u003c\/li\u003e\n\u003cli\u003eAllows use of lens zoom to frame full solar disks or high-magnification details\u003c\/li\u003e\n\u003cli\u003eIncludes a reversible foot with 1\/4-20 tripod threads and a Vixen-style dovetail\u003c\/li\u003e\n\u003cli\u003eEnables solar viewing and imaging with a standard eyepiece or camera\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Canon Lens to Quark Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Canon Lens to Quark Adapter transforms your existing Canon EF-mount lenses into a dedicated Hydrogen-alpha \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescope\u003c\/a\u003e. It includes a reversible mounting foot with standard 1\/4-20 \u003ca href=\"\/en-int\/collections\/tripods-and-piers\"\u003etripod\u003c\/a\u003e threads and a Vixen-style dovetail, providing a secure platform for lenses over 80mm in aperture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAdapting Lenses Over 80mm: Turn Canon Glass into an H-Alpha Scope\u003c\/h3\u003e\n\u003cp\u003eConnect a Daystar Quark (required, sold separately) to this adapter, and your Canon \u003ca href=\"\/en-int\/collections\/camera-lenses-and-adapters\"\u003etelephoto lens\u003c\/a\u003e becomes your primary solar optic. This setup allows you to use your lens's zoom function to go from wide, full-disk views of the sun to high-magnification close-ups of prominences and surface detail without swapping hardware. For lenses with apertures larger than 80mm, use a front-mounted red, orange, or yellow glass filter to reduce the thermal load on the internal Quark assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFlexible Mounting: 1\/4-20 Threads and a Vixen-Style Dovetail\u003c\/h3\u003e\n\u003cp\u003eAn integrated, reversible mounting foot gives you two industry-standard connection options for your solar setup. Use the 1\/4-20 threaded holes to attach your lens and Quark to any standard photo tripod for a lightweight, grab-and-go system. For added stability, flip the foot to use the Vixen-style \u003ca href=\"\/en-int\/collections\/dovetail-plates\"\u003edovetail bar\u003c\/a\u003e on any compatible astronomical mount. An included focal extender spacer ring helps ensure your lens can achieve focus, increasing compatibility across a wide range of Canon-style lenses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDaystar Adapter vs. a Dedicated Solar Telescope: Portability and Zoom\u003c\/h3\u003e\n\u003cp\u003eWhile a dedicated solar telescope offers an integrated, optimized system, the Daystar adapter creates a system with unmatched portability and flexibility for imagers who already own high-quality camera lenses.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated Solar Scope Advantage:\u003c\/strong\u003e A purpose-built solar telescope is a single, thermally stable unit that requires no assembly of optical components and is permanently collimated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaystar Adapter Advantage:\u003c\/strong\u003e This system is incredibly compact, breaking down to fit in a standard camera bag. It leverages the investment you've already made in telephoto lenses and lets you use their zoom capabilities to frame solar features dynamically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Trade-off:\u003c\/strong\u003e This is a fully manual system. The adapter provides no electronic pass-through, meaning you must manually set your lens's focus and aperture. Autofocus and electronic aperture control are not supported.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides the Daystar Canon Lens to Quark Adapter to view the sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt a minimum, you will need a \u003cstrong\u003eDaystar Quark\u003c\/strong\u003e (H-alpha or other model), a \u003cstrong\u003eCanon-mount SLR\/DSLR lens\u003c\/strong\u003e, and an \u003cstrong\u003eeyepiece\u003c\/strong\u003e or \u003cstrong\u003ecamera\u003c\/strong\u003e. You will also need a stable tripod or astronomical mount to hold the assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use autofocus and change the aperture with the Daystar Canon Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Daystar Canon Lens to Quark Adapter has \u003cstrong\u003eno electronic contacts\u003c\/strong\u003e and does not pass power or data to the lens. All focus and aperture adjustments must be made manually using the rings on the lens itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a front filter recommended for my Canon 400mm lens with the Daystar Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor any lens with an aperture over 80mm, use a front-mounted color filter (red, orange, or yellow) to act as an energy rejection filter (ERF). This reduces the amount of heat entering the Quark, protecting its delicate internal components and ensuring stable on-band performance during long observing sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Daystar Canon to Quark Adapter work with every Canon lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for broad compatibility, Daystar does not guarantee focus and clearance for 100% of Canon-style lenses. An included focal extender ring helps achieve focus with many models, but functionality can vary depending on the specific optical design of the lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I mount my Canon 70-200mm lens and Quark using the Daystar Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar adapter includes a built-in, reversible mounting foot. You can either attach it directly to a photo tripod using the standard \u003cstrong\u003e1\/4-20 threaded holes\u003c\/strong\u003e or mount it to an astronomical mount using the integrated \u003cstrong\u003eVixen-style dovetail bar\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use an eyepiece with the Daystar Canon Lens to Quark Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Once your Canon lens and Quark are connected via the adapter, the Quark functions just as it would on a telescope. You can insert a standard 1.25\" \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e directly into the Quark for visual observation or attach a camera for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eLens adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003eCanon EF lens bayonet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Canon Lens to Quark Adapter (with Reversible Foot (1\/4-20 \u0026amp; Vixen Dovetail))\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFocal Extender Spacer Ring\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967457980701,"sku":"DAY-DSZTCA","price":559.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Canon-Lens-Quark-Adapter__17460.1597174206.1280.1280.jpg?v=1684342428"},{"product_id":"daystar-imaging-0-5x-0-33x-focal-reducer-2-to-t-2m","title":"Daystar Imaging 0.5x\/0.33X Focal Reducer - 2\" to T-2(M)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual focal reduction: 0.5x native and 0.33x with included extension\u003c\/li\u003e\n\u003cli\u003eAdapts 2\" focusers to T-mount (M42x0.75) cameras\u003c\/li\u003e\n\u003cli\u003eIncludes a 20mm T-threaded extension tube for maximum reduction\u003c\/li\u003e\n\u003cli\u003eEnables full-disk imaging with Daystar SR127 scopes and 2\/3\" sensors\u003c\/li\u003e\n\u003cli\u003eOptimized for the Daystar ecosystem of Quark, Ion, and Quantum solar filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Imaging 0.5x\/0.33X Focal Reducer - 2\" to T-2(M)\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Imaging 0.5x\/0.33X Focal Reducer adapts 2\" \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocusers\u003c\/a\u003e to T-mount cameras, providing two distinct reduction factors to frame the full solar disk with your Daystar filter system. Natively, it delivers a 0.5x reduction, and with the included 20mm T-extension tube, it achieves a powerful 0.33x reduction for smaller sensors or longer focal length solar scopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDual Reduction Ratios: 0.5x and 0.33x for Framing Flexibility\u003c\/h3\u003e\n\u003cp\u003eThis reducer's primary function is to shorten your telescope's effective focal length, widening the field of view to fit the entire sun onto your camera sensor. By connecting your T-mount camera directly to the reducer, you get a 0.5x reduction. For an even wider field, inserting the included 20mm T-threaded extension tube between the reducer and your camera increases the reduction to 0.33x, which is ideal for long focal length instruments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5x Native Reduction:\u003c\/strong\u003e Achieved by threading a \u003ca href=\"\/en-int\/collections\/imaging-adapters\"\u003eT-ring\u003c\/a\u003e or camera directly to the reducer body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.33x Extended Reduction:\u003c\/strong\u003e Achieved by adding the included 20mm extension tube into the optical path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional 0.38x Configuration:\u003c\/strong\u003e For an interference-free setup, the reducer can be combined with Daystar's T-thread Interference Eliminator (sold separately) to produce a 0.38x reduction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFull-Disk Solar Imaging: Optimized for Daystar Filters and 2\/3\" Sensors\u003c\/h3\u003e\n\u003cp\u003eDaystar designed this reducer specifically to enable full-disk solar imaging with popular setups like their SR127 telescope paired with 2\/3\" monochrome CCDs. It is a critical component for imagers using sensors such as the ICX625, ICX655, IMX250, and IMX264 who need to capture the sun in a single frame.\u003c\/p\u003e\n\u003cp\u003eIt is important to note that the usable, unvignetted field of view is ultimately limited by the clear aperture of your solar etalon. Daystar Quantum filters, with their larger apertures, will yield a larger usable field than the more compact Quark or Ion series filters when using this reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I get the 0.33x reduction with the Daystar Focal Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo achieve the 0.33x focal reduction, you must use the \u003cstrong\u003eincluded 20mm T-threaded extension tube\u003c\/strong\u003e. Insert this extension between the focal reducer body and your T-mount camera. The increased spacing provides the stronger reduction effect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the 0.5x vs. the 0.33x reduction on the Daystar Reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two options give you framing flexibility. The \u003cstrong\u003e0.5x reduction\u003c\/strong\u003e is ideal for telescopes with shorter focal lengths or cameras with larger sensors where only a moderate field of view increase is needed. The more aggressive \u003cstrong\u003e0.33x reduction\u003c\/strong\u003e is designed for longer focal length telescopes or smaller sensor cameras, ensuring the full solar disk fits within the frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I image the full solar disk with the Daystar Reducer using a Daystar SR127 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, that is a primary design goal for this reducer. The Daystar Imaging Focal Reducer is specified to allow full disk imaging with the \u003cstrong\u003eDaystar SR127 telescope\u003c\/strong\u003e when paired with a \u003cstrong\u003e2\/3\" format monochrome CCD camera\u003c\/strong\u003e. You will likely need to use the 0.33x configuration (with the extension tube) to achieve this.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eThe description for the Daystar Reducer mentions an interference-free 0.38X effect. How is that achieved?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 0.38x reduction is achieved by using the Daystar Reducer in combination with the \u003cstrong\u003eT-thread Interference Eliminator\u003c\/strong\u003e, which is sold separately. This accessory helps manage light path reflections and interference patterns while providing a reduction factor that sits between the two standard configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Daystar 0.5x\/0.33x Reducer work with my Daystar Quark filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is designed to work with all Daystar filter systems, including the \u003cstrong\u003eQuark, Ion, and Quantum\u003c\/strong\u003e series. However, be aware that the usable field of view is limited by the filter's etalon. A Quark or Ion filter will show more vignetting (darkening at the edges) compared to a larger Quantum filter when using this reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat connections does the Daystar Imaging Focal Reducer have?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe reducer has a \u003cstrong\u003e2\" barrel\u003c\/strong\u003e on the telescope side, which inserts into any standard 2\" focuser or \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e. On the camera side, it has standard male \u003cstrong\u003eT-threads (M42x0.75)\u003c\/strong\u003e for direct connection to a camera-specific T-ring or a T-threaded imaging camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eFocal reducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification factor\u003c\/td\u003e\n\u003ctd\u003e0.5x (direct), 0.33x (with 20mm extension tube)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003e2\" barrel Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-side connection\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 (T2) Male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesigned for\u003c\/td\u003e\n\u003ctd\u003eDaystar filter systems; full disk with SR127 and 2\/3\" sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElements\u003c\/td\u003e\n\u003ctd\u003e4 elements in 2 groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear aperture\u003c\/td\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003efocal reducer\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e20mm T extension tube\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967458046237,"sku":"DAY-FR2DT","price":399.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Imaging-Focal-Reducer-FR2DT__08333.1597173979.1280.1280.jpg?v=1684342430"},{"product_id":"daystar-scout-60mm-ds-solar-telescope","title":"Daystar Scout 60mm DS Solar Telescope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Dedicated Solar Telescope\u003c\/li\u003e\n\u003cli\u003eNarrow 'Doublestack' Bandpass\u003c\/li\u003e\n\u003cli\u003eHigh-Contrast Hydrogen-Alpha Views\u003c\/li\u003e\n\u003cli\u003ePrecision Front Helical Focuser\u003c\/li\u003e\n\u003cli\u003eIntegrated Solar Bullet Finder\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Scout 60mm DS Solar Telescope\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Scout 60mm DS Solar Telescope is an all-in-one instrument designed for high-contrast views of the Sun's chromosphere in hydrogen-alpha light. By integrating a 60mm objective with a narrow, double-stack bandpass filter system, this telescope delivers sharp, detailed images of solar prominences, filaments, and plage right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e60mm 'Doublestack' Performance: High-Contrast Prominences and Surface Detail\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Scout 60mm DS is its heated Quark etalon with a narrow, 'doublestack' bandpass for maximum contrast. This design significantly darkens the solar disk, making faint prominences at the limb and intricate filamentary structures on the surface pop with startling clarity. The 60mm aperture gathers enough light for bright, satisfying views for both visual observation and imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Helical Focuser: Zero Slip and Zero Eyepiece Rotation\u003c\/h3\u003e\n\u003cp\u003eThe Scout 60mm DS employs a robust helical \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e at the front of the optical tube for precise, repeatable focusing. Unlike standard Crayford or rack-and-pinion designs, this focuser cannot slip under the weight of an accessory. Critically for imaging, the \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e and camera do not rotate as you focus, ensuring your composition remains exactly where you set it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Dedicated, All-in-One H-Alpha System\u003c\/h3\u003e\n\u003cp\u003eThis telescope is engineered as a complete, dedicated solar instrument. To streamline the design and reduce cost, the internal Quark filter component is a permanent, conjoined part of the optical assembly. This simplifies operation but means the etalon is not interchangeable. For observers wanting to use 2\" eyepieces or attach a camera via a \u003ca href=\"\/en-int\/collections\/imaging-adapters\"\u003eT-adapter\u003c\/a\u003e, optional accessories are required to expand the telescope's native configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eScout 60mm DS vs. Original SS60: An Integrated Quark Design\u003c\/h3\u003e\n\u003cp\u003eThe principal difference between the Scout 60mm DS and the original SS60 platform lies in its integrated design. While the original SS60 allowed for interchangeable Quark optical components, the DS model features a conjoined, non-interchangeable construction. This trade-off allows the Scout 60mm DS to offer double-stack views in a more accessible, all-in-one package without the need to purchase and manage separate components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"doublestack\" performance mean on the Daystar Scout 60mm DS?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAll SS60DS scopes have a narrow, \"doublestack\" bandpass, giving doublestack performance at no extra cost from the telescope's single Quark etalon. The narrower bandpass increases contrast on solar surface details like filaments and plage. The result is a more three-dimensional and detailed view of the chromosphere compared to a single-stack system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the non-rotating helical focuser on the Scout 60mm DS help when imaging a solar flare?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen you are imaging a dynamic event like a solar flare, precise framing is critical. The Scout's helical focuser adjusts focus without turning the attached camera. This means you can fine-tune focus without accidentally rotating the solar limb or the flare out of your camera's field of view, preventing lost data during crucial moments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my existing 2\" eyepieces or a DSLR camera with the Scout 60mm DS?