{"title":"Visual Accessories","description":"\u003cdiv\u003e\n  \u003cp\u003e\n    Optical accessories are what turn one telescope into several. The same optical tube can be a wide-field imaging refractor, a high-power planetary instrument or a comfortable binocular-view visual scope depending on what you put behind it. David Astro carries a deep selection of eyepieces, diagonals, Barlows, reducers, flatteners, binoviewers and correctors in Canada, held in Canadian stock.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Our team uses this equipment on our own telescopes, so the advice you get is based on what actually works at a given focal ratio and under a given sky, not on a spec sheet. If you are deciding between two focal lengths or wondering whether a corrector will help your optic, ask us before you order.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- more --\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eChoosing Optical Accessories That Match Your Telescope\u003c\/h2\u003e\n  \u003cp\u003e\n    Every accessory in this collection modifies the light cone before it reaches your eye or sensor. The right choice depends almost entirely on your telescope's focal ratio, focal length and back-focus budget.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-us\/collections\/eyepieces\"\u003eEyepieces:\u003c\/a\u003e\u003c\/strong\u003e Focal length sets magnification against your telescope's focal length; apparent field and eye relief determine how comfortable that magnification is to use.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-us\/collections\/diagonals\"\u003eDiagonals:\u003c\/a\u003e\u003c\/strong\u003e Dielectric mirrors typically exceed 99% reflectivity; prisms can outperform them at f\/10 and slower on planetary targets but introduce chromatic effects in fast refractors.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-us\/collections\/barlows-and-extenders\"\u003eBarlow lenses and extenders:\u003c\/a\u003e\u003c\/strong\u003e Multiply focal length for planetary work and push the focal plane outward, which is often the cheapest fix for a scope that will not reach focus with a diagonal.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-us\/collections\/correctors-and-reducers\"\u003eField flatteners and reducers:\u003c\/a\u003e\u003c\/strong\u003e Correct field curvature and coma across large sensors; each has a fixed back-focus that must be hit precisely.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-us\/collections\/binoviewers\"\u003eBinoviewers:\u003c\/a\u003e\u003c\/strong\u003e Two-eye viewing that dramatically improves perceived detail on the Moon and planets, at the cost of significant added optical path.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"\/en-us\/collections\/finder-scopes\"\u003eFinders and reflex sights:\u003c\/a\u003e\u003c\/strong\u003e Acquisition optics — the accessory most often skipped and most often missed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eWhy Choose David Astro for Optical Accessories\u003c\/h2\u003e\n  \u003cp\u003e\n    Optics are easy to buy badly. A well-reviewed eyepiece can still be the wrong eyepiece for your focal ratio, exit pupil or sky.\n  \u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFocal length guidance:\u003c\/strong\u003e We help you build a spaced eyepiece set rather than three focal lengths that overlap, and we calculate exit pupil against your aperture and typical seeing.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCorrector matching:\u003c\/strong\u003e We confirm that a flattener or reducer is designed for your telescope's focal ratio before you buy, since a mismatched corrector degrades a field rather than fixing it.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAuthorized dealer:\u003c\/strong\u003e Full manufacturer warranty and verified authenticity on everything we list.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCanadian stock:\u003c\/strong\u003e In-stock optics ship from Canada, with no surprise duties or brokerage fees for Canadian customers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eService and support after the sale:\u003c\/strong\u003e In-house diagnostics if something is not performing as expected.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eOptical Accessories in Canada — Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003e\u003cstrong\u003eWill a premium eyepiece improve a modest telescope?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eUsually yes at the edges of the field, especially in fast telescopes below f\/6 where simpler designs struggle. On the axis at f\/10, the difference between a good eyepiece and a premium one is much smaller.\u003c\/dd\u003e\n    \u003cdt\u003e\u003cstrong\u003eHow do I know if I need a flattener or a reducer?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eA flattener corrects curvature at the same focal length. A reducer also shortens focal length, widening the field and speeding the system. If your stars are elongated only in the corners, you need a flattener; if you also want more field, a reducer.\u003c\/dd\u003e\n    \u003cdt\u003e\u003cstrong\u003eDo binoviewers work in every telescope?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eThey add roughly 100 mm or more of optical path, so most refractors need a corrector or a Barlow-style element to reach focus. Schmidt-Cassegrains generally accommodate them without modification.\u003c\/dd\u003e\n    \u003cdt\u003e\u003cstrong\u003eIs everything shipped domestically?\u003c\/strong\u003e\u003c\/dt\u003e\n    \u003cdd\u003eYes. Anything shown as in stock is held in Canada and ships without customs delays for Canadian orders.\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eMatch the accessory to the optic\u003c\/h2\u003e\n  \u003cp\u003eTell us your telescope and what you want to see, and we will recommend the right combination. Ships from Canada.