{"product_id":"daystar-solar-system-filter-wheel","title":"Daystar Solar System Filter Wheel","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eHouses up to four independent, electronically tuned solar filters\u003c\/li\u003e\n\u003cli\u003eSwitches between filters in less than three seconds\u003c\/li\u003e\n\u003cli\u003eChoose a loaded configuration or an empty housing for filters you already own\u003c\/li\u003e\n\u003cli\u003eRequires an F\/27-F\/35 focal ratio for optimal results\u003c\/li\u003e\n\u003cli\u003eWeighs 5 lb 2 oz (2.3 kg) fully loaded\u003c\/li\u003e\n\u003cli\u003eControlled via RS-232 serial port with included Windows software\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 Solar System Filter Wheel\u003c\/h2\u003e\n\u003cp\u003eThe DayStar Solar System Filter Wheel houses up to four distinct, independently controlled solar filters in a single 5 lb 2 oz unit, switching between them in less than three seconds. It is available loaded with either a two-filter or a four-filter set, or as an empty housing into which DayStar moves Quantum, ATM or University filters you already own. Any configuration works on compatible telescopes from 60mm to 155mm+ aperture, powered by a 10-30VDC input and controlled via an RS-232 serial port.\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\u003eThree Ways to Buy: Loaded Configurations or Housing Only\u003c\/h3\u003e\n\u003cp\u003eAll three options share the same housing, electronics and control software. What changes is which etalons are installed when it arrives.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing only (existing optics moved):\u003c\/strong\u003e the wheel arrives loaded with filters you already own. DayStar installs, aligns and calibrates your existing Quantum, ATM or University cores into the housing, preserving your original investment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5Å SE Ha \/ 2Å CaK:\u003c\/strong\u003e a two-filter set pairing a Hydrogen-Alpha view of the chromosphere with a Calcium-K view of the upper photosphere, the two most commonly compared solar wavelengths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.4Å PE Ha \/ 0.7Å PE Ha \/ 0.4Å PE NaD \/ 5Å CaH:\u003c\/strong\u003e the full four-filter research set, with two H-alpha bandpasses plus Sodium-D and Calcium-H, all in PE grade.\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\u003eMulti-Wavelength Solar Imaging: Sub-3-Second Switching\u003c\/h3\u003e\n\u003cp\u003eThis filter wheel eliminates the need for multiple dedicated solar telescopes by consolidating several separate imaging systems into one. In less than three seconds you can switch from a high-contrast Hydrogen-Alpha view of the chromosphere to the very different structures visible in Sodium-D, Calcium-H or Calcium-K. This capability is transformative for educational outreach and scientific comparison, allowing you to show how solar flares and filaments appear across different spectral lines on a single 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\u003eIndependent Quantum Cores: Precision Etalon Control on Every Channel\u003c\/h3\u003e\n\u003cp\u003eUnlike a simple mechanical wheel, this system is an integrated housing for up to four independent, heated DayStar Quantum etalons. Each filter position has its own dedicated precision tuning control, allowing you to digitally shift the bandpass to observe Doppler-shifted features moving toward or away from you. This is the same robust control trusted by professional observatories, now available for several different wavelengths at the touch of a button.\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 Integration: Achieving the F\/30 Ratio on 60mm-155mm+ Telescopes\u003c\/h3\u003e\n\u003cp\u003eThe DayStar filter wheel is designed for telescopes with apertures of 60mm to 155mm or more, but it requires a highly collimated beam of light to function correctly. The system performs best at a final focal ratio of F\/30, within a recommended range of F\/27-F\/35. Achieving this typically requires a 4x telecentric Barlow lens for an F\/7.5 refractor. The trade-off for multi-wavelength access is this strict optical requirement, for which a high-quality apochromatic refractor is recommended to ensure 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\u003eExpandable Architecture: Start with 2 Positions, Grow to 4\u003c\/h3\u003e\n\u003cp\u003eThe Solar System Filter Wheel is designed for long-term investment and growth. You can start with as few as two filter positions filled and return the wheel to the DayStar factory later to add a third or fourth filter. This modular approach allows you to build your multi-wavelength system over time rather than committing to the full four-filter set up front.\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 filter wheel configuration should I order?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf you already own Quantum, ATM or University filters, order the \u003cstrong\u003ehousing only\u003c\/strong\u003e option and DayStar will move your existing optics into it. If you are starting fresh and want the two most-compared solar wavelengths, order the \u003cstrong\u003e0.5Å Ha \/ 2Å CaK\u003c\/strong\u003e set. If you want the full research instrument, the \u003cstrong\u003efour-filter PE set\u003c\/strong\u003e adds a second H-alpha bandpass plus Sodium-D and Calcium-H. Any configuration can be returned to the factory later to fill its remaining positions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the DayStar Filter Wheel achieve the required F\/30 focal ratio on my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter wheel itself does not alter the focal ratio. You must use an external Barlow or telecentric lens to slow your telescope's native focal ratio to