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOut of the box, the Scout 60mm DS is configured for 1.25\" accessories. To use 2\" eyepieces or to attach a camera with a T-adapter, you will need to purchase additional, optional adapters. This allows the base model to be more compact and affordable while offering expandability for advanced users.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy isn't the Quark component on the Scout 60mm DS interchangeable?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quark filter system is permanently integrated into the Scout 60mm DS as a cost-reduction and simplification measure. This \"all-in-one\" design makes the telescope easier to use and more affordable than modular systems, but it means the internal filter cannot be swapped for other wavelengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I safely align the Scout 60mm DS with the sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Scout 60mm DS includes an integrated \"Solar Bullet\" \u003ca href=\"\/en-int\/collections\/finder-scopes\"\u003efinder\u003c\/a\u003e. This device safely projects a small image of the sun onto a white target screen on the back of the finder. To align the telescope, you simply move the tube until the projected solar disk is centered on the screen, ensuring the sun is in the eyepiece's field of view without ever needing to look directly at it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Scout 60mm DS suitable for observing both solar prominences and surface detail?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a primary strength of its narrow 'doublestack' bandpass. The enhanced contrast makes it possible to see bright, detailed prominences erupting from the solar limb and simultaneously observe filaments and plage on the main disk, all within the same view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003eTelescope Only, Bundle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with 4.3x telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e930mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/15.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA weight\u003c\/td\u003e\n\u003ctd\u003e1.33 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail included\u003c\/td\u003e\n\u003ctd\u003eVixen-style foot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e391mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1330 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDAY-SS60DS\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDAY-SS60DSB\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Scout_60_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Telescope Only","offer_id":44967458406685,"sku":"DAY-SS60DS","price":1393.0,"currency_code":"CAD","in_stock":true},{"title":"Bundle","offer_id":44967458472221,"sku":"DAY-SS60DSB","price":1673.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SS60DS-1__03141.1597173356.1280.1280.jpg?v=1684342441"},{"product_id":"daystar-scout-60mm-solar-telescope-chromosphere","title":"Daystar Scout 60mm Solar Telescope Chromosphere","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Aperture\u003c\/li\u003e\n\u003cli\u003eDedicated Hydrogen Alpha Solar Telescope\u003c\/li\u003e\n\u003cli\u003eTargets the Sun's Chromosphere\u003c\/li\u003e\n\u003cli\u003eHelical Front-Focuser\u003c\/li\u003e\n\u003cli\u003eSolar Bullet Projection Finder\u003c\/li\u003e\n\u003cli\u003e16mm Clear Eyepiece Aperture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eDaystar Scout 60mm Solar Telescope Chromosphere\u003c\/h2\u003e\n      \u003cp\u003eThe Daystar Scout 60mm Solar Telescope is a purpose-built instrument for observing the sun's dynamic chromosphere in high-contrast Hydrogen Alpha. Its 60mm objective is fully integrated with Daystar's filtration technology, and the optical path terminates in a 16mm clear aperture for use with standard 1.25\" \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepieces\u003c\/a\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eDedicated 60mm Optics for High-Contrast Chromosphere Views\u003c\/h3\u003e\n      \u003cp\u003eUnlike a simple front-mounted filter, the Scout 60mm is an integrated solar telescope designed from the ground up for H-alpha viewing. The 60mm aperture provides the resolution needed to resolve fine details like spicules at the solar limb and the intricate magnetic structure of plages on the solar disk. Because it is a dedicated system, all optical components are optimized for the single, narrow wavelength of Hydrogen Alpha light, delivering superior contrast for viewing filaments and prominences.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003ePrecision Focusing and Safe Solar Alignment\u003c\/h3\u003e\n      \u003cp\u003eThe Scout 60mm incorporates features designed for reliability and safety during solar observation. The helical front-focuser provides precise adjustment without slipping or rotating your eyepiece, which is critical for maintaining orientation when sketching or imaging. For alignment, the integrated Solar Bullet finder safely projects a small image of the sun onto a rear-facing white screen, allowing you to center the sun in the field of view without looking through the finder itself.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eNon-Slip Helical Focuser:\u003c\/strong\u003e Maintains focus position and prevents the eyepiece or camera from rotating during adjustment.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSolar Bullet Finder:\u003c\/strong\u003e A zero-power projection finder that offers a safe and intuitive way to locate and center the sun.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eImaging and Accessory Note:\u003c\/strong\u003e Attaching a camera via a \u003ca href=\"\/en-int\/collections\/imaging-adapters\"\u003eT-adapter\u003c\/a\u003e or using 2\" eyepieces requires optional, separately purchased accessories to reach focus.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I see with the Daystar Scout 60mm Solar Telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Scout 60mm is designed to view the \u003cstrong\u003eSun's chromosphere\u003c\/strong\u003e in Hydrogen Alpha light. You can observe dynamic features such as \u003cstrong\u003esolar prominences\u003c\/strong\u003e (eruptions on the limb), \u003cstrong\u003efilaments\u003c\/strong\u003e (prominences seen against the solar disk), \u003cstrong\u003eplages\u003c\/strong\u003e (bright active regions), and \u003cstrong\u003espicules\u003c\/strong\u003e (jets of plasma at the edge).\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the \"Solar Bullet\" finder on the Scout 60mm work?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Solar Bullet is a safe, zero-power projection finder. It has a small pinhole at the front that projects a tiny image of the sun onto a small, white translucent screen at the back. To use it, you simply move the telescope until the bright dot is centered on the screen. This ensures the sun is in your eyepiece's field of view without you ever having to look directly at it through a \u003ca href=\"\/en-int\/collections\/finder-scopes\"\u003efinder scope\u003c\/a\u003e.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the helical focuser on the Scout 60mm good for imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the helical \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e is well-suited for basic solar imaging. Its main advantages are precision and stability. Because it does not rotate the eyepiece or camera during adjustment, it's easier to maintain the framing of your target. The non-slip design also ensures that once you achieve critical focus, it holds its position securely. Note that you will need optional adapters to attach a camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my 2\" eyepieces or a DSLR camera with the Scout 60mm?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eOut of the box, the Scout 60mm is configured for 1.25\" eyepieces. Using larger 2\" eyepieces or attaching a camera with a standard T-adapter will require \u003cstrong\u003eadditional, optional accessories\u003c\/strong\u003e from Daystar Filters to achieve the correct spacing and reach focus.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Scout 60mm show solar flares during an active region transit?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the Scout 60mm is capable of showing solar flares. Flares appear as intensely bright, temporary brightenings within an active region (plage). The high contrast provided by the dedicated H-alpha system makes these events stand out clearly against the surrounding chromosphere, especially during periods of high solar activity.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the view through the Scout 60mm compare to a white-light filter on a standard 60mm refractor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe difference is dramatic. A white-light filter shows the Sun's \u003cstrong\u003ephotosphere\u003c\/strong\u003e—the visible surface—revealing only sunspots and granulation. The Daystar Scout 60mm shows the \u003cstrong\u003echromosphere\u003c\/strong\u003e, a layer of atmosphere above the photosphere. This allows you to see the dynamic, energetic phenomena like prominences, filaments, and flares that are completely invisible in white light.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated Hydrogen Alpha Solar Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTarget Layer\u003c\/td\u003e\n\u003ctd\u003eChromosphere\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eHelical Front-Focus, non-rotating\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFinder\u003c\/td\u003e\n\u003ctd\u003eSolar Bullet Projection Finder\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eEyepiece Aperture\u003c\/td\u003e\n\u003ctd\u003e16mm (for 1.25\" eyepieces)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with 4.3x telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e930mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/15.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA weight\u003c\/td\u003e\n\u003ctd\u003e1.33 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail included\u003c\/td\u003e\n\u003ctd\u003eVixen-style foot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e391mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1330 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eDaystar Scout 60mm Solar Telescope with environmental hard case, Solar Bullet finder, Vixen \/ photo style mounting foot and 110-240VAC wall adapter\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Scout_60_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967458603293,"sku":"DAY-SS60C","price":2233.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Scout-60mm-Solar-Telescope-1__09145.1597173140.1280.1280.jpg?v=1684342449"},{"product_id":"daystar-scout-60mm-solar-telescope-prominence","title":"Daystar Scout 60mm Solar Telescope Prominence","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e60mm Aperture\u003c\/li\u003e\n\u003cli\u003eDedicated Hydrogen Alpha Solar Telescope\u003c\/li\u003e\n\u003cli\u003e\"Prominence\" Model for High-Contrast Limb Detail\u003c\/li\u003e\n\u003cli\u003eHelical Front-Focuser\u003c\/li\u003e\n\u003cli\u003eIntegrated Solar Bullet Finder\u003c\/li\u003e\n\u003cli\u003e16mm Clear Eyepiece Aperture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Scout 60mm Solar Telescope - Prominence\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Scout 60mm Solar Telescope is a dedicated Hydrogen Alpha instrument engineered for high-contrast views of the sun's dynamic limb. Its 60mm objective gathers ample light for bright, detailed images of erupting prominences, and the \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e side has a 16mm clear aperture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Dedicated 60mm Optic for Hydrogen-Alpha Prominences\u003c\/h3\u003e\n\u003cp\u003eUnlike addon filters, the Scout 60mm is a complete, grab-and-go solar telescope built around an interchangeable Daystar Quark H-alpha filter. The Quark can be moved to other instruments for different magnifications. As a \"Prominence\" model, this scope is configured to deliver the brightest, highest-contrast views of solar prominences—the massive arches of plasma that erupt from the solar limb.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUser-Focused Mechanics: 16mm Aperture and Non-Rotating Helical Focuser\u003c\/h3\u003e\n\u003cp\u003eThe Scout 60mm avoids common frustrations found in entry-level scopes with its precision helical front-focuser. This mechanism achieves sharp focus without slipping or rotating your eyepiece, which is critical for keeping a \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e in a comfortable position or maintaining the orientation of a camera. The eyepiece side has a 16mm clear aperture; 25mm to 40mm Plössl eyepieces are recommended; Naglers, zooms, Radians and other \"fast\" eyepieces typically perform very badly on DayStar applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSafe Solar Targeting with the Solar Bullet Finder\u003c\/h3\u003e\n\u003cp\u003eSafely aiming a telescope at the sun is the first and most critical step in solar observing. The Scout 60mm incorporates Daystar's \"Solar Bullet\" finder, a simple but highly effective projection-based system. This finder projects a small point of light onto a white target screen; when the point is centered on the target, the sun is in the eyepiece's field of view, eliminating any need to look directly through a \u003ca href=\"\/en-int\/collections\/finder-scopes\"\u003efinder scope\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eScout 60mm Prominence vs. Chromosphere Models: What's the Trade-off?\u003c\/h3\u003e\n\u003cp\u003eDaystar offers solar telescopes in two main configurations, and choosing the right one depends on your primary observing target. This Scout 60mm is a Prominence model, which has a slightly wider bandpass.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminence Models (This Scope):\u003c\/strong\u003e Excel at showing the fainter, more delicate structures of solar prominences against the blackness of space. The view is typically brighter, making these features stand out dramatically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromosphere Models:\u003c\/strong\u003e Use a narrower bandpass to increase contrast on the sun's surface (the chromosphere). This makes them superior for resolving fine details in plages, filaments, and spicules, but prominences may appear slightly dimmer than in a dedicated prominence scope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Daystar Scout 60mm Prominence telescope best for viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis telescope is specifically designed to provide the best possible views of \u003cstrong\u003esolar prominences\u003c\/strong\u003e. These are the beautiful, fiery arches and loops of gas that erupt from the edge (limb) of the Sun. While it will also show surface details like sunspots and some filaments, its strength lies in high-contrast views of limb activity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I find the Sun safely with the Scout 60mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Scout 60mm comes equipped with an integrated \u003cstrong\u003eSolar Bullet finder\u003c\/strong\u003e. This is a projection finder, so you do not look through it. You simply move the telescope until the small dot of light it projects is centered on the white target screen. This is a completely safe and intuitive way to align the telescope with the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" eyepieces or a DSLR camera with the Scout 60mm Solar Telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOut of the box, the Scout 60mm is designed for 1.25\" eyepieces. Using 2\" eyepieces or attaching a camera via a \u003ca href=\"\/en-int\/collections\/imaging-adapters\"\u003eT-adapter\u003c\/a\u003e \u003cstrong\u003erequires optional, additional accessories\u003c\/strong\u003e to achieve focus and proper connection. You will need to purchase these adapters separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this \"Prominence\" model and a \"Chromosphere\" model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe difference is in the bandpass of the internal H-alpha filter. The \u003cstrong\u003eProminence model\u003c\/strong\u003e has a slightly wider bandpass for brighter, higher-contrast views of solar prominences on the limb. A \u003cstrong\u003eChromosphere model\u003c\/strong\u003e has a narrower bandpass, which increases contrast for details on the Sun's surface, like filaments and plages, but makes prominences appear dimmer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAs a beginner to solar, what kind of detail can I expect to see on a typical solar prominence with the Scout 60mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the Scout 60mm Prominence telescope, you can expect to see distinct shapes and structures in solar prominences. On an active day, you will be able to distinguish between different types, such as large, stable hedgerow prominences and more dynamic, detached eruptive prominences. You will see them as bright, reddish structures set against the black background of space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Scout 60mm perform on a lightweight alt-az mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Scout 60mm is an excellent match for a lightweight, grab-and-go \u003ca href=\"\/en-int\/collections\/alt-azimuth-mounts\"\u003ealt-azimuth mount\u003c\/a\u003e like a Vixen Porta II or a Sky-Watcher AZ-GTe. Its small size and low weight make it very stable on such platforms, creating a highly portable setup for quick solar observing sessions from your backyard or a public outreach event.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated Hydrogen Alpha Solar Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eProminence\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eHelical Front-Focus, Non-Rotating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinder\u003c\/td\u003e\n\u003ctd\u003eIntegrated Solar Bullet Finder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Eyepiece Aperture\u003c\/td\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with 4.3x telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e930mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/15.