\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"celestron-basic-smartphone-adapter-1-25","title":"Celestron Basic Smartphone Adapter, 1.25”","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects smartphones to eyepieces with a 29mm - 45mm outer diameter\u003c\/li\u003e\n\u003cli\u003eSecurely holds phones from 56mm to 97mm wide\u003c\/li\u003e\n\u003cli\u003eEnables afocal photography (digiscoping) through telescopes, binoculars, and more\u003c\/li\u003e\n\u003cli\u003eDurable cast metal frame weighs just 6 oz (170.1 g)\u003c\/li\u003e\n\u003cli\u003eSimple, manual adjustment for quick setup in the field\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 Basic Smartphone Adapter, 1.25”\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Basic Smartphone Adapter turns your optic into an imaging system, connecting phones from 56mm to 97mm wide to any eyepiece with an outer diameter between 29mm and 45mm. This simple, 6 oz cast metal adapter is a straightforward tool for capturing images of the Moon, wildlife, or microscope specimens directly through your eyepiece. Its closed dimensions of 177.8mm x 101.6mm x 38.1mm make it a compact addition to any field kit.\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\u003eFits Eyepieces from 29mm to 45mm in Diameter\u003c\/h3\u003e\n\u003cp\u003eThis adapter's core function is its ability to clamp securely onto a wide range of optics. The eyepiece clamp accommodates any eyepiece with an outer diameter from 29mm to 45mm, a range that includes most standard 1.25\" telescope eyepieces, as well as the eyepieces found on many binoculars, spotting scopes, and microscopes. A simple thumb screw mechanism tightens the clamp for a firm, reliable grip on the eyepiece, ensuring your phone stays aligned.\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 56mm to 97mm Clamp for Modern Smartphones\u003c\/h3\u003e\n\u003cp\u003eDesigned for modern devices, the phone clamp adjusts from 56mm to 97mm wide. This range accommodates the vast majority of current smartphones, even many larger \"plus\" or \"max\" sized models. Tightening knobs lock the phone securely in place, so you can focus on aligning the camera with the eyepiece without worrying about the device slipping. Note that bulky, folio-style cases may need to be removed to ensure a proper fit.\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\u003e6 oz Cast Metal Body with Manual Alignment\u003c\/h3\u003e\n\u003cp\u003eBuilt for durability and ease of use, the adapter features a cast metal frame that weighs only 6 oz (170.1 g), adding minimal weight to your setup. Adjustments are entirely manual, providing a simple, hassle-free way to position your phone's camera over the eyepiece. Once aligned, you can capture images and video, or even text a photo to a friend, all while the phone remains mounted to your optic.\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 Celestron Basic Smartphone Adapter fit my 1.25\" and 2\" telescope eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is designed for eyepieces with an outer diameter between \u003cstrong\u003e29mm and 45mm\u003c\/strong\u003e. This covers most 1.25\" eyepieces. However, it is generally not compatible with 2\" eyepieces, as their outer housings are typically much larger than 45mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan this adapter hold a large phone like an iPhone Pro Max or Samsung Galaxy Ultra?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The phone clamp has a range of \u003cstrong\u003e56mm to 97mm (2.20\" – 3.81\")\u003c\/strong\u003e. Most large flagship phones fall within this range, but you should measure your phone's width (with its case, if you intend to use one) to confirm it will fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to remove my phone case to use the Celestron Basic Smartphone Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on the case. While the adapter can accommodate many standard cases, very large or bulky ones (especially folio-style cases that cover the screen) may prevent the phone from fitting securely in the clamp and should be removed before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it difficult to align my phone's camera with the eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAlignment is a manual process. The simplest method is to turn on your phone's camera, hold the phone in the clamp over the eyepiece, and move it until you see the circular image from the eyepiece centered on your screen. Once you find the spot, tighten the clamp onto the eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter for imaging the Sun through my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eAbsolutely not\u003c\/strong\u003e, unless you have a proper, full-aperture solar filter designed specifically for your telescope installed over the front of the optic. Never look at the Sun or point an unfiltered optic at the Sun. Doing so can cause permanent damage to your eyes, your camera, and your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of optics is the Celestron Basic Smartphone Adapter compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is compatible with a wide range of instruments, including most \u003cstrong\u003etelescopes, binoculars, spotting scopes, monoculars, and microscopes\u003c\/strong\u003e, as long as their eyepiece has an outer diameter between 29mm and 45mm. It is not designed for use with riflescopes.\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\u003eCompatible Optics\u003c\/td\u003e\n\u003ctd\u003eTelescopes, Binoculars, Spotting Scopes, Monoculars and Microscopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Clamp Style\u003c\/td\u003e\n\u003ctd\u003eThumb screw Hex shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Clamp Range\u003c\/td\u003e\n\u003ctd\u003e29mm - 45mm (1.14\" - 1.77\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhone Clamp Style\u003c\/td\u003e\n\u003ctd\u003eThumb screw adjusting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhone Clamp Range\u003c\/td\u003e\n\u003ctd\u003e56mm - 97mm (2.20\" – 3.81\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFine Adjustment Style\u003c\/td\u003e\n\u003ctd\u003eManually (no slow motion controls)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eCast Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (Closed)\u003c\/td\u003e\n\u003ctd\u003e177.8mm x 101.6mm x 38.1mm (7\" x 4\" x 1.