the required F\/27-F\/35 range. For example, an f\/8 refractor would need approximately a 4x Barlow to reach f\/32. Using a high-quality, telecentric amplifier is recommended to ensure the light rays are parallel through the etalon for the best image contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I install my existing DayStar Quantum filter into the Solar System Filter Wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. That is exactly what the \u003cstrong\u003ehousing only\u003c\/strong\u003e configuration is for: DayStar moves existing Quantum, ATM or University series filters into the filter wheel housing, so you can integrate filters you already own into this multi-wavelength system. You would coordinate the transfer directly with DayStar Filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of having both 0.4Å and 0.7Å H-alpha filters in the four-filter set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe two Hydrogen-Alpha filters offer different views of the sun's chromosphere.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.4Å H-alpha:\u003c\/strong\u003e This narrower bandpass provides higher contrast on surface details like filaments, plage, and spicules. It is ideal for detailed study of the solar disk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.7Å H-alpha:\u003c\/strong\u003e This wider bandpass is brighter and better suited for viewing prominences extending off the limb of the sun, which can be fainter and require more light throughput.\u003c\/li\u003e\n\u003c\/ul\u003e\nHaving both allows you to switch instantly between a high-contrast disk view and a bright prominence view.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eFor an outreach event with a 120mm refractor, how does the DayStar Filter Wheel simplify showing the Sun in different wavelengths?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe DayStar Filter Wheel is ideal for outreach. Instead of setting up three or four separate telescopes, you use one 120mm refractor (with the appropriate telecentric to reach F\/30). With the press of a button, you can switch the view from Hydrogen-Alpha to Calcium in under three seconds. This allows you to directly compare how features like active regions appear in different spectral lines, providing a much more dynamic and educational experience for the public without the logistical complexity of multiple rigs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes each filter position in the DayStar wheel have its own independent temperature tuning?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Each filter slot is a fully independent Quantum filter core with its own precision heating and control system. When you select a filter, the wheel applies power and control to that specific etalon. This ensures that each filter is perfectly on-band and allows for wing-shifting, just like a standalone DayStar Quantum filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I buy the filter wheel with two filters, what is the process to add a third or fourth later?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo add filters, the wheel must be returned to the DayStar factory. Their technicians will install, align, and calibrate the new filter cores into the empty slots in the housing. This ensures that each filter performs to specification within the integrated system. You would purchase the new filter and arrange the upgrade service directly with DayStar.\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 Configurations\u003c\/td\u003e\n\u003ctd\u003eHousing only (existing optics moved); 0.5Å SE Ha \/ 2Å CaK; or 0.4Å PE Ha \/ 0.7Å PE Ha \/ 0.4Å PE NaD \/ 5Å CaH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Positions\u003c\/td\u003e\n\u003ctd\u003eMinimum two, maximum four\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Change Time\u003c\/td\u003e\n\u003ctd\u003eLess than three seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eRefractor, SCT, Maksutov (with sufficient focus travel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Aperture\u003c\/td\u003e\n\u003ctd\u003e60mm - 155mm+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal Focal Ratio\u003c\/td\u003e\n\u003ctd\u003eF\/30 (Recommended Range: F\/27-F\/35)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eAccepts standard Quantum plates (T-thread, SCT thread, or 2\" drawtube)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Interface\u003c\/td\u003e\n\u003ctd\u003eRS-232 serial port (Quantum Control software for Windows)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e10-30VDC, 2.5 amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Power Supply\u003c\/td\u003e\n\u003ctd\u003eInternational AC adapter with US\/UK\/European\/Australian cords\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e7\" x 7.75\" x 2.3\" (178 x 197 x 58mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5 lb 2 oz (2.3 kg) fully loaded\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\/Daystar_Filters_Filter_Wheel_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":"Housing Only (existing optics moved)","offer_id":52935165313309,"sku":"DAY-FW-upgrade","price":8538.0,"currency_code":"USD","in_stock":true},{"title":"0.5Å Ha \/ 2Å CaK","offer_id":52935165346077,"sku":"DAY-FW-05SHa-2CaK","price":21587.5,"currency_code":"USD","in_stock":true},{"title":"0.4Å PE Ha \/ 0.7Å PE Ha \/ 0.4Å PE NaD \/ 5Å CaH","offer_id":52935165378845,"sku":"DAY-FW-04PHa-07SHa-04PNaD-5CaH","price":51672.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/DaystarFilters-DayStar-Solar-System-Filter-Wheel-1-FW-upgrade_7ee8d572-3d1e-47ee-be94-1338a2ef476c.jpg?v=1789520819","url":"https:\/\/davidastro.com\/en-us\/products\/daystar-solar-system-filter-wheel","provider":"David Astro","version":"1.0","type":"link"}