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA weight\u003c\/td\u003e\n\u003ctd\u003e1.33 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail included\u003c\/td\u003e\n\u003ctd\u003eVixen-style foot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e391mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1330 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eScout 60mm Solar Telescope with Environmental Hard Case, Solar Bullet Finder, Vixen\/Photo Style Mounting Foot and 110-240VAC Wall Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Scout_60_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967458668829,"sku":"DAY-SS60P","price":2233.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Scout-60mm-Solar-Telescope-1__64897.1597173089.1280.1280.jpg?v=1684342455"},{"product_id":"daystar-scout-80mm-solar-telescope-chromosphere","title":"Daystar Scout 80mm Solar Telescope Chromosphere","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture Dedicated Solar Telescope\u003c\/li\u003e\n\u003cli\u003eOptimized for Chromosphere (Hydrogen-Alpha) Viewing\u003c\/li\u003e\n\u003cli\u003eIntegrated Etalon and Blocking Filter System\u003c\/li\u003e\n\u003cli\u003eRobust, Grab-and-Go Physical Design\u003c\/li\u003e\n\u003cli\u003eIncludes Vixen-style Dovetail Mounting Foot\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Scout 80mm Solar Telescope Chromosphere\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Scout 80mm \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003eSolar Telescope\u003c\/a\u003e is a dedicated Hydrogen-alpha instrument designed for high-contrast, detailed views of the Sun's chromosphere. By integrating Daystar's renowned filter technology directly into an 80mm \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e optical tube, the Scout provides a safe, simple, and powerful solution for observing solar prominences, filaments, and active regions right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAn 80mm Window to the Active Chromosphere\u003c\/h3\u003e\n\u003cp\u003eThe 80mm aperture strikes an ideal balance between resolution and portability for solar astronomy. It gathers significantly more light than smaller 60mm scopes, resolving finer details in sunspot umbrae and the delicate, feathery structure of solar prominences erupting from the limb. This aperture is large enough to deliver truly engaging views of solar activity without becoming overly sensitive to atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDedicated Solar Design for Uncompromised Safety\u003c\/h3\u003e\n\u003cp\u003eUnlike component-based \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e systems, the Scout 80mm is a fully integrated telescope where all optical elements are pre-installed and optimized for solar viewing. This dedicated design eliminates the risks of improper filter mounting and ensures all components, from the integrated blocking filter to the internal etalon, work together for maximum safety and image contrast. You never have to worry about component mismatch or unsafe configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Tuning for High-Contrast Solar Detail\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Scout 80mm is a precision heated etalon, the core of Daystar's solar filtering technology. This system allows you to precisely tune the filter's bandpass, letting you 'wing-shift' to observe Doppler-shifted phenomena. This is critical for enhancing the contrast of features moving towards or away from you, such as active region filaments or the base of a solar flare, revealing details that are invisible in a static filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eScout 80mm vs. A Quark Filter: The Integrated Advantage\u003c\/h3\u003e\n\u003cp\u003eA common question is how the Scout 80mm compares to using a Daystar Quark filter in a standard 80mm nighttime refractor. While both can produce excellent images, the Scout offers key advantages in simplicity and optimization.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaystar Quark on a third-party refractor:\u003c\/strong\u003e This setup offers flexibility, allowing you to use your existing telescope. However, you are responsible for ensuring the telescope has the correct focal ratio and requires a separate, correctly sized energy rejection filter (ERF) for safety. Performance can vary depending on the quality of the host telescope's optics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaystar Scout 80mm Telescope:\u003c\/strong\u003e This is a turnkey solution. The optics, focal length, and all safety filters are perfectly matched to the internal etalon from the factory. This guarantees optimal performance and removes the guesswork, providing a reliable, grab-and-go instrument dedicated solely to high-resolution solar observing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features can I see with the Daystar Scout 80mm Chromosphere telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Scout 80mm is designed for observing the Sun in the Hydrogen-alpha wavelength, revealing the dynamic chromosphere. You can expect to see \u003cstrong\u003eprominences\u003c\/strong\u003e (eruptions of gas on the Sun's edge), \u003cstrong\u003efilaments\u003c\/strong\u003e (prominences seen against the brighter solar disk), \u003cstrong\u003eplages\u003c\/strong\u003e (bright active regions), \u003cstrong\u003espicules\u003c\/strong\u003e (jets of gas in the chromosphere), and fine detail within and around \u003cstrong\u003esunspots\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Scout 80mm telescope safe for direct solar viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Scout 80mm is a dedicated, integrated solar telescope. All necessary safety filters, including energy rejection and narrow-bandpass filtering, are built directly into the instrument. It is designed from the ground up for looking at the Sun and is completely safe for visual observation when used as instructed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Scout 80mm for imaging the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The Daystar Scout 80mm is an excellent instrument for solar imaging. Its 80mm aperture provides ample resolution for capturing detailed images of surface features and prominences. You will need a suitable high-frame-rate monochrome \u003ca href=\"\/en-int\/collections\/cameras\"\u003eastronomy camera\u003c\/a\u003e for the best results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the view through the Scout 80mm compare to a smaller 60mm solar scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage of the Scout 80mm over a 60mm scope is its increased \u003cstrong\u003eresolution and brightness\u003c\/strong\u003e. The larger aperture allows it to resolve finer details and provides a brighter image, which is especially beneficial for high-magnification viewing and imaging. Prominences will appear more detailed and surface texture more defined.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Daystar Scout 80mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Scout 80mm is a relatively lightweight and compact refractor. It can be used on a variety of mounts, from a robust photo \u003ca href=\"\/en-int\/collections\/tripods-and-piers\"\u003etripod\u003c\/a\u003e with a fluid head for casual viewing to a light-duty \u003ca href=\"\/en-int\/collections\/equatorial-mounts\"\u003eequatorial mount\u003c\/a\u003e like a Celestron AVX or Sky-Watcher EQM-35 for imaging and tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Scout 80mm handle observing prominences versus surface detail?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe built-in tuning mechanism is key. Prominences are often brightest at the central H-alpha wavelength. To see maximum contrast on surface details like filaments, you may need to tune the etalon slightly off-band. The Scout 80mm's tuner allows you to adjust for the best view of either type of feature during your observing session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget Wavelength\u003c\/td\u003e\n\u003ctd\u003eHydrogen-alpha (Chromosphere)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated Solar Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eHelical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with 4.3x telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e1400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/17.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail included\u003c\/td\u003e\n\u003ctd\u003eVixen-style foot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e512mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube outer diameter\u003c\/td\u003e\n\u003ctd\u003e94mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eScout 80mm telescope with interchangeable Daystar Quark\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eEnvironmental hard case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSolar Bullet finder\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eVixen\/Photo style mounting foot\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e110-240VAC wall adapter (power supply)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Scout_80_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967458767133,"sku":"DAY-SS80C","price":3493.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Scout-80mm-Solar-Telescope-1__88127.1597172870.1280.1280.jpg?v=1684342436"},{"product_id":"daystar-scout-80mm-solar-telescope-prominence","title":"Daystar Scout 80mm Solar Telescope Prominence","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e80mm Aperture Dedicated Solar Telescope\u003c\/li\u003e\n\u003cli\u003eOptimized for High-Contrast Solar Prominences\u003c\/li\u003e\n\u003cli\u003eInternal, USB-Powered Etalon Heater\u003c\/li\u003e\n\u003cli\u003ePrecision Helical Focuser\u003c\/li\u003e\n\u003cli\u003eIncludes Vixen-style Dovetail Mounting Foot\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eDaystar Scout 80mm Solar Telescope Prominence\u003c\/h2\u003e\n      \u003cp\u003eThe Daystar Scout 80mm Solar Telescope is a fully integrated H-alpha instrument engineered specifically for observing the dynamic, ever-changing prominences erupting from the limb of the Sun. This complete solar telescope combines an 80mm doublet objective with Daystar's precision knob tuning, creating a grab-and-go system for high-contrast views of solar activity.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eDedicated 80mm H-alpha Optics for Prominence Views\u003c\/h3\u003e\n      \u003cp\u003eUnlike front-mounted filters, the Scout 80mm is a complete, dedicated solar telescope built around its internal H-alpha filter. The 80mm doublet objective lens is specifically matched to the filter system, ensuring there are no compromises in the optical path for maximum image brightness and contrast on solar features.\u003c\/p\u003e\n      \u003cp\u003eThe \"Prominence\" designation signifies a slightly wider bandpass, which is ideal for making faint, extended prominences stand out vividly against the blackness of space. This design prioritizes light transmission and contrast at the solar limb, revealing delicate structure in loops, arcs, and hedgerow prominences.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n    \n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eUSB-Powered Heater and Knob Tuning for Peak Solar Contrast\u003c\/h3\u003e\n      \u003cp\u003eAt the heart of the Scout 80mm is Daystar's proven heated etalon system, which allows you to precisely tune the filter to the Hydrogen-alpha wavelength. The supplied USB power supply heats the etalon to its operating temperature (any other USB source must be rated for at least 2 amps at 5 volts), and the tuning knob gives you direct control over the image to achieve the highest possible contrast on the specific features you're observing.\u003c\/p\u003e\n      \u003cp\u003eThis knob tuning is critical for adapting to subtle shifts in the H-alpha line caused by Doppler effects in active regions. By slightly shifting the filter's bandpass, you can highlight material moving towards or away from you, enhancing the three-dimensional appearance of complex solar events.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eIntegrated Grab-and-Go Solar Telescope Design\u003c\/h3\u003e\n      \u003cp\u003eThe Scout 80mm eliminates the complexity of assembling a solar telescope from separate components. As a fully integrated system, it is ready for your mount right out of the box, providing a safe, robust, and easy-to-use platform for solar observing. This makes it an ideal choice for outreach events, educational use, or simply for quick sessions when the Sun is active.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHelical Focuser:\u003c\/strong\u003e Offers precise, zero-image-shift focusing, which is critical for high-magnification solar viewing and imaging.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSolar Finder:\u003c\/strong\u003e A built-in solar finder makes aligning the telescope with the Sun safe and intuitive.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMounting Hardware:\u003c\/strong\u003e The telescope includes a reversible Vixen-style dovetail foot with 1\/4-20 \u003ca href=\"\/en-int\/collections\/tripods-and-piers\"\u003etripod\u003c\/a\u003e holes for immediate attachment to a wide range of astronomical mounts.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eScout 80mm Prominence vs. Chromosphere: Choosing Your View\u003c\/h3\u003e\n      \u003cp\u003eDaystar offers the Scout in two configurations, defined by the filter's bandpass. The choice between them depends entirely on your primary observing targets.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eProminence Model (this version):\u003c\/strong\u003e Features a wider bandpass (generally 0.6Å or above). This makes it significantly better for viewing fainter, diffuse prominences against the dark sky. The trade-off is lower contrast on surface details like filaments and plages.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eChromosphere Model:\u003c\/strong\u003e Uses a narrower bandpass (generally 0.5Å or below). This dramatically increases contrast on surface features, making the sun's chromosphere appear like a textured, detailed landscape. It can still see bright prominences, but fainter ones may be lost.\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eFor observers who are most captivated by the explosive and delicate structures at the Sun's edge, the Scout 80mm Prominence model is the superior choice. If your interest lies more with the intricate, evolving patterns on the solar disk itself, the Chromosphere model is the better fit.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main difference between the Daystar Scout 80mm Prominence and Chromosphere models?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe difference is the filter's \u003cstrong\u003ebandpass\u003c\/strong\u003e. The \u003cstrong\u003eProminence model\u003c\/strong\u003e has a wider bandpass (generally 0.6Å or above), which excels at showing faint, detailed solar prominences at the edge of the Sun. The \u003cstrong\u003eChromosphere model\u003c\/strong\u003e has a narrower bandpass (generally 0.5Å or below), which provides much higher contrast for viewing details on the Sun's surface, such as filaments and plages.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Scout 80mm Prominence model show a solar flare?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Scout 80mm Prominence is an excellent instrument for observing solar flares. You will see the event as an intense, localized brightening within an active region. Because this model is optimized for prominences, it will be particularly effective at showing any associated eruptive prominence or material being ejected during the flare event at the solar limb.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Scout 80mm for imaging?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, the Scout 80mm is well-suited for solar imaging with modern high-frame-rate monochrome cameras. The precision helical \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e allows for fine adjustments, and the USB-powered tuning lets you optimize contrast for your camera sensor. The Prominence model is especially good for capturing detailed images and time-lapses of eruptive events at the solar limb.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the Daystar Scout 80mm telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Scout 80mm is relatively lightweight and compact. It can be used on a wide variety of mounts, including:\n    \u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003eA light-to-medium \u003ca href=\"\/en-int\/collections\/equatorial-mounts\"\u003eequatorial mount\u003c\/a\u003e, which is ideal for imaging as it will track the Sun.\u003c\/li\u003e\n    \u003cli\u003eA robust \u003ca href=\"\/en-int\/collections\/alt-azimuth-mounts\"\u003ealt-azimuth mount\u003c\/a\u003e with slow-motion controls for comfortable visual observing.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    The included Vixen-style dovetail ensures compatibility with most modern astronomical mounts.\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Scout 80mm Prominence model require external power?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The internal H-alpha filter etalon must be heated to a precise temperature to stay on the correct wavelength. The Daystar Scout 80mm accomplishes this with a USB-powered heater. Use the supplied power supply; any other USB source must be rated for at least 2 amps at 5 volts, as computer USB ports and cell phone chargers do not normally supply enough current.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I see with the Scout 80mm Prominence during a solar minimum vs. solar maximum?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eDuring \u003cstrong\u003esolar minimum\u003c\/strong\u003e, the Sun is very quiet. With the Scout 80mm Prominence, you will still be able to see small prominences at the limb and any filaments that may be present on the disk. During \u003cstrong\u003esolar maximum\u003c\/strong\u003e, the Sun is highly active. You can expect to see large, complex, and rapidly changing prominences, including dramatic loops, arches, and explosive eruptions like those from active region AR3664 in May 2024.