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e6 oz (170.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Warning\u003c\/td\u003e\n\u003ctd\u003eNever use without a proper solar filter. See manual for details.\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\"\u003eCelestron Basic Smartphone Adapter, 1.25”\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\/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":44967142261021,"sku":"CEL-81035","price":29.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-Basic-Smartphone-Adapter-1-25-inch-81035-1__15283.1594229162.1280.1280.jpg?v=1684337055"},{"product_id":"celestron-nexyz-3-axis-universal-smartphone-adapter","title":"Celestron NexYZ 3-Axis Universal Smartphone Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003ePatented 3-axis rack and pinion smartphone alignment\u003c\/li\u003e\n\u003cli\u003eFits eyepieces from 35mm to 60mm in diameter\u003c\/li\u003e\n\u003cli\u003eIncludes adapters to fit microscope eyepieces down to 25mm\u003c\/li\u003e\n\u003cli\u003eAccommodates smartphones 65mm to 90mm wide\u003c\/li\u003e\n\u003cli\u003eDurable cast metal and fiber-reinforced plastic construction\u003c\/li\u003e\n\u003cli\u003eLightweight at just 10 oz (283 g)\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 NexYZ 3-Axis Universal Smartphone Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Celestron NexYZ 3-Axis Universal Smartphone Adapter transforms your smartphone into a powerful imaging tool for nearly any optical instrument. Its patented 3-axis adjustment system provides precise control, while the robust clamps accommodate eyepieces from 25mm to 60mm and phones from 65mm to 90mm wide. Weighing just 10 oz, the NexYZ delivers the stability and precision needed to capture sharp images of everything from lunar craters to microscopic specimens.\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\u003ePatented 3-Axis Adjustment: X, Y, and Z Rack \u0026amp; Pinion Control\u003c\/h3\u003e\n\u003cp\u003eThe core of the NexYZ is its patented three-axis motion control system. While standard adapters only allow for side-to-side (X) and vertical (Y) adjustments, the NexYZ adds a crucial third Z-axis. This allows you to control the distance of your phone's camera from the eyepiece, which is the key to eliminating vignetting and achieving a full, uncropped field of view. The smooth rack and pinion knobs for all three axes enable you to perfectly center your phone's camera over the eyepiece with micrometer-like precision.\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 Fit: Clamps Optics from 25mm to 60mm in Diameter\u003c\/h3\u003e\n\u003cp\u003eEngineered for maximum compatibility, the NexYZ securely attaches to a vast range of optics. The spring-loaded eyepiece clamp has a native range of 35mm to 60mm, covering all standard 1.25\" and 2\" telescope eyepieces, as well as most binoculars and spotting scopes. For smaller optics, the two included adapter rings allow the clamp to grip eyepieces as small as 25mm, making it fully compatible with standard microscopes for digiscoping applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhone Clamp Range (65mm - 90mm):\u003c\/strong\u003e The phone platform easily accommodates today's largest smartphones, often with their cases still on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Hold:\u003c\/strong\u003e A strong internal spring and threaded twist lock on the phone clamp ensure that even heavy devices remain securely in place during use.\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\u003eBuilt for the Field: 10 oz Body with Secure Smartphone Grip\u003c\/h3\u003e\n\u003cp\u003eThe NexYZ is designed for fast, repeatable use in any environment. The entire alignment process—from attaching the phone to centering it on the eyepiece—is remarkably quick and intuitive. This makes it ideal for group settings like star parties or birdwatching outings, where multiple people can swap their phones in and out in seconds with only minor readjustments needed. At only 10 oz (283 g), it adds minimal weight to your setup, and its durable construction of cast metal and fiber-reinforced plastic ensures it can stand up to rigorous field use.\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\u003eNexYZ 3-Axis vs. 2-Axis Adapters: The Z-Axis Advantage\u003c\/h3\u003e\n\u003cp\u003eThe critical difference between the NexYZ and other adapters is the Z-axis knob. Standard 2-axis adapters force you to rely on guesswork to position your phone at the correct distance from the eyepiece, often resulting in frustrating vignetting (a black circle around your image). The NexYZ solves this problem entirely.\u003c\/p\u003e\n\u003cp\u003eWith the Z-axis control, you can precisely move the camera toward or away from the lens until the entire illuminated field of view fills your screen. This patented feature removes the final barrier to achieving consistently sharp, well-framed images and video through your optic, providing a level of control that two-axis systems cannot match.\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 Celestron NexYZ different from cheaper smartphone adapters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe key difference is the \u003cstrong\u003epatented 3-axis adjustment\u003c\/strong\u003e. Most adapters only offer X and Y (side-to-side and up-down) controls. The NexYZ adds a crucial Z-axis, allowing you to adjust the distance from the eyepiece. This third axis is what lets you eliminate vignetting (the black ring around your image) and achieve a perfectly framed shot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the NexYZ securely hold my large phone, like an iPhone Plus or Samsung Galaxy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The phone clamp extends from \u003cstrong\u003e65mm to 90mm (2.55\" to 3.54\")\u003c\/strong\u003e, accommodating most large \"phablet\" style phones. The combination of a strong internal spring and a threaded twist lock provides a secure grip that can easily support the weight of these heavier devices.