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated H-Alpha Solar Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eScout Prominence\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eHelical\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eUSB-Powered Heated Etalon\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eReversible Vixen-Style Dovetail Foot\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with 4.3x telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal length\u003c\/td\u003e\n\u003ctd\u003e1400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/17.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail included\u003c\/td\u003e\n\u003ctd\u003eVixen-style foot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e512mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube outer diameter\u003c\/td\u003e\n\u003ctd\u003e94mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eDaystar Scout 80mm Solar Telescope\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003ePower Supply (110-240VAC wall adapter)\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eVixen-Style Dovetail\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eHard Case\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Scout_80_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967458832669,"sku":"DAY-SS80P","price":3493.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Scout-80mm-Solar-Telescope-1__84313.1597172829.1280.1280.jpg?v=1684342439"},{"product_id":"daystar-sr-127mm-solar-telescope-0-3-0-7a-pe-grade","title":"Daystar SR 127mm Solar Telescope - 0.3-0.7Å PE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e127mm Aperture Solar Refractor\u003c\/li\u003e\n\u003cli\u003eDedicated Hydrogen-Alpha Telescope\u003c\/li\u003e\n\u003cli\u003ePE Grade Etalon for Professional Uniformity\u003c\/li\u003e\n\u003cli\u003eSelectable Bandpass from 0.7Å to 0.3Å\u003c\/li\u003e\n\u003cli\u003eIntegrated and Optimized for Solar Safety\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar SR 127mm Solar Telescope - 0.3-0.7Å PE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar SR 127mm \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003eSolar Telescope\u003c\/a\u003e combines a large 127mm aperture with Daystar's professional-grade filtration, offering unparalleled views of the solar chromosphere. With bandpass options configurable from a wider 0.7Å down to an exceptionally narrow 0.3Å, this dedicated instrument delivers the resolution and contrast required for serious scientific study and imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e127mm Aperture: High-Resolution Views of the Chromosphere\u003c\/h3\u003e\n\u003cp\u003eThe substantial 127mm (5-inch) objective lens is the foundation of the SR 127mm's power, gathering enough light to resolve incredibly fine solar details. This aperture allows you to clearly distinguish delicate filaments against the solar disk, trace the intricate structure of spicules at the limb, and observe the evolution of active regions with stunning clarity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePE Grade Filtration: Uniformity from 0.7Å to 0.3Å\u003c\/h3\u003e\n\u003cp\u003eThis telescope features Daystar's PE (Professional Edition) grade etalon, ensuring exceptional uniformity across the entire field of view—a critical factor for high-resolution imaging and scientific measurement. You can configure the telescope with a specific bandpass, each offering a different view of solar phenomena.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWider Bandpasses (0.7Å - 0.6Å):\u003c\/strong\u003e These options produce a brighter image and are ideal for capturing magnificent, high-contrast views of solar prominences erupting from the limb of the Sun.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrower Bandpasses (0.5Å - 0.3Å):\u003c\/strong\u003e As the bandpass narrows, contrast on the solar disk increases dramatically. These choices excel at revealing the complex, textured surface of the chromosphere, making plages, filaments, and flare ribbons pop with detail.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Dedicated 127mm Solar Instrument: Integrated Safety and Optimization\u003c\/h3\u003e\n\u003cp\u003eAs a dedicated solar telescope, the SR 127mm is engineered from the ground up for one purpose. Unlike modular accessories, the entire optical train, including all necessary energy rejection filters, is integrated into the telescope body. There is no separate filter to forget or mismatch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDaystar SR 127mm vs. A Modular Quark System: The Dedicated Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile a Daystar Quark can transform a standard nighttime \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e into a solar telescope, the SR 127mm dedicated platform offers distinct advantages for the serious observer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Optimization:\u003c\/strong\u003e The SR 127mm's internal etalon and telecentric optics are permanently installed and perfectly matched to the 127mm objective, eliminating compatibility issues and ensuring even illumination across the entire field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInherent Safety:\u003c\/strong\u003e A modular setup requires careful assembly with the correct energy rejection filter (ERF) for the aperture. The SR 127mm has all filtration built-in, making it a safer, grab-and-go solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e The integrated design of the SR 127mm provides a more stable thermal environment for the precision-tuned etalon, leading to more consistent on-band performance during long observing or imaging sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich bandpass (0.3Å to 0.7Å) is right for my observing goals with the Daystar SR 127mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYour choice depends on your primary target. For the highest contrast on disk features like filaments, flares, and plages, a narrower bandpass (\u003cstrong\u003e0.3Å to 0.5Å\u003c\/strong\u003e) is superior. For brighter, more dramatic views of prominences on the solar limb, a wider bandpass (\u003cstrong\u003e0.6Å or 0.7Å\u003c\/strong\u003e) is often preferred.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I see with the Daystar SR 127mm that I can't with a smaller 60mm solar scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 127mm aperture provides over four times the light-gathering area of a 60mm scope, resulting in significantly higher resolution. With the SR 127mm, you can resolve fine, thread-like details in filaments, see subtle structures within sunspot umbras, and clearly define the \"forest\" of spicules along the solar limb, all of which would be blurred or invisible in a smaller instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar SR 127mm suitable for professional solar imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The combination of the large 127mm aperture for high resolution and the \u003cstrong\u003ePE Grade etalon\u003c\/strong\u003e for superior field uniformity makes the SR 127mm an excellent choice for research, pro-am collaborations, and advanced solar imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any other filters to use the Daystar SR 127mm safely?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Daystar SR 127mm is a fully integrated, dedicated solar telescope. All necessary safety and blocking filters are built directly into the optical assembly. To begin observing, plug in the included power supply, insert a \u003ca href=\"\/en-int\/collections\/diagonals\"\u003ediagonal\u003c\/a\u003e and \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e, and wait for the green light. If the telescope is pointed more than about 1 degree off the Sun, for example while setting up the telescope or mount, concentrated light can fall on the inside of the tube and cause localized heating. Do not leave it like this for more than a minute, and keep the front cover on until you are ready to observe.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does observing a solar flare with the SR 127mm at 0.5Å compare to viewing sunspots in white light?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eViewing in white light shows you sunspots on the photosphere, the Sun's visible surface. The Daystar SR 127mm observes in Hydrogen-alpha light, revealing the chromosphere above it. An active region that shows simple spots in white light will, through the SR 127mm at 0.5Å, reveal a complex network of bright plages, dark filaments, and potentially the sudden, brilliant eruption of a solar flare—all phenomena that are completely invisible in a white-light telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use standard 1.25\" or 2\" eyepieces with the Daystar SR 127mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Daystar SR 127mm typically terminates in a standard \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e that accepts either 1.25\" or 2\" eyepieces and accessories, allowing you to use your existing eyepiece collection to vary the magnification for wide-field or high-power views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated H-alpha Solar Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e127mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Bandpass Options\u003c\/td\u003e\n\u003ctd\u003e0.7Å, 0.6Å, 0.5Å, 0.4Å, 0.3Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003ePE (Professional Edition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e2\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser \/ drawtube size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e790mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube outer diameter\u003c\/td\u003e\n\u003ctd\u003e136mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA weight\u003c\/td\u003e\n\u003ctd\u003e6.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e6200 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSR127 telescope\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting rings with Vixen dovetail\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZero power solar finder 'alignment keys'\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e120-240VAC AC adapter (power supply)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_SR127_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"0.7Å \/ PE","offer_id":44967458898205,"sku":"DAY-.7SR127PE","price":22386.0,"currency_code":"CAD","in_stock":true},{"title":"0.6Å \/ PE","offer_id":44967458930973,"sku":"DAY-.6SR127PE","price":27986.0,"currency_code":"CAD","in_stock":true},{"title":"0.5Å \/ PE","offer_id":44967458963741,"sku":"DAY-.5SR127PE","price":33586.0,"currency_code":"CAD","in_stock":true},{"title":"0.4Å \/ PE","offer_id":44967458996509,"sku":"DAY-.4SR127PE","price":41986.0,"currency_code":"CAD","in_stock":true},{"title":"0.3Å \/ PE","offer_id":44967459029277,"sku":"DAY-.3SR127PE","price":50386.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SR127QT-1__64064.1597171530.1280.1280.jpg?v=1684342445"},{"product_id":"daystar-sr-127mm-solar-telescope-prominence-se-grade","title":"Daystar SR 127mm Solar Telescope Prominence - SE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e127mm Aperture Solar Telescope\u003c\/li\u003e\n\u003cli\u003eDedicated Hydrogen-Alpha System\u003c\/li\u003e\n\u003cli\u003eProminence-Tuned for Solar Limb Events\u003c\/li\u003e\n\u003cli\u003eSE (Standard Edition) Grade Filter\u003c\/li\u003e\n\u003cli\u003eIntegrated Daystar H-alpha Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eDaystar SR 127mm Solar Telescope Prominence - SE Grade\u003c\/h2\u003e\n      \u003cp\u003eThe Daystar SR 127mm Solar Telescope is a complete, dedicated H-alpha instrument designed for high-resolution views of solar prominences. This model integrates a 127mm doublet \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e with Daystar's renowned filtration technology, optimized specifically for capturing the dynamic, high-contrast structure of events at the Sun's limb. The SE Grade filter ensures excellent visual and imaging fidelity for detailed observation of our home star.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eThe Daystar SR 127mm Dedicated Solar Telescope\u003c\/h3\u003e\n      \u003cp\u003eUnlike modular filters like the Quark, the SR 127mm is an integrated solar telescope. This all-in-one design ensures that all optical components are perfectly matched and aligned for solar observation, eliminating the compromises and compatibility issues that can arise from adapting third-party telescopes. With a 127mm aperture, this telescope gathers significantly more light and achieves higher resolution than smaller-aperture solar scopes, revealing finer details in filaments, flares, and the intricate structure of prominences.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eProminence Tuning: Optimized for Solar Limb Dynamics\u003c\/h3\u003e\n      \u003cp\u003eThis version of the SR 127mm is \"Prominence\" tuned, meaning its H-alpha filter has a bandpass tailored for maximum brightness and contrast on features seen at the edge of the solar disk. This allows erupting prominences, loops, and sprays to stand out vividly against the blackness of space. The trade-off for this optimization is slightly reduced contrast on the fine, low-contrast details of the solar chromosphere, such as spicules, which are better served by Daystar's \"Chromosphere\" tuned models.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eSE Grade Filtration: High-Contrast Views for Visual and Imaging\u003c\/h3\u003e\n      \u003cp\u003eDaystar's SE (Standard Edition) Grade filters are designed to deliver excellent solar views for both visual observers and many imagers. SE Grade optics provide high-contrast images and good filter uniformity across the field of view, suitable for full-disk views and imaging with a wide range of cameras. While the PE (Professional Edition) Grade offers a higher specification on bandpass uniformity for scientific or highly demanding imaging applications, the SE Grade represents the optimal balance for most amateur solar astronomy.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eDaystar SR 127mm: Choosing Your Configuration\u003c\/h3\u003e\n      \u003cp\u003eWhen selecting a Daystar solar telescope, the primary choices involve tuning and filter grade. This model is configured for a specific use case, but it's important to understand the alternatives.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eProminence vs. Chromosphere Tuning:\u003c\/strong\u003e The Prominence model, as featured here, excels at bright limb detail. A Chromosphere-tuned model would use a narrower bandpass to increase contrast on the Sun's surface at the expense of prominence brightness.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSE Grade vs. PE Grade:\u003c\/strong\u003e This SE Grade model is the standard for high-quality amateur observation. The PE Grade is a premium option offering tighter tolerances on filter uniformity, primarily benefiting those doing professional research, high-magnification imaging, or seeking the absolute highest level of optical perfection.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the Daystar SR 127mm Prominence model?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe main advantage is its optimization for viewing and imaging \u003cstrong\u003esolar prominences\u003c\/strong\u003e. The filter's bandpass is specifically set to make these structures, which are visible at the edge of the Sun, appear as bright and detailed as possible against the dark background of space. This makes it ideal for observing dynamic events like solar flares and coronal mass ejections (CMEs) as they erupt from the limb.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the SE Grade filter in the SR 127mm compare to the PE Grade?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003eSE (Standard Edition) Grade\u003c\/strong\u003e filter provides excellent performance for the majority of visual observers and imagers, with high-contrast views and good filter uniformity. The \u003cstrong\u003ePE (Professional Edition) Grade\u003c\/strong\u003e offers a higher level of precision with stricter tolerances on bandpass uniformity across the entire filter. PE Grade is typically chosen by scientific institutions or advanced imagers who require the most flawless data possible, while SE Grade offers a superb experience for amateur solar astronomy.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of solar events can I see with the SR 127mm Prominence telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWith its 127mm aperture and prominence-focused tuning, you can observe a wide range of solar phenomena. Key targets include:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eProminences:\u003c\/strong\u003e Large, arching structures of plasma at the solar limb.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSolar Flares:\u003c\/strong\u003e Bright, intense bursts of energy, especially visible when they occur at the limb.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFilaments:\u003c\/strong\u003e These are the same as prominences, but seen against the bright solar disk, appearing as dark, snake-like lines.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eActive Regions:\u003c\/strong\u003e While surface contrast is lower than a chromosphere model, you can still easily see the bright plage surrounding sunspots.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the SR 127mm Prominence telescope good for imaging a full solar disk with prominences?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The SR 127mm is an excellent platform for imaging. Its 127mm aperture provides the resolution needed for detailed close-ups of active regions and prominences. To capture the full solar disk, you may need to use a \u003ca href=\"\/en-int\/collections\/flatteners-and-reducers\"\u003efocal reducer\u003c\/a\u003e or create a mosaic, depending on the focal length of the telescope and the size of your camera's sensor.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any other filters to use the Daystar SR 127mm safely?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. The Daystar SR 127mm is a \u003cstrong\u003ededicated and integrated solar telescope\u003c\/strong\u003e. It includes all necessary filtration for safe H-alpha solar observing. A \u003ca href=\"\/en-int\/collections\/herschel-wedges\"\u003eHerschel wedge\u003c\/a\u003e or white light filter cannot be used with it, as the image would be extremely dark. If the telescope is pointed more than about 1 degree off the Sun, for example while setting up the telescope or mount, concentrated light can fall on the inside of the tube and cause localized heating. Do not leave it like this for more than a minute, and keep the front cover on until you are ready to observe.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this dedicated SR 127mm telescope and a Daystar Quark filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe SR 127mm is a \u003cstrong\u003ecomplete telescope\u003c\/strong\u003e where the optics and filter are a single, optimized unit. A \u003cstrong\u003eDaystar Quark\u003c\/strong\u003e is a modular filter that you add to a standard nighttime refractor you already own. While a Quark is a versatile way to start solar observing, a dedicated system like the SR 127mm offers superior performance because the entire optical train is designed specifically for H-alpha wavelengths, eliminating compromises in performance.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTelescope Type\u003c\/td\u003e\n\u003ctd\u003eDedicated H-Alpha Solar Telescope\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e127mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFilter Tuning\u003c\/td\u003e\n\u003ctd\u003eProminence\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFilter Grade\u003c\/td\u003e\n\u003ctd\u003eSE (Standard Edition)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e2\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser \/ drawtube size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e790mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube outer diameter\u003c\/td\u003e\n\u003ctd\u003e136mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA weight\u003c\/td\u003e\n\u003ctd\u003e6.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e6200 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eDaystar SR 127mm Solar Telescope\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_SR127_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967459258653,"sku":"DAY-SR127QTP","price":11193.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SR127QT-1__92628.1597171366.1280.1280.jpg?v=1684342451"},{"product_id":"daystar-sr-127mm-solar-telescope-chromosphere-se-grade","title":"Daystar SR 127mm Solar Telescope Chromosphere - SE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e127mm Refractor Design\u003c\/li\u003e\n\u003cli\u003eDedicated Hydrogen-Alpha Solar Telescope\u003c\/li\u003e\n\u003cli\u003eObserve the Sun's Chromosphere\u003c\/li\u003e\n\u003cli\u003eIntegrated, Heated, On-Band Etalon\u003c\/li\u003e\n\u003cli\u003eSE (Standard Edition) Grade Filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar SR 127mm Solar Telescope Chromosphere - SE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar SR 127mm \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003eSolar Telescope\u003c\/a\u003e is a fully integrated H-alpha instrument designed to deliver high-resolution views of the solar chromosphere, using its 127mm objective lens to resolve fine details in prominences, filaments, and the chromospheric surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e127mm Aperture: High-Resolution Solar Detail\u003c\/h3\u003e\n\u003cp\u003eThe 127mm (5-inch) aperture is the heart of this telescope's imaging capability. This generous objective gathers significantly more light and achieves a higher degree of resolution than smaller 60mm or 80mm solar scopes, allowing you to resolve intricate structures within filaments and see fine spicules at the solar limb. For the serious solar observer, this aperture provides the power to see subtle, dynamic changes in the Sun's active regions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Dedicated H-alpha System for the Chromosphere\u003c\/h3\u003e\n\u003cp\u003eUnlike a standalone filter, the SR 127mm is an end-to-end system where every component is optimized for H-alpha observation. The internal, heated Daystar etalon is perfectly matched to the telescope's optical train, ensuring even illumination and maximum contrast across the entire field of view. This integrated design eliminates the compromises and potential compatibility issues of adapting a third-party filter to a general-purpose nighttime telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSE Grade Etalon: Optimized for Visual Solar Observing\u003c\/h3\u003e\n\u003cp\u003eThis telescope features Daystar's SE (Standard Edition) grade etalon, which is engineered to provide excellent contrast and detail for visual observation and general imaging. While the higher PE grade is designed for the stringent uniformity demands of scientific research, the SE grade delivers the high-contrast, detailed views that have made Daystar a leader in solar astronomy. It represents a deliberate balance, making high-resolution solar observing accessible without the cost of a research-grade instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDaystar SR 127mm vs. A Quark on a Standard Refractor\u003c\/h3\u003e\n\u003cp\u003eAn alternative to a dedicated solar scope is using a Daystar Quark H-alpha \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e filter on a standard 127mm \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e. While that approach is more affordable and allows the telescope to be used for night sky observing, the dedicated SR 127mm offers distinct advantages.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Optimization:\u003c\/strong\u003e The SR 127mm's optics, including its integrated blocking filter and telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003ebarlow\u003c\/a\u003e, are permanently installed and designed specifically for the etalon. This creates a more robust, higher-contrast image than a modular system can typically achieve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEase of Use:\u003c\/strong\u003e As a turnkey solution, the SR 127mm removes the guesswork. There is no need to worry about component matching, back focus, or whether your chosen refractor is suitable for a Quark. It is ready for observation right out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I see with the Daystar SR 127mm Chromosphere telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar SR 127mm is a Hydrogen-alpha telescope designed to view the sun's chromosphere. You can observe dynamic phenomena such as \u003cstrong\u003esolar prominences\u003c\/strong\u003e (eruptions on the limb), \u003cstrong\u003efilaments\u003c\/strong\u003e (prominences seen against the solar disk), and plages (bright active regions).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between an SE and PE grade Daystar filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eSE (Standard Edition)\u003c\/strong\u003e grade filters are Daystar's standard for high-quality visual solar observing and general imaging, offering excellent contrast. \u003cstrong\u003ePE (Professional Edition)\u003c\/strong\u003e filters are held to a stricter uniformity standard, designed for professional research, academic use, and high-end imaging where precise data is the primary goal. For most observers, the SE grade delivers outstanding views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar SR 127mm for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the SR 127mm is well-suited for high-resolution solar imaging with modern high-frame-rate \u003ca href=\"\/en-int\/collections\/cameras\"\u003eastronomy cameras\u003c\/a\u003e. Its 127mm aperture provides the resolving power needed to capture fine details in active regions and prominences. The SE grade etalon produces high-contrast images suitable for most amateur solar imagers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy choose the dedicated SR 127mm telescope over a Daystar Quark filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe dedicated SR 127mm is a fully optimized, turnkey system. Every optical component is matched to the internal H-alpha filter, ensuring maximum contrast and even field illumination. A Quark filter is a more versatile and affordable option, but it requires careful matching with a suitable third-party telescope and may not achieve the same level of optimized, integrated performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Daystar SR 127mm perform on a large solar prominence compared to an 80mm solar scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 127mm aperture of the SR 127mm provides significantly higher resolution than an 80mm scope. On a large, detailed prominence, you will be able to resolve finer structures, like delicate loops and streamers, that would appear as a softer, less-defined mass in the smaller instrument.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the Daystar SR 127mm resolve fine spicules at the sun's limb?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, under conditions of good seeing, the 127mm aperture is capable of resolving spicules—the small, jet-like features that make up the \"furry\" edge of the sun's chromosphere. This is a classic test of a high-resolution solar telescope, and the SR 127mm is designed to excel at it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e127mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical design\u003c\/td\u003e\n\u003ctd\u003eAchromatic doublet with telecentric barlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal ratio\u003c\/td\u003e\n\u003ctd\u003ef\/21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear \/ camera-side connection\u003c\/td\u003e\n\u003ctd\u003e2\" female drawtube with compression ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser \/ drawtube size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube length (retracted)\u003c\/td\u003e\n\u003ctd\u003e790mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube outer diameter\u003c\/td\u003e\n\u003ctd\u003e136mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA weight\u003c\/td\u003e\n\u003ctd\u003e6.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e6200 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eSR127 telescope\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting rings with Vixen dovetail\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZero power solar finder 'alignment keys'\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e120-240VAC AC adapter (power supply)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_SR127_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967459356957,"sku":"DAY-SR127QTC","price":13993.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-SR127QT-1__02841.1597171249.1280.1280.jpg?v=1684342456"},{"product_id":"daystar-quantum-h-alpha-solar-filter","title":"Daystar Quantum H-alpha Solar Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBandpass options from 0.8Å down to 0.3Å for specific solar targets\u003c\/li\u003e\n\u003cli\u003eLive LCD readout of the precise wavelength output, accurate to 0.1Å\u003c\/li\u003e\n\u003cli\u003eRed\/blue push-button wing shifting for observing Doppler events\u003c\/li\u003e\n\u003cli\u003eOperates on 12VDC power for field use and includes a serial port for computer control\u003c\/li\u003e\n\u003cli\u003eProfessional Edition (PE) grade; Standard Edition (SE) models are sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quantum H-alpha Solar Filter\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quantum H-alpha \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003eSolar Filter\u003c\/a\u003e is an electronically-tuned etalon for dedicated solar observation, offering bandpass options from a wider 0.8Å to an ultra-narrow 0.3Å. Its precision housing provides a live LCD readout of the filter's output with 0.1Å accuracy and includes red\/blue wing-shift buttons for detailed Doppler studies of solar phenomena. Designed for \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractors\u003c\/a\u003e, \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSCTs\u003c\/a\u003e and \u003ca href=\"\/en-int\/collections\/maksutov-cassegrain-telescopes\"\u003eMaksutovs\u003c\/a\u003e operating at f\/27 to f\/40 (preferably f\/30) with an appropriate energy rejection filter (ERF), it shows a green light when the filter is on-band and ready for observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBandpass Options from 0.8Å to 0.3Å\u003c\/h3\u003e\n\u003cp\u003eThe Quantum filter is available in a range of bandpasses, allowing you to select the ideal instrument for your observing goals. Wider options like 0.7Å or 0.8Å deliver brighter views of solar prominences erupting from the limb, while narrower bandpasses of 0.4Å or 0.3Å provide the highest contrast for resolving fine details in the chromosphere, such as spicules and filamentary structure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Wavelength Tuning with 0.1Å Accuracy\u003c\/h3\u003e\n\u003cp\u003eAt the core of the Quantum's design is its digital control system. A live LCD readout displays the exact wavelength being transmitted with an accuracy of 0.1Å, removing any guesswork. For advanced analysis, red and blue wing-shift buttons allow you to precisely tune the wavelength off the central H-alpha line, enabling the study of Doppler-shifted features like CMEs and other active regions moving toward or away from you.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSE vs. PE Grades: Choosing Your Filter Homogeneity\u003c\/h3\u003e\n\u003cp\u003eDaystar offers the Quantum filter in two distinct grades to match specific application requirements. The choice between them depends on the required level of on-band transmittance uniformity across the filter's surface.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantum SE (Standard Edition):\u003c\/strong\u003e Designed for most amateur and academic applications, the SE grade meets Daystar's critical quality control standards for visual observation and many photographic uses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantum PE (Professional Edition):\u003c\/strong\u003e Intended for professional research where precise homogeneity is paramount, the PE grade undergoes additional quality control steps and testing to ensure the highest uniformity and on-band transmittance values across the entire substrate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e12VDC Power and Serial Computer Control\u003c\/h3\u003e\n\u003cp\u003eEngineered for both field and observatory use, the Quantum filter operates on 12VDC power. Each unit includes a 100-240V power supply with adapter plates for US, UK, European, and Australian outlets. A built-in serial port enables full computer control, allowing for remote operation and an on-screen display of the filter's wavelength readout for research and automated imaging sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Daystar Quantum bandpass is best for prominences vs. surface detail?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor observing prominences, a wider bandpass like \u003cstrong\u003e0.7Å or 0.8Å\u003c\/strong\u003e is often preferred as it produces a brighter image of these structures against the blackness of space. For high-contrast views of surface details like filaments, plages, and spicules, a narrower bandpass like \u003cstrong\u003e0.5Å, 0.4Å, or 0.3Å\u003c\/strong\u003e is superior, as it rejects more off-band light from the photosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Daystar Quantum SE and PE grades?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is the uniformity of the filter's performance across its surface. The \u003cstrong\u003eQuantum SE (Standard Edition)\u003c\/strong\u003e is ideal for visual astronomy and general imaging. The \u003cstrong\u003eQuantum PE (Professional Edition)\u003c\/strong\u003e undergoes more rigorous testing to guarantee precision homogeneity and on-band transmittance, making it the choice for professional research applications where scientific-grade data is required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the Daystar Quantum filter's wing-shifting feature?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe red and blue buttons on the Quantum housing allow you to tune the filter slightly off the central H-alpha wavelength. This is used for observing Doppler-shifted phenomena. For example, a solar flare moving rapidly toward Earth will have its light shifted toward the blue end of the spectrum. Pressing the blue button tunes the filter to that wavelength, making the feature more visible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quantum H-alpha filter on my 11\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Daystar Quantum filter is designed for use on Schmidt-Cassegrains, Maksutovs, and refractors. However, the Quantum must be used on a telescope operating at f\/27 to f\/40 (preferably f\/30) with an appropriate energy rejection filter (ERF). SCT owners must use the 1.9° wedge plate mounted on the gold side of the filter, and Daystar offers off-axis ERFs for SCTs, including the 11\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply do I need for the Daystar Quantum filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quantum filter operates on \u003cstrong\u003e12VDC\u003c\/strong\u003e. It includes a universal 100-240V AC adapter with interchangeable wall plates for international use, allowing you to power it from a standard wall outlet. For field use, it can be powered by a portable 12V battery pack.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the computer control feature on the Daystar Quantum filter work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter includes a serial port that allows you to connect it to a computer. Using Daystar's Quantum Control software, you can manage the filter's wavelength tuning remotely. This is especially useful for automated imaging sequences, remote observatories, or for displaying and logging the precise wavelength data during scientific research.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003e0.8Å, 0.7Å, 0.6Å, 0.5Å, 0.4Å, 0.3Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e656.28 nm (6562.8 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e0.8, 0.7, 0.6, 0.5, 0.4 or 0.3 Å (by variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear aperture\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eRed\/blue wing shift buttons, +\/- 1.0 Å, LCD readout to 0.1 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuantum filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e100-240V power supply with US, European, UK and Australian wall plates\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Daystar_Filters_Quantum_Serial_Protocol_V1.2_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.daystarfilters.com\/downloads\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"0.8Å \/ PE","offer_id":44967459455261,"sku":"DAY-.8QPE","price":16786.0,"currency_code":"CAD","in_stock":true},{"title":"0.7Å \/ PE","offer_id":44967459488029,"sku":"DAY-.7QPE","price":19586.0,"currency_code":"CAD","in_stock":true},{"title":"0.6Å \/ PE","offer_id":44967459520797,"sku":"DAY-.6QPE","price":25186.0,"currency_code":"CAD","in_stock":true},{"title":"0.5Å \/ PE","offer_id":44967459553565,"sku":"DAY-.5QPE","price":30786.0,"currency_code":"CAD","in_stock":true},{"title":"0.4Å \/ PE","offer_id":44967459586333,"sku":"DAY-.4QPE","price":39186.0,"currency_code":"CAD","in_stock":true},{"title":"0.3Å \/ PE","offer_id":44967459619101,"sku":"DAY-.3QPE","price":50386.