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to remove my phone case to use the NexYZ?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most standard cases, you do not need to remove them. However, if you use an exceptionally bulky case, such as a folio-style or one with a large integrated battery pack, you may need to remove it for the phone to fit properly in the clamp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Celestron NexYZ with my 8\" SCT to photograph Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The NexYZ's eyepiece clamp range of \u003cstrong\u003e35mm to 60mm\u003c\/strong\u003e fits both 1.25\" and 2\" eyepieces used on Schmidt-Cassegrain telescopes. The precise rack and pinion controls are ideal for centering a small target like Jupiter in the camera's field of view to capture both still images and video.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI lead birdwatching walks. Is the NexYZ practical for sharing views through a spotting scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe NexYZ is perfect for this scenario. Its quick-release, spring-loaded phone clamp makes it incredibly fast to swap different smartphones. After the initial setup on the spotting scope's eyepiece, each person can attach their phone and make minor X\/Y adjustments in seconds to capture their own photo of the view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the NexYZ be used with microscopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The NexYZ includes \u003cstrong\u003etwo adapter rings\u003c\/strong\u003e that reduce the minimum clampable diameter to \u003cstrong\u003e25mm (0.98\")\u003c\/strong\u003e. This allows it to securely attach to standard microscope eyepieces, making it a versatile tool for both astrophotography and microphotography (digiscoping).\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\u003eCompatible Optics\u003c\/td\u003e\n\u003ctd\u003eTelescopes, Binoculars, Spotting Scopes, Monoculars, Microscopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Clamp Range\u003c\/td\u003e\n\u003ctd\u003e35mm - 60mm (1.37\" - 2.36\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin. Eyepiece Size (w\/ Adapters)\u003c\/td\u003e\n\u003ctd\u003e25mm (0.98\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhone Clamp Range\u003c\/td\u003e\n\u003ctd\u003e65mm - 90mm (2.55\" - 3.54\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment Mechanism\u003c\/td\u003e\n\u003ctd\u003e3-Axis (X, Y, Z) Rack and Pinion System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterials\u003c\/td\u003e\n\u003ctd\u003eCast Metal, Fiber-Reinforced Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10 oz (283 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (Closed)\u003c\/td\u003e\n\u003ctd\u003e165.1mm x 139.7mm x 107.95mm (6.50\" x 5.50\" x 4.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Warning\u003c\/td\u003e\n\u003ctd\u003eNever look at the Sun with an optic without a proper solar filter. Refer to included safety instructions.\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=\"Celestron NexYZ 3-Axis Universal Smartphone Adapter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/1242199205_1.jpg?v=1684346765\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNexYZ 3-Axis Universal Smartphone 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\u003cimg class=\"DAV-img-box\" alt=\"Adapter rings for microscope eyepieces\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/celestron-nexyz-microscope-adapter-rings.jpg?v=1782186855\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAdapters for Microscope Eyepieces\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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.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 Software \u0026amp; Manuals\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 Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967142654237,"sku":"CEL-81055","price":93.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-NexYZ-3-Axis-Universal-Smartphone-Adapter-81055-1__11807.1594230228.1280.1280.jpg?v=1684337083"},{"product_id":"celestron-luminos-2-5x-barlow-2","title":"Celestron Luminos 2.5x Barlow - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eInstantly increases eyepiece magnification by 2.5x\u003c\/li\u003e\n\u003cli\u003e4-element apochromatic optics deliver high-contrast, color-correct views\u003c\/li\u003e\n\u003cli\u003eAccepts both 2\" and 1.25\" eyepieces with the included adapter\u003c\/li\u003e\n\u003cli\u003eBrass compression ring secures eyepieces without scratching barrels\u003c\/li\u003e\n\u003cli\u003eThreaded to accept standard 2\" astronomy filters\u003c\/li\u003e\n\u003cli\u003e28mm clear aperture minimizes vignetting with wide-field eyepieces\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 Luminos 2.5x Barlow Lens - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Luminos 2.5x Barlow Lens boosts the power of any 2\" or 1.25\" eyepiece by a factor of 2.5, using a 4-element apochromatic optical design to maintain sharp, color-pure images. With a generous 28mm clear aperture and fully multi-coated optics, this Barlow provides a significant magnification increase without introducing chromatic aberration or degrading the contrast of the original view, all housed in a body weighing just 10.83 oz.\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\u003eApochromatic 4-Element Optics: 2.5x Magnification with High Contrast\u003c\/h3\u003e\n\u003cp\u003eUnlike simpler 2- or 3-element Barlows, the Luminos employs a 4-element, 4-group optical design. This apochromatic configuration provides superior correction for chromatic aberration, ensuring views are free from false color and haloing around bright objects like Jupiter, Venus, or the lunar limb. The fully multi-coated optics maximize light transmission, preserving image brightness and contrast even at the high magnifications this 2.5x Barlow enables.\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\u003eLuminos Body Design: A Secure, Non-Marring Grip on Your Eyepieces\u003c\/h3\u003e\n\u003cp\u003eThe Luminos 2.5x Barlow features a hard-anodized aluminum housing that is both durable and matches the aesthetic of the Luminos eyepiece line. A wide, centralized rubber grip ensures secure handling, even with gloves on in cold weather. Critically, the Barlow uses a brass compression ring to hold your eyepieces; turning the oversized thumbscrew tightens this ring gently and uniformly around the eyepiece barrel, preventing the scratches and gouges that standard set screws can cause.\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\u003eVersatility for 2\" and 1.25\" Systems: Integrated Filter Threads\u003c\/h3\u003e\n\u003cp\u003eThis Barlow is engineered for maximum compatibility across your entire eyepiece collection. It natively accepts 2\" eyepieces and includes a high-quality 2\" to 1.25\" adapter, allowing you to achieve 2.5x magnification with every eyepiece you own. The main 2\" barrel is also threaded to accept standard 2\" filters, a key feature that lets you attach a nebula or planetary filter to the Barlow itself, keeping it in the optical path as you switch between different eyepieces.\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 advantage of the Luminos 2.5x Barlow's 4-element design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 4-element apochromatic design provides superior color correction compared to simpler Barlows. This means you will see significantly less chromatic aberration (false color fringing) on high-contrast targets like the Moon, planets, and bright stars, resulting in a sharper and more natural view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the brass compression ring on the Luminos Barlow work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstead of a thumbscrew pressing directly onto your eyepiece, the screw on the Luminos Barlow tightens a C-shaped brass ring inside the barrel. This ring then distributes the pressure evenly around your eyepiece's barrel, providing a more secure grip and preventing the scratches and scoring that a single-point screw can cause.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Luminos 2.5x Barlow with my 8\" f\/10 Schmidt-Cassegrain for planetary viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it's an excellent choice. An 8\" SCT has a focal length of around 2032mm. With a 10mm eyepiece, you'd get 203x magnification. Adding the Luminos 2.5x Barlow boosts that to over 500x, which is beyond the useful limit for that aperture. A better pairing would be a 25mm eyepiece (81x), which the Barlow would turn into a powerful 203x, ideal for resolving cloud belts on Jupiter or the Cassini Division in Saturn's rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Luminos 2.5x Barlow cause vignetting with my 2\" wide-field eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Luminos Barlow has a clear aperture of 28mm. This is generally sufficient to avoid vignetting (darkening at the edges of the field) with most 2\" eyepieces, especially those with focal lengths of 20mm or more. You may see some minor vignetting with very long focal length, ultra-wide-field 2\" eyepieces that have the largest possible field stops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the filter threads on the Luminos 2.5x Barlow improve my workflow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBy threading a 2\" filter (like a UHC or OIII filter for nebulae) directly onto the Barlow's barrel, the filter stays in place as you swap eyepieces. This saves you the hassle of unscrewing and re-screwing the filter from each eyepiece individually, making your observing session more efficient.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Luminos 2.5x Barlow for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, a Barlow lens is a key tool for high-magnification planetary, lunar, and solar imaging. The Luminos 2.5x Barlow will increase your telescope's effective focal length, making the target appear larger on your camera sensor. Its apochromatic design is particularly beneficial for imaging, as it ensures sharp, color-accurate results.\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\u003e2.5x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e51mm (2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepted Eyepieces\u003c\/td\u003e\n\u003ctd\u003e1.25\" \u0026amp; 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e4-Element \/ 4-Group Apochromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e28mm (1.1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, accepts 2\" filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e93mm x 64mm x 64mm (3.66\" x 2.52\" x 2.52\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10.83 oz (307 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof\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\"\u003eLuminos 2.5x Barlow Lens - 2\"\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\" to 1.25\" Eyepiece 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\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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.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 Software\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003eCelestron PWI Telescope Control 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":44967145668893,"sku":"CEL-93436","price":222.