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quantum-H-alpha-Solar-Filter-1__47848.1597170747.1280.1280.jpg?v=1684342459"},{"product_id":"daystar-quantum-calcium-ii-h-line-solar-filter-5a-pe-grade","title":"Daystar Quantum Calcium II H-Line Solar Filter - 5Å PE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTargets the Calcium II H-Line Emission\u003c\/li\u003e\n\u003cli\u003eOptimized for Visual and Imaging Use\u003c\/li\u003e\n\u003cli\u003eReveals Lower Chromospheric Detail\u003c\/li\u003e\n\u003cli\u003eProduces a High-Contrast Violet Image\u003c\/li\u003e\n\u003cli\u003eProfessional (PE) Grade Optical System\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quantum Calcium II H-Line Solar Filter - 5Å PE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quantum Calcium II H-Line Solar Filter is engineered for observers who want to visually experience the sun's lower chromosphere. By specifically targeting the Calcium H-line, this filter produces a higher contrast and more easily visible violet image than traditional K-line filters, making it a superior choice for direct observation and advanced imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Visual-First Approach to Calcium Solar Observing\u003c\/h3\u003e\n\u003cp\u003eWhile most academic solar research has focused on the Calcium K-line, that wavelength (393.3nm) sits below the approximately 400nm end of the visual spectrum and is difficult for the human eye to perceive. Daystar's H-Line filter targets a different emission line of Calcium that is significantly closer to the visible spectrum, resulting in a bright, high-contrast violet view that is far easier to focus and observe directly through the \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHigh-Contrast Views of the Lower Chromosphere\u003c\/h3\u003e\n\u003cp\u003eThis filter opens a window into the dynamic lower layers of the solar atmosphere, revealing details invisible in white light or Hydrogen-alpha. You can observe the bright, complex magnetic regions known as plage that surround sunspot groups, track the boundaries of supergranulation cells across the solar disk, and witness the energetic brightening that precedes a solar flare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCalcium H-Line vs. K-Line: A Comparison for Observers\u003c\/h3\u003e\n\u003cp\u003eThe choice between a Calcium H-line and K-line filter comes down to your primary application: research or visual astronomy.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium K-Line:\u003c\/strong\u003e This is the traditional choice for university-level research. Its wavelength is well-isolated from other spectral lines, providing clean data for academic studies. However, its wavelength just below the visual spectrum makes it much harder to use visually.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium H-Line (This Filter):\u003c\/strong\u003e This filter is designed for the amateur astronomer. By shifting to a wavelength much closer to what the eye can see, it makes direct visual observation of the chromosphere possible and highly rewarding. The view is still a deep violet, but one that your eye can readily focus on, revealing solar features in real-time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat solar features can I see with the Daystar Quantum Calcium II H-Line filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quantum Calcium II H-Line filter reveals features in the sun's lower chromosphere. You will be able to see \u003cstrong\u003ebright plage\u003c\/strong\u003e (active regions around sunspots), the network pattern of \u003cstrong\u003esupergranulation cells\u003c\/strong\u003e, and \u003cstrong\u003epre-flare brightening\u003c\/strong\u003e in magnetically complex areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I choose this Calcium H-Line filter over a K-Line filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou should choose the H-Line filter if you have any interest in \u003cstrong\u003evisual observation\u003c\/strong\u003e. The K-line wavelength sits below the approximately 400nm end of the visual spectrum, so it is harder for the human eye to see. The H-line is much closer to the visible spectrum, producing a distinct violet image that is significantly easier to see and focus through an eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Quantum filter better for visual observing or imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is designed to excel at both. However, its primary advantage over traditional K-line filters is its superior performance for \u003cstrong\u003evisual observation\u003c\/strong\u003e. For imagers, the more visible wavelength can also make achieving sharp focus easier before starting a capture sequence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Daystar Quantum Calcium II H-Line filter show a large sunspot group with my 100mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the sunspots themselves will appear as dark umbra (similar to white light), the Daystar Quantum Calcium II H-Line filter will reveal the extensive, bright, and detailed plage surrounding the spot group. This highlights the intense magnetic activity below the surface, which is completely invisible without a specialized filter like this one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Quantum Calcium II H-Line filter a good choice for my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt can be, set up to Daystar's requirements. Calcium H and K filters do not require F\/30 but are used at F\/15, F\/20 or greater, so an SCT must be configured to deliver at least F\/15. Instead of a red or yellow glass energy rejection filter, use a dielectric \"hot mirror\" \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filter\u003c\/a\u003e ahead of focus, plus an additional neutral density \u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003esolar film\u003c\/a\u003e on apertures above 150mm or for long-term dedicated use. The brighter, more visible image produced by the H-line can be an advantage on long focal-ratio instruments like \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSCTs\u003c\/a\u003e, potentially allowing for shorter exposure times during imaging compared to K-line systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat color is the sun through the Daystar Quantum Calcium II H-Line filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe sun will appear as a \u003cstrong\u003ehigh-contrast, deep violet\u003c\/strong\u003e image. This color is the natural result of isolating the specific Calcium H-line emission. While deep, this particular shade of violet is much easier for the human eye to perceive than the light from a K-line filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e396.9 nm (3969 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e5 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eRed\/blue wing shift buttons with LCD wavelength readout (0.1 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuantum filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e100-240V power supply with US, European, UK and Australian wall plates\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.daystarfilters.com\/downloads\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967464698141,"sku":"DAY-CH5AUNI","price":19586.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quantum-Calcium-II-Solar-Filter-CH5AUNI__53954.1597170543.1280.1280.jpg?v=1684342497"},{"product_id":"daystar-quantum-calcium-ii-k-solar-filter-2a-pe-grade","title":"Daystar Quantum Calcium II K Solar Filter - 2Å PE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTargets the Calcium II K-line at 393.3nm\u003c\/li\u003e\n\u003cli\u003e2Å Bandpass for high-contrast chromospheric detail\u003c\/li\u003e\n\u003cli\u003ePE (Professional Edition) Grade for research applications\u003c\/li\u003e\n\u003cli\u003eQuantum electronic controls provide 0.1Å tuning precision\u003c\/li\u003e\n\u003cli\u003eOptimized for CCD photography and scientific analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quantum Calcium II K Solar Filter - 2Å PE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quantum Calcium II K \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003eSolar Filter\u003c\/a\u003e isolates the solar chromosphere at the 393.3nm K-line with a 2Å bandpass, making it a dedicated instrument for academic research and advanced CCD imaging. Its Quantum control system allows for precision wing-shifting accurate to 0.1Å, enabling detailed studies of the solar atmosphere's three-dimensional structure. Calcium H and K-line filters do not require f\/30 and may be used at f\/15, f\/20 or greater; instead of a red or yellow glass energy rejection prefilter, use dielectric \"hot mirror\" \u003ca href=\"\/en-int\/collections\/uv-ir-clear-and-specialty-filters\"\u003eUV\/IR cut filters\u003c\/a\u003e introduced ahead of focus, plus an additional neutral density \u003ca href=\"\/en-int\/collections\/white-light-solar-filters\"\u003esolar film\u003c\/a\u003e on apertures above 150mm or for long-term dedicated applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Research Tool for the Sun's Chromosphere: 2Å at the 393.3nm K-Line\u003c\/h3\u003e\n\u003cp\u003eThis PE (Professional Edition) grade filter is engineered for university-level research into the composition and dynamics of the Sun. The 2Å bandpass centered on the 393.3nm Calcium K absorption line reveals high-contrast details in the lower to mid-chromosphere, such as supergranulation cells and the magnetic structure around sunspots.\u003c\/p\u003e\n\u003cp\u003eUnlike broadband white-light filters, a narrow Ca K filter provides a distinct view into a specific atmospheric layer. The PE grade ensures the highest level of uniformity across the filter, which is critical for producing scientific-quality data and flat-fielded images free of artifacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e0.1Å Precision Tuning: Mapping Atmospheric Layers with Quantum Controls\u003c\/h3\u003e\n\u003cp\u003eThe integrated Quantum electronic tuning system is the filter's core analytical function. By allowing you to shift the filter's central wavelength with an accuracy of 0.1Å, you can precisely measure Doppler effects and map different levels of the chromosphere. This capability is essential for studying velocity fields and the intensity differences between the K1, K2, and K3 components of the Calcium line.\u003c\/p\u003e\n\u003cp\u003eThis level of control transforms the filter from a simple viewing instrument into a scientific tool. You can investigate the subordinate peaks within the Ca II K line, effectively looking through different depths of the solar atmosphere to build a three-dimensional understanding of chromospheric structures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eK-Line vs. H-Line: Why the 393.3nm Wavelength is Optimized for CCDs\u003c\/h3\u003e\n\u003cp\u003eCalcium has two strong spectral lines: the K-line at 393.3nm and the H-line at 396.9nm. This filter targets the K-line, which has historically been the standard for academic research because it is well-isolated from other spectral lines. However, at 393.3nm, the light is deep into the violet part of the spectrum, very close to where human vision ends around 400nm.\u003c\/p\u003e\n\u003cp\u003eThis presents a critical trade-off: the Daystar Calcium K filter is exceptionally well-suited for monochrome CCD or CMOS cameras, which are highly sensitive at this wavelength. Visual observation is harder because the K-line lies below the approximately 400nm end of the visual spectrum. The H-line is visually brighter, but for the highest clarity in scientific imaging, the K-line remains the preferred target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Daystar Quantum Calcium II K filter primarily used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a specialized, research-grade solar filter designed for \u003cstrong\u003eacademic studies and advanced CCD imaging\u003c\/strong\u003e of the Sun's chromosphere. Its primary application is isolating the Calcium K-line at 393.3nm to study features like supergranulation, plage, and the magnetic networks around sunspots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Calcium K-line at 393.3nm difficult to see visually with this filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe human eye's sensitivity drops off sharply below 400nm. The \u003cstrong\u003e393.3nm wavelength\u003c\/strong\u003e of the Calcium K-line lies below the approximately 400nm end of the visual spectrum, so it is harder to see than the H-line. Imaging sensors are sensitive at this wavelength, which makes CCD photography an ideal application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the 0.1Å wing-shifting of the Quantum controls allow me to study?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e0.1Å precision tuning\u003c\/strong\u003e allows you to study Doppler-shifted phenomena on the Sun. By shifting the filter's bandpass off the central K-line, you can visualize solar material moving towards you (blue-shifted) or away from you (red-shifted). This is critical for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVelocity Field Mapping:\u003c\/strong\u003e Studying the motion of plasma in active regions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3D Chromosphere Analysis:\u003c\/strong\u003e Observing different depths of the solar atmosphere by targeting the K1, K2, and K3 peaks of the Ca II line profile.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quantum Calcium II K filter for general solar viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this filter is not recommended for general or casual solar viewing. It is a highly specialized scientific instrument. For general visual observation of sunspots, you should use a white-light filter. For prominences and surface detail, a Hydrogen-alpha filter is the standard choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 2Å bandpass of this filter help when imaging supergranulation cells on the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003e2Å bandpass\u003c\/strong\u003e is wide enough to show significant contrast in the chromospheric network, where supergranulation cells are most prominent. This bandwidth provides a bright image while still being narrow enough to isolate the key Calcium K features, making the boundaries of these large-scale convection cells stand out clearly in images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I am trying to study Doppler shifts in a solar flare with this Calcium K filter, how would I use the Quantum controls?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo study a solar flare, you would first tune the filter to the central \u003cstrong\u003e393.3nm wavelength\u003c\/strong\u003e to image the event. Then, using the \u003cstrong\u003e0.1Å precision\u003c\/strong\u003e of the Quantum controls, you would tune slightly towards blue (e.g., -0.5Å) to capture material being ejected towards you, and then slightly towards red (e.g., +0.5Å) to capture material falling back. Comparing these images reveals the flare's velocity structure and dynamics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e393.37 nm (3933.7 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e2 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eQuantum wing shift, accurate to 0.1 Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuantum filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e100-240V power supply with US, European, UK and Australian wall plates\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.daystarfilters.com\/downloads\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967464763677,"sku":"DAY-CK2AUNI","price":25186.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quantum-Calcium-II-Solar-Filter-CK2AUNI__24810.1597170337.1280.1280.jpg?v=1684342499"},{"product_id":"daystar-quantum-helium-d3-solar-filter-0-3a-pe-grade","title":"Daystar Quantum Helium D3 Solar Filter - 0.3Å PE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eObserves in the rare Helium D3 line at 5875.61Å\u003c\/li\u003e\n\u003cli\u003eUltra-narrow 0.3Å bandpass for maximizing contrast\u003c\/li\u003e\n\u003cli\u003eProfessional Edition (PE) grade for research-level precision\u003c\/li\u003e\n\u003cli\u003eReveals unique solar phenomena including flare footprints and magnetic lines\u003c\/li\u003e\n\u003cli\u003eEnables direct observation of a line previously studied only indirectly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quantum Helium D3 Solar Filter - 0.3Å PE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quantum Helium D3 Solar Filter makes observation of the 5875.61Å emission line possible, a feat of optical engineering previously unavailable to researchers and advanced observers. This Professional Edition (PE) grade filter uses an ultra-narrow 0.3Å bandpass to isolate the elusive wavelength, which was first identified during the solar eclipse of 1868. By achieving the extreme tuning accuracy required to capture this line, the Quantum He D3 filter opens a new, dynamic window into the solar chromosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eIsolating the Chromosphere at 5875.61Å\u003c\/h3\u003e\n\u003cp\u003eFor the first time, you can directly view solar phenomena in the light of Helium D3. Located near the Sodium D1 and D2 lines, the He D3 line at 5875.61Å has historically been a challenge to isolate, with past research relying on indirect 'overlappogram' methods. Daystar's Quantum He D3 is the only filter on the market that places this wavelength directly in your \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e or on your imaging sensor, enabling novel studies of solar physics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 0.3Å Bandpass for High-Contrast Solar Features\u003c\/h3\u003e\n\u003cp\u003eThe filter's extremely narrow 0.3Å bandpass is the key to revealing the subtle and energetic structures unique to this wavelength. By rejecting adjacent light from the solar continuum, the filter dramatically increases contrast on specific chromospheric targets. This allows you to observe features that are washed out in other wavelengths or in white light.