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Luminos-2-inch-2-5x-Barlow-Lens-93436-1__20128.1594230244.1280.1280.jpg?v=1684337148"},{"product_id":"celestron-omni-2x-barlow-1-25","title":"Celestron Omni 2x Barlow - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eInstantly doubles the magnification of any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003e2-element, fully multi-coated optics for sharp, high-contrast views\u003c\/li\u003e\n\u003cli\u003eMaintains the original eyepiece's eye relief for comfortable viewing\u003c\/li\u003e\n\u003cli\u003eLightweight design at only 2.11 oz (60 g)\u003c\/li\u003e\n\u003cli\u003eThreaded to accept standard 1.25\" astronomy 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\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 Omni 2x Barlow Lens - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Omni 2x Barlow Lens instantly doubles the power of any 1.25\" eyepiece using a 2-element optical design. This compact accessory weighs just 2.11 oz (60 g) and features fully multi-coated lenses to maximize image brightness and contrast. With its standard 31.75mm barrel, the Omni 2x Barlow provides a simple and effective way to expand your magnification options without buying a full new set of eyepieces.\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\u003eDoubling Your Eyepiece Collection with 2x Power\u003c\/h3\u003e\n\u003cp\u003eA Barlow lens is the most efficient way to increase the flexibility of your telescope. By placing the Omni 2x Barlow between your diagonal and eyepiece, you effectively double your available magnifications. A 25mm eyepiece delivers the view of a 12.5mm, and a 10mm eyepiece performs like a 5mm, giving you the higher power needed to resolve fine detail on planets or split tight double stars.\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\u003eFully Multi-Coated 2-Element Optics for High Contrast\u003c\/h3\u003e\n\u003cp\u003eThe Omni 2x Barlow uses a 2-element optical design with fully multi-coated lenses to ensure light transmission is high and reflections are low. The lens edges are also blackened to further reduce internal glare, resulting in a cleaner, higher-contrast image. This design preserves the sharpness of your eyepieces while delivering a significant boost in power.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Transmission Coatings:\u003c\/strong\u003e Fully multi-coated optics ensure that the view remains bright and clear, even when doubling the magnification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Baffling:\u003c\/strong\u003e Blackened lens edges prevent stray light from scattering within the Barlow, which helps to maintain a dark background sky and crisp details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Compatibility:\u003c\/strong\u003e The barrel is threaded to accept standard 1.25\" filters, allowing you to use your favorite planetary or nebula filters at high power.\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\u003eMaintaining Eye Relief at 2x Magnification\u003c\/h3\u003e\n\u003cp\u003eOne of the key advantages of using a Barlow is that it doubles magnification without changing the eye relief of the eyepiece you use it with. High-power eyepieces often have very short eye relief, forcing you to press your eye close to the lens. With the Omni 2x Barlow, you can achieve high-power views while enjoying the comfortable, longer eye relief of your lower-power eyepieces—a significant benefit for all observers, especially those who wear glasses.\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 will the Omni 2x Barlow affect views of Jupiter with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing the Omni 2x Barlow with an 8\" f\/10 Schmidt-Cassegrain is an excellent way to boost magnification for planetary viewing. For example, a 25mm eyepiece that normally provides 81x magnification will jump to 162x with the Barlow. This is an ideal power for resolving Jupiter's main cloud bands, the Great Red Spot, and the Galilean moons as distinct disks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Omni 2x Barlow introduce any chromatic aberration?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2-element, fully multi-coated design of the Omni 2x Barlow does a very good job of controlling false color (chromatic aberration). While any additional glass in the optical path has the potential to introduce minor aberrations, this Barlow is designed to provide sharp, color-correct views, especially when paired with quality eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Celestron Omni 2x Barlow for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Omni 2x Barlow is a great tool for lunar and planetary imaging. It doubles the effective focal length of your telescope, increasing the image scale on your camera's sensor. This allows you to capture much more detailed close-ups of the Moon's craters or the cloud bands of Saturn and Jupiter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs it better to use the Omni 2x Barlow with a 20mm eyepiece or just buy a 10mm eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBoth will give you the same magnification, but the Barlow solution offers a key advantage: eye relief. A 20mm eyepiece typically has much more comfortable eye relief than a 10mm eyepiece. Using the Omni 2x Barlow with the 20mm eyepiece gives you 10mm power while retaining the comfort of the 20mm's longer eye relief.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach filters to the Omni 2x Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 1.25\" barrel of the Omni 2x Barlow is threaded to accept standard 1.25\" filters. You can screw a filter directly onto the bottom of the Barlow barrel before inserting it into your telescope's focuser or diagonal. This allows you to apply the filter's effect to any eyepiece you then place in the Barlow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the build quality of the Celestron Omni 2x Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Omni 2x Barlow features a sleek, silver aluminum body with a metal thumbscrew to securely hold your eyepiece. At a weight of just 60 g (2.11 oz), it's light enough to avoid causing significant balance issues with your telescope.\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\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e2x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Elements\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepted Eyepieces\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e74mm x 39.5mm x 39.5mm (2.91\" x 1.55\" x 1.55\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.11 oz (60 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eNot Waterproof\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=\"Celestron Omni 2x Barlow Lens\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/93326-omni-barlow-lens-2x-125in_1.jpg?v=1682022718\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eOmni 2x Barlow Lens - 1.25\"\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=\"Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-1.25inch-Dustcap.jpg?v=1778488331\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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.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 Software\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003eCelestron PWI Telescope Control 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":44967145701661,"sku":"CEL-93326","price":58.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Omni-1-25-inch-2x-Barlow-Lens-93326-1__59078.1594230245.1280.1280.jpg?v=1684337150"},{"product_id":"celestron-x-cel-lx-2x-barlow-1-25","title":"Celestron X-Cel LX 2x Barlow - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDoubles the magnification of any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003e3-element apochromatic optics for color-accurate, high-contrast views\u003c\/li\u003e\n\u003cli\u003eFully multi-coated lenses maximize light transmission\u003c\/li\u003e\n\u003cli\u003eBrass compression ring provides a secure, scratch-free grip on eyepieces\u003c\/li\u003e\n\u003cli\u003eThreaded to accept standard 1.25\" astronomy 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\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 X-Cel LX 2x Barlow Lens - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron X-Cel LX 2x Barlow Lens doubles the power of any 1.25\" eyepiece using a 3-element optical design that delivers sharp, high-contrast images. Weighing just 5.3 oz (150 g), this compact Barlow maintains excellent color fidelity, effectively expanding your eyepiece collection without introducing false color.\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 3-Element Apochromatic Design for 2x Magnification\u003c\/h3\u003e\n\u003cp\u003eUnlike standard achromatic Barlows, the X-Cel LX uses a 3-element apochromatic lens system. This design brings all wavelengths of light to a single focal point, eliminating the chromatic aberration, or \"false color,\" that can soften planetary details. The fully multi-coated optics ensure maximum light passes through to your eye, preserving the brightness of faint targets.\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 Grip and Scratch-Free Clamping\u003c\/h3\u003e\n\u003cp\u003eEngineered for secure and reliable use, the X-Cel LX Barlow features a central rubber grip that provides a firm hold, even with cold hands or while wearing gloves. Inside, a brass compression ring secures your eyepiece without marring its barrel. This mechanism offers a more uniform and solid grip than a simple thumbscrew tip, protecting your investment in high-quality eyepieces.\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 1.25\" Filter Threads for Session Efficiency\u003c\/h3\u003e\n\u003cp\u003eThe barrel of the X-Cel LX 2x Barlow is threaded to accept standard 1.25\" filters. This allows you to attach a planetary color filter or a nebula filter directly to the Barlow, applying its effect to every eyepiece you use. This saves you the time and hassle of swapping the filter between different eyepieces during an observing session, letting you focus more on the view.\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 advantage of the X-Cel LX 2x Barlow's 3-element design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e3-element apochromatic\u003c\/strong\u003e design provides superior color correction compared to simpler 2-element achromatic Barlows. This results in sharper, higher-contrast images with virtually no distracting color fringing, which is especially critical for high-magnification views of the Moon, planets, and double stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Celestron X-Cel LX 2x Barlow perform with a 10mm eyepiece on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing the X-Cel LX 2x Barlow with a 10mm eyepiece effectively gives you the view of a 5mm eyepiece, doubling your magnification. On a planet like Jupiter, this will make details like the Great Red Spot and individual cloud bands much larger and easier to resolve, while the apochromatic optics will ensure the planet's subtle colors remain true.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the X-Cel LX 2x Barlow for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this Barlow is an excellent choice for planetary imaging. By doubling the effective focal length of your telescope, it increases the image scale on your camera sensor, making planets appear larger. The sharp, color-corrected optics will help you capture fine details with a planetary camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Barlow work with my 8\" f\/10 Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The X-Cel LX 2x Barlow is a perfect match for an 8\" SCT. It will double the magnification of your eyepieces, providing the high power needed to split tight double stars like Albireo (Beta Cygni) or examine crater details along the Moon's terminator, all while maintaining a sharp, clean image.\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 the X-Cel LX Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe brass compression ring provides a more secure grip on your eyepiece than a standard thumbscrew. It applies even pressure around the eyepiece barrel, holding it firmly in place and preventing it from wobbling. It also protects your eyepiece barrels from being scratched or dented by the tip of a set screw.