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlare Research:\u003c\/strong\u003e See bright emission in flare footprints, tracing the points where energy is deposited into the lower chromosphere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic Structures:\u003c\/strong\u003e Observe dark absorption features that directly follow the Sun's complex magnetic field lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromospheric Detail:\u003c\/strong\u003e Clearly resolve supergranulation, plage, and fine sunspot details with enhanced contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProminences:\u003c\/strong\u003e While H-alpha is superior for large prominences, smaller, hotter prominence structures can be visible in He D3.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePE Grade Precision: Required for the 5875.61Å Line\u003c\/h3\u003e\n\u003cp\u003eIsolating the Helium D3 line demands extraordinary precision in the filter's central wavelength (CWL). For this reason, Daystar offers this filter exclusively in their Professional Edition (PE) grade. PE Grade filters are manufactured to a higher standard of uniformity and homogeneity across the entire aperture, ensuring that the 0.3Å bandpass is consistent from edge to edge for uncompromising, research-quality results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHelium D3 vs. Hydrogen-alpha: A New Observational Window\u003c\/h3\u003e\n\u003cp\u003eWhile Hydrogen-alpha at 6562.8Å remains the standard for viewing general chromospheric activity like filaments and large prominences, Helium D3 offers a complementary and highly specialized view. It is particularly sensitive to higher-energy events and provides a more direct look at the magnetic architecture of active regions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrogen-alpha's Advantage:\u003c\/strong\u003e Unmatched for viewing large, cool prominences against the blackness of space and long, dark filaments snaking across the solar disk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelium D3's Advantage:\u003c\/strong\u003e Excels at showing the immediate aftermath and footprint of solar flares and the intricate patterns of absorption that trace magnetic fields near active regions. For the advanced solar imager, adding He D3 data provides a more complete physical picture of solar events.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003cp\u003eThis product listing is for the Daystar Quantum Helium D3 Solar Filter with its 100-240V power supply and US, European, UK and Australian wall plates. Telescope-specific adapters are not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat specific solar features can I see with the Daystar Quantum Helium D3 filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quantum Helium D3 filter is designed to reveal specific, high-energy, and magnetically influenced phenomena. You can expect to see \u003cstrong\u003esunspot detail, supergranulation, plage, bright emission in flare footprints,\u003c\/strong\u003e and \u003cstrong\u003edark absorption lines that follow the Sun's magnetic fields.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Daystar Helium D3 filter only available in PE grade?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Helium D3 emission line at \u003cstrong\u003e5875.61Å\u003c\/strong\u003e is extremely narrow and difficult to isolate. It requires the highest level of precision in the filter's central wavelength accuracy. The \u003cstrong\u003eProfessional Edition (PE) grade\u003c\/strong\u003e ensures the strict manufacturing tolerances needed for research-quality uniformity and performance across the entire filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does observing with the Quantum Helium D3 filter compare to H-alpha?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey are complementary. \u003cstrong\u003eH-alpha (6562.8Å)\u003c\/strong\u003e is superior for general chromosphere viewing, showing large prominences and filaments. The \u003cstrong\u003eHelium D3 filter\u003c\/strong\u003e provides a specialized view of higher-energy events, making it ideal for studying flare impacts and the structure of solar magnetic fields, which are less distinct in H-alpha.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quantum Helium D3 filter on my 100mm f\/7 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Daystar Quantum filters are designed to work with a variety of telescopes, but they require the host telescope to operate at approximately f\/30. For an f\/7 \u003ca href=\"\/en-int\/collections\/refractors\"\u003erefractor\u003c\/a\u003e, you would need a 4x telecentric \u003ca href=\"\/en-int\/collections\/barlows-and-extenders\"\u003eBarlow lens\u003c\/a\u003e (like a TeleVue PowerMate) placed before the filter to achieve the required focal ratio. You will also need a full-aperture Energy Rejection Filter (ERF) mounted on the front of your telescope for safe operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the significance of the Helium D3 line at 5875.61Å for solar research?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eObserving in He D3 provides insight into different physical conditions than other wavelengths. It is particularly sensitive to regions of higher temperature and density in the chromosphere, especially those associated with solar flares and active regions. This filter allows researchers to directly study the magnetic and energetic processes in these areas, which were previously difficult to observe.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Quantum Helium D3 filter require external power to operate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. All Daystar Quantum series filters are electronically controlled and heated to maintain a precise operating temperature for on-band performance. The filter requires a stable 12V DC power source to function correctly. This allows for precise tuning of the central wavelength with the red\/blue buttons on the Quantum housing or with Quantum Control software through its serial port.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003eHelium D3 (5875.61Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e0.3Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003eProfessional Edition (PE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eRed\/blue wing shift buttons with LCD wavelength readout (0.1 Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuantum filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e100-240V power supply with US, European, UK and Australian wall plates\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967464861981,"sku":"DAY-HeD.3PE","price":25193.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quantum-Helium-D3-Solar-Filter__60923.1597164902.1280.1280.jpg?v=1684342501"},{"product_id":"daystar-quantum-sodium-d-solar-filter-0-4a-pe-grade","title":"Daystar Quantum Sodium D Solar Filter - 0.4Å PE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTargets the Sodium D emission line at 5895.9Å\u003c\/li\u003e\n\u003cli\u003eUltra-narrow 0.4Å bandpass for high-contrast views\u003c\/li\u003e\n\u003cli\u003eProfessional Edition (PE) grade for research applications\u003c\/li\u003e\n\u003cli\u003eEnables doppler velocity studies through controlled heating\u003c\/li\u003e\n\u003cli\u003eSuitable for both visual and photographic solar observation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Quantum Sodium D Solar Filter - 0.4Å PE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quantum Sodium D Solar Filter isolates the bright 5895.9Å emission line with a research-grade 0.4Å bandpass, precisely isolating it from the solar continuum. This Professional Edition (PE) quantum filter is engineered for sub-angstrom studies of the lower chromosphere, revealing dynamic phenomena like granulation, supergranulation, and impulsive-phase flare kernels that are invisible in other wavelengths. Daystar requires an energy rejection pre-filter and an f\/30 focal ratio for on-band operation; standard yellow glass Daystar energy rejection filters or dielectric \"hot mirror\" coated pre-filters provide sufficient off-band energy rejection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 0.4Å Bandpass at the 5895.9Å Sodium D Line\u003c\/h3\u003e\n\u003cp\u003eIsolating the Sodium D line requires exceptional precision. While the line itself is very bright, it is also extremely narrow, and a bandpass of less than 0.5Å is necessary to separate its signal from the overwhelming glare of the continuum. This 0.4Å PE-grade filter achieves that separation, delivering high-contrast views of features driven by heating in the low chromosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eVisualizing Granulation, Flares, and P-modes in the Lower Chromosphere\u003c\/h3\u003e\n\u003cp\u003eObserving in Sodium D provides a unique window into solar physics. The view reveals intricate details in granulation and supergranulation patterns across the solar disk. Because the Na D line is emitted when the low chromosphere is heated, it is particularly effective for identifying the footpoints of flux loops during a flare, pinpointing the eruption's origin point with clarity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eHeated Dual-Line Observation for Professional Doppler Studies\u003c\/h3\u003e\n\u003cp\u003eThis Quantum filter is designed for advanced research, including doppler velocity imaging. Unheated, it operates on the lower of the two Na D emission lines. By applying heat, the filter's bandpass can be shifted to the higher line. By capturing images in each line and processing the difference, you can create a dopplergram that maps surface motions associated with supergranulation—a technique previously limited to professional observatories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSodium D vs. Calcium K: A Brighter View of Chromospheric Detail\u003c\/h3\u003e\n\u003cp\u003eFor observers familiar with Calcium K-line solar filters, the Sodium D line offers a similar type of view, particularly in its rendering of granulation. The critical advantage of the Sodium D line is its brightness. This makes the image significantly easier to see visually and allows for shorter photographic exposures, making it a more accessible and versatile tool for studying the chromosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Daystar Quantum Sodium D filter different from H-alpha?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar Quantum Sodium D filter targets the \u003cstrong\u003e5895.9Å wavelength\u003c\/strong\u003e, which reveals activity in the Sun's \u003cstrong\u003elower chromosphere\u003c\/strong\u003e. This is ideal for studying granulation and the heated footpoints of solar flares. H-alpha filters target the \u003cstrong\u003e6562.8Å wavelength\u003c\/strong\u003e, showing features higher up in the chromosphere like prominences, filaments, and surface texture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat specific solar features can I see with the 0.4Å Sodium D filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ultra-narrow \u003cstrong\u003e0.4Å bandpass\u003c\/strong\u003e is designed to show high-detail in specific phenomena originating in the lower chromosphere. You can expect to see:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGranulation and supergranulation:\u003c\/strong\u003e Convective cells across the solar surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP-modes:\u003c\/strong\u003e Solar oscillations visible as surface patterns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpulsive-phase flare kernels:\u003c\/strong\u003e The bright, initial footpoints of a solar flare eruption.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the heating function on the Quantum Sodium D filter work for doppler studies?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Sodium D line is actually a doublet with two closely spaced emission lines. The Daystar Quantum filter is designed to operate \u003cstrong\u003eunheated\u003c\/strong\u003e on the lower line. By applying power and \u003cstrong\u003eheating\u003c\/strong\u003e the filter, you can precisely shift its transmission peak to the higher line. Capturing images in both states allows you to create dopplergrams to study solar surface velocities.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Quantum Sodium D filter suitable for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is designed for both photographic and visual use. A key advantage of observing in the Sodium D line compared to other narrow wavelengths like Calcium K is its brightness. This makes for a more comfortable and detailed visual experience, allowing you to see features like granulation directly through the \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the view of a solar flare's footpoints differ through this Sodium D filter versus an H-alpha filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Sodium D filter excels at showing the very base of a flare, where energy heats the lower chromosphere. You would see these \"footpoints\" as intensely bright, compact kernels. In H-alpha, you would see the subsequent plasma eruption and the overarching magnetic loops of the flare higher in the chromosphere, but the initial origin points at the surface would be less distinct.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar Quantum Sodium D filter for observing anything besides the Sun, like the volcanoes on Io?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a known research application, but it requires a very large aperture telescope. The volcanic plumes of Jupiter's moon Io emit light in the Sodium D line. With a sufficiently large instrument, this filter can be used to isolate and image that faint emission against the dark sky, a task impossible with standard filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eQuantum Solar Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget Wavelength\u003c\/td\u003e\n\u003ctd\u003eSodium D Line (5890.0 or 5895.9Å)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass\u003c\/td\u003e\n\u003ctd\u003e0.4Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003eProfessional Edition (PE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eSolar Chromosphere Observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eObserving Method\u003c\/td\u003e\n\u003ctd\u003eVisual and Photographic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eUnheated on the lower Na D line, heated for the higher line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength\u003c\/td\u003e\n\u003ctd\u003e589.00 or 589.59\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Quantum Sodium D Solar Filter - 0.4Å PE Grade\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.daystarfilters.com\/downloads\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967464927517,"sku":"DAY-NAD.4UNI","price":25186.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Quantum-Sodium-D-Solar-Filter__11147.1597164664.1280.1280.jpg?v=1684342503"},{"product_id":"daystar-front-gold-side-sct-to-t-snout-jingly-ring","title":"Daystar Front Gold Side SCT to T Snout - Jingly Ring","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects SCT-threaded components to T-threaded accessories\u003c\/li\u003e\n\u003cli\u003eDesigned for Daystar solar filter systems\u003c\/li\u003e\n\u003cli\u003eFits the Q3GWTF Quantum Front Wedge Plate\u003c\/li\u003e\n\u003cli\u003eMachined for precise and secure connections\u003c\/li\u003e\n\u003cli\u003eOfficial Daystar Part GF2SCTT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eDaystar Front Gold Side SCT to T Snout - Jingly Ring\u003c\/h2\u003e\n      \u003cp\u003eThe Daystar Front Gold Side SCT to T Snout, also known as the \"Jingly Ring,\" is a specialized adapter for integrating Daystar filter systems with common astronomical hardware. This component creates a secure, direct connection between a male SCT thread (2\"-24 TPI) and the male T-thread (M42x0.75) standard on most \u003ca href=\"\/en-int\/collections\/cameras\"\u003eastronomy cameras\u003c\/a\u003e. It is an essential part for building a rigid and reliable solar imaging train.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eThe Essential SCT to T-Thread Connection\u003c\/h3\u003e\n      \u003cp\u003eThis adapter serves a critical function: bridging the gap between the large-format SCT thread, common on the rear of \u003ca href=\"\/en-int\/collections\/schmidt-cassegrain-telescopes\"\u003eSchmidt-Cassegrain telescopes\u003c\/a\u003e and some filter cells, and the universal T-thread used for cameras, \u003ca href=\"\/en-int\/collections\/filter-wheels\"\u003efilter wheels\u003c\/a\u003e, and other imaging accessories. By converting the threads, it lets you mount a Daystar Quantum, through its Q3GWTF Front Wedge Plate, directly on the rear thread of an SCT.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eIntegrating Daystar Systems with the \"Jingly Ring\"\u003c\/h3\u003e\n      \u003cp\u003eAs an official Daystar component (part number GF2SCTT), this T-snout is designed to work seamlessly within their ecosystem of \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filters\u003c\/a\u003e and accessories. While known colloquially as the \"Jingly Ring,\" its purpose is precise mechanical adaptation. It ensures correct spacing and a solid, non-flexing link in your imaging train, which is critical for maintaining focus and alignment during solar observation.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary function of the Daystar \"Jingly Ring\" adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Daystar \"Jingly Ring\" is an adapter that converts male \u003cstrong\u003eSCT threads\u003c\/strong\u003e (2\"-24 TPI) to male \u003cstrong\u003eT-threads\u003c\/strong\u003e (M42x0.75). Its main purpose is to mount the Gold (Sun) side of a Daystar Quantum, fitted with the Q3GWTF Front Wedge Plate, on a telescope that uses the SCT thread standard.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the SCT to T Snout to image the Sun with my 8\" SCT?