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I attach a filter to the X-Cel LX 2x Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 1.25\" barrel is threaded to accept standard 1.25\" filters. This means you can attach a filter to the Barlow itself, and it will work with any eyepiece you insert. This is more convenient than moving a filter from one eyepiece to another when you want to change magnification.\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\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e2x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003e3-Element Apochromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Groups\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepted Eyepieces\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5.3 oz (150 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e76mm x 56mm x 56mm (2.99\" x 2.20\" x 2.20\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eNot Waterproof\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=\"Celestron X-Cel LX 2x Barlow Lens - 1.25\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/C93529_x-cel_lx_2x_barlow_1.jpg?v=1700684078\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eX-Cel LX 2x Barlow Lens - 1.25\"\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=\"Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-1.25-inch-Dustcap-set.jpg?v=1782250106\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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.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 Software\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003eCelestron Software \u0026amp; Drivers\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 Limited Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967145734429,"sku":"CEL-93529","price":174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-X-Cel-LX-1-25-inch-2x-Barlow-Lens-93529-1__13627.1594230245.1280.1280.jpg?v=1684337155"},{"product_id":"celestron-stereo-binocular-viewer","title":"Celestron Stereo Binocular Viewer","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEngage both eyes for more comfortable, detailed, and higher-contrast celestial views\u003c\/li\u003e\n\u003cli\u003eHigh-quality BAK-4 prisms with a 22mm clear aperture prevent vignetting\u003c\/li\u003e\n\u003cli\u003eFully multi-coated optics maximize light transmission for brighter images\u003c\/li\u003e\n\u003cli\u003eAdjusts from 54mm to 75mm to fit a wide range of interpupillary distances\u003c\/li\u003e\n\u003cli\u003eIndividual helical focusers for precise diopter control\u003c\/li\u003e\n\u003cli\u003e1.25\" barrel is threaded for standard astronomy 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\u003eCelestron Stereo Binocular Viewer\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Stereo Binocular Viewer transforms solo-eye observing by engaging both eyes, weighing just 18 oz while accommodating interpupillary distances from 54mm to 75mm. Its optical system features 22mm clear aperture BAK-4 prisms with fully multi-coated surfaces to deliver improved image contrast and detail without vignetting. This viewer is designed for comfort during long sessions, reducing the eye fatigue common with single-eyepiece 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\u003eTwo Eyes on the Universe: The Binoviewing Advantage\u003c\/h3\u003e\n\u003cp\u003eYour brain is wired to process visual information from two eyes simultaneously, creating a richer, more detailed perception of the world. Using a single eyepiece forces your brain to ignore the input from your unused eye, resulting in a flatter image and significant eye strain. The Celestron Stereo Binocular Viewer uses two matched eyepieces (sold separately) to present a single, unified image, allowing your eyes to relax and observe for extended periods in comfort. This natural viewing method often reveals subtle details on planets and enhances contrast on deep-sky objects that are missed with one eye alone.\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: 22mm Aperture with Fully Multi-Coated BAK-4 Prisms\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the viewer are high-quality BAK-4 prisms with a generous 22mm clear aperture, ensuring the full light cone from your telescope reaches both eyepieces without being cut off. This design prevents vignetting, even with wider-field 1.25\" eyepieces. Every optical surface is fully multi-coated, a critical feature that maximizes light transmission and minimizes internal reflections, resulting in brighter, higher-contrast images than viewers with inferior coatings.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBAK-4 Prisms:\u003c\/strong\u003e Delivers superior image quality and a round exit pupil, preserving the light collected by your telescope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22mm Clear Aperture:\u003c\/strong\u003e Provides an unvignetted field of view, critical for low-power sweeping and framing large celestial objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Multi-Coated Optics:\u003c\/strong\u003e Increases light throughput for brighter views of faint nebulae and galaxies, and boosts contrast for fine planetary 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\u003eErgonomics and Compatibility: 54mm-75mm IPD and Back Focus Explained\u003c\/h3\u003e\n\u003cp\u003eThe Celestron Binoviewer is built for both user comfort and broad telescope compatibility. The interpupillary distance (IPD) adjusts smoothly from 54mm to 75mm, accommodating a wide range of users from children to adults. Each eyepiece holder features its own helical focuser for precise diopter adjustment, allowing you to achieve perfect focus for both eyes independently. The 1.25\" nosepiece is threaded for filters, letting you apply filtration to both eyepieces with a single filter.\u003c\/p\u003e\n\u003cp\u003eThis viewer requires approximately 3