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe snout's male T-thread screws into the female T-thread of the Q3GWTF Front Wedge Plate on the Gold (Sun) side of your Daystar Quantum, and its SCT side threads onto the rear of your SCT. The wedge plate is for off-axis SCT applications. Your camera or \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e then attaches to the Red (eye) side of the filter.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Jingly Ring compatible with non-Daystar equipment?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. While designed for the Daystar ecosystem, the adapter uses industry-standard threads. It will work with any components that have a standard male SCT thread on one side and require a male T-thread connection on the other.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter add significant length or back focus to the imaging train?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eLike any adapter, the Daystar SCT to T Snout adds some physical length to the optical path. While the exact optical length is not specified, it is designed to be as minimal as possible. You must account for this added length when calculating your back focus requirements, especially in systems with reducers or other corrective optics.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is this Daystar adapter called the \"Jingly Ring\"?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\"Jingly Ring\" is the informal, colloquial name Daystar uses for this specific SCT to T-snout adapter, part number GF2SCTT. It helps distinguish this particular adapter from other threaded rings in their product line.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Daystar SCT to T Snout for visual observing?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The snout sits on the telescope (Gold) side of the Quantum, so it serves visual and imaging use alike; the eyepiece or camera attaches to the Red (eye) side of the filter with a rear adapter.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eGF2SCTT\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eConnection 1\u003c\/td\u003e\n\u003ctd\u003eSCT Thread (2\"-24 TPI)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eConnection 2\u003c\/td\u003e\n\u003ctd\u003eT-Thread (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eThread converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eDaystar SCT to T Snout Adapter\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967465353501,"sku":"DAY-GF2SCTT","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-GF2SCTT__98361.1650569837.1280.1280.jpg?v=1684342515"},{"product_id":"daystar-front-gold-side-1-25-drawtube-snout","title":"Daystar Front Gold Side 1.25\" Drawtube Snout","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eGenuine Daystar OEM Replacement Part\u003c\/li\u003e\n\u003cli\u003e1.25\" Drawtube Snout\u003c\/li\u003e\n\u003cli\u003eDesigned for Front, Gold Side Applications\u003c\/li\u003e\n\u003cli\u003ePart Number: GM1D1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eDaystar Front Gold Side 1.25\" Drawtube Snout\u003c\/h2\u003e\n      \u003cp\u003eThis Daystar Front Gold Side 1.25\" Drawtube Snout is a genuine OEM replacement part designed for specific Daystar \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e and telescope systems. Identified by part number GM1D1, it ensures a perfect fit and maintains the optical alignment for equipment requiring a front-mounted, gold-side, 1.25\" drawtube.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA Genuine 1.25\" Replacement Part for Daystar Solar Systems\u003c\/h3\u003e\n      \u003cp\u003eMaintain the integrity of your specialized solar observation equipment with this official Daystar replacement part. Using the correct GM1D1 drawtube snout guarantees compatibility and preserves the precise optical tolerances required for high-resolution solar viewing. This part mounts on the Gold (Sun) side of a Daystar Quantum through the Q3GF1F Quantum Front Flat Plate.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the Daystar Front Gold Side 1.25\" Drawtube Snout used for?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003eDaystar GM1D1 Drawtube Snout\u003c\/strong\u003e is a genuine replacement part for specific Daystar solar filters or telescopes. It threads into the female 1.375\" x 24 threads of the Q3GF1F Quantum Front Flat Plate on the Gold (Sun) side of the filter and provides the 1.25\" drawtube that slides into the telescope's focuser.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Daystar drawtube snout fit my Quantum SE filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe GM1D1 is the 1.25\" snout accepted by the Q3GF1F Quantum Front Flat Plate, which has female 1.375\" x 24 threads. If your Quantum uses that front plate, this is the matching snout.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need the \"Front, Gold Side\" version of the Daystar drawtube snout?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \"Front, Gold Side\" designation refers to the side of the filter the part mounts on: Daystar filters are installed Gold side towards the Sun and Red side towards the eye. Please inspect your current setup to verify that the part you are replacing is mounted on the Gold (Sun) side of the filter. If you are uncertain, contacting Daystar Filters with your product's serial number is the best way to confirm the correct replacement part.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I use a genuine Daystar replacement part like the GM1D1 snout?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eUsing genuine Daystar parts ensures that the mechanical fit, threading, and material specifications match the original design. For sensitive optical instruments like \u003ca href=\"\/en-int\/collections\/solar-telescopes\"\u003esolar telescopes\u003c\/a\u003e, even minor deviations in third-party parts can lead to alignment issues, instability, or damage. An OEM part guarantees correct function.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \n  \n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" accessories with this Daystar 1.25\" drawtube snout?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. This is a 1.25\" drawtube snout for the telescope side of the filter. For a 2\" drawtube, use the GM2DT 2\" drawtube snout (discontinued, limited availability) with the Q3GFTF Front Flat T Plate.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \n    \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eGM1D1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003e1.25\" drawtube snout (Front, Gold Side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Drawtube Snout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-side connection\u003c\/td\u003e\n\u003ctd\u003e1.375\"-24 Male (fits Q3GF1F plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Front Gold Side 1.25\" Drawtube Snout\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967465419037,"sku":"DAY-GM1D1","price":83.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"daystar-front-gold-side-2-drawtube-snout-t-thread","title":"Daystar Front Gold Side 2\" Drawtube Snout - T-Thread","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFits standard 2-inch focusers and visual backs\u003c\/li\u003e\n\u003cli\u003eProvides a male T-thread (M42x0.75) output\u003c\/li\u003e\n\u003cli\u003eDesigned for front-mounting on Daystar filter systems\u003c\/li\u003e\n\u003cli\u003eEnsures a rigid, non-flexing connection for imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Front Gold Side 2\" Drawtube Snout - T-Thread\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Front Gold Side 2\" Drawtube Snout is an essential adapter for securely mounting your Daystar \u003ca href=\"\/en-int\/collections\/solar-filters\"\u003esolar filter\u003c\/a\u003e, providing a male T-thread that screws into the female T-thread of the Q3GFTF Quantum Front Flat T Plate. This component fits into any standard 2-inch \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e or \u003ca href=\"\/en-int\/collections\/visual-adapters\"\u003evisual back\u003c\/a\u003e, ensuring a rigid and properly aligned optical train for high-resolution solar imaging. The GM2DT is discontinued, with limited availability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Connection for Daystar Filters with T-Threads\u003c\/h3\u003e\n\u003cp\u003eThis drawtube snout links the Gold (Sun) side of your Daystar Quantum to your telescope: its male T-thread screws into the female T-thread of the Q3GFTF Quantum Front Flat T Plate (or the Q3GWTF Front Wedge Plate for off-axis SCT use), and its male 2\" drawtube slides into your telescope's 2\" focuser.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Focuser Integration:\u003c\/strong\u003e Slides into any standard 2-inch focuser or accessory holder, providing a stable base for your filter system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT-Threaded Output:\u003c\/strong\u003e Offers a male T-thread (M42x0.75) that screws into the female T-thread of the Q3GFTF Quantum Front Flat T Plate or the Q3GWTF Quantum Front Wedge Plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaystar System Compatibility:\u003c\/strong\u003e Specifically designed as the \"Gold Side\" front adapter for compatible Daystar filter systems, ensuring correct fit and function.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Daystar 2\" Drawtube Snout?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Daystar 2\" Drawtube Snout is a mechanical adapter. Its primary function is to connect the Gold (Sun) side of a Daystar Quantum to a telescope's 2-inch focuser: its male T-thread screws into the Q3GFTF Front Flat T Plate and its male 2\" drawtube slides into the focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Daystar Front Gold Side Drawtube Snout?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter threads onto the front (telescope side) of a compatible Daystar filter. The 2-inch barrel then slides into your telescope's focuser or visual back and is secured by the focuser's set screws or compression ring. Your camera or \u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e attaches to the Red (eye) side of the filter, not to this snout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"Front Gold Side\" mean for this Daystar adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \"Front Gold Side\" designation indicates that this adapter is intended for the front of the Daystar filter—the side that faces the telescope's objective lens. Daystar uses a color-coded system for its adapters to ensure correct placement in the optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat connects to the T-thread on this Daystar snout?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe male T-thread screws into the female T-thread (M42x0.75) of the Q3GFTF Quantum Front Flat T Plate or the Q3GWTF Quantum Front Wedge Plate on the Gold (Sun) side of the filter. Cameras attach on the Red (eye) side of the filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I use this threaded Daystar snout instead of a standard 2\" nosepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Quantum front plates Q3GFTF and Q3GWTF have a female T-thread, and the GM2DT gives them a male 2\" drawtube for a 2\" focuser. The GM2DT fits with the Q3GFTF Front, Gold plate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Daystar adapter suitable for visual observing with an eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This snout mounts on the telescope (Gold) side of the filter, so it serves visual and imaging use alike; the eyepiece or camera attaches to the Red (eye) side of the filter with a rear adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eGM2DT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003e2\" drawtube snout (Front, Gold Side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-side connection\u003c\/td\u003e\n\u003ctd\u003e2\" Drawtube Snout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera-side connection\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 (T2) Male (fits Q3GFTF \/ Q3GWTF plate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Front Gold Side 2\" Drawtube Snout - T-Thread\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967465517341,"sku":"DAY-GM2DT","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-GM2DT__25319.1650569853.1280.1280.jpg?v=1684342517"},{"product_id":"daystar-red-side-plate-for-mounting-4x-powermate","title":"Daystar Red Side Plate for Mounting 4X Powermate","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts the TeleVue 4X Powermate to Daystar Quantum or ION filters\u003c\/li\u003e\n\u003cli\u003eCreates a shorter, more rigid optical train\u003c\/li\u003e\n\u003cli\u003eFeatures a male M48x0.75 thread and 3-hole bolt pattern\u003c\/li\u003e\n\u003cli\u003eMeasures 3 inches in diameter and 0.67 inches thick\u003c\/li\u003e\n\u003cli\u003eEliminates the need for a separate PMT adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eDaystar Red Side Plate for Mounting 4X Powermate\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Red Side Plate for Mounting 4X Powermate provides a secure, direct connection between a TeleVue 4X Powermate and Daystar Quantum or ION filters using a male M48x0.75 thread and a 3-hole bolt pattern. Measuring just 0.67\" thick with a 3\" diameter, this 0.13 lb plate replaces bulkier adapters to significantly shorten and stiffen your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Direct, Secure M48x0.75 Connection for the 4X Powermate\u003c\/h3\u003e\n\u003cp\u003eThis plate is engineered for a perfect fit on the RED (\u003ca href=\"\/en-int\/collections\/eyepieces\"\u003eeyepiece\u003c\/a\u003e) side of your Daystar Quantum or ION filter. Installation is straightforward: simply unscrew the standard 2\" female drawtube from your TeleVue 4X Powermate, screw it to this adapter plate via the M48x0.75 male thread, and then attach the entire assembly to the filter using the three-hole bolt pattern for a solid, non-rotating connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA 0.67-Inch Plate for a Shorter Imaging Train\u003c\/h3\u003e\n\u003cp\u003eAt only 0.67\" thick, the Red Side Plate minimizes the distance between your filter and the Powermate's 2\" drawtube. A shorter optical path is critical in high-magnification solar imaging, as it reduces \u003ca href=\"\/en-int\/collections\/focusers\"\u003efocuser\u003c\/a\u003e flexure and the potential for optical tilt, ensuring your images remain as sharp as possible. This compact design can also help you reach focus on systems with limited back-focus travel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRed Side Plate vs. Standard Adapters: A 3-Hole Bolted Solution\u003c\/h3\u003e\n\u003cp\u003eUnlike generic adapters that rely on multiple threaded connections or thumbscrews, the Daystar Red Side Plate uses a direct, 3-hole bolted mount. This method eliminates a common source of flexure and instability present in longer, multi-part adapter setups. By creating a single, rigid unit with your filter and Powermate, you achieve a more robust imaging platform that holds collimation and focus more reliably through long sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Daystar Red Side Plate with my 4X Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is simple. First, unscrew the 2\" female drawtube from your TeleVue 4X Powermate. Next, screw that same drawtube onto the male M48x0.75 thread of the Red Side Plate. Finally, attach the plate to the RED (eyepiece) side of your Daystar Quantum or ION filter using three screws through the provided bolt holes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of using the Daystar Red Side Plate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is creating a \u003cstrong\u003eshorter and more rigid optical train\u003c\/strong\u003e. This minimizes mechanical flexure, which is crucial for maintaining sharp focus during high-magnification solar imaging. It replaces longer, less stable adapter combinations and eliminates the need for a separate PMT adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Daystar Red Side Plate compatible with the 2X or 2.5X Powermate?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this plate is specifically designed to adapt the \u003cstrong\u003eTeleVue 4X Powermate\u003c\/strong\u003e to Daystar Quantum or ION filters. It is not compatible with other Powermate models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich side of my Quantum filter does the Daystar Red Side Plate attach to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe plate attaches to the \u003cstrong\u003eRED (eyepiece) side\u003c\/strong\u003e of your Daystar Quantum or ION filter. This is the output side where you would normally place an eyepiece or camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging solar prominences with an ION filter and 4X Powermate on my f\/7 refractor. Why is this plate a better choice?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor high-resolution solar work, mechanical stability is key. The Daystar Red Side Plate's direct 3-hole bolt-on connection minimizes flexure far better than standard adapters that use thumbscrews or long threaded barrels. This ensures the entire imaging train remains perfectly aligned, which is critical for capturing fine detail in prominences and on the solar disk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eTeleVue 4X Powermate, Daystar Quantum \u0026amp; ION Filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter-Side Mount\u003c\/td\u003e\n\u003ctd\u003e3-Hole Bolt Pattern\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowermate-Side Thread\u003c\/td\u003e\n\u003ctd\u003eMale M48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e0.67\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.13 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVendor Part Number\u003c\/td\u003e\n\u003ctd\u003eQ34XRD2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKind\u003c\/td\u003e\n\u003ctd\u003eThread converter plate (Red side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDaystar Red Side Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"Default Title","offer_id":44967465582877,"sku":"DAY-Q34X2D2","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Daystar-Q34X2D2__09264.1597162436.1280.1280.jpg?v=1684342512"}],"url":"https:\/\/davidastro.com\/en-int\/collections\/solar-astronomy.oembed?page=8","provider":"David Astro","version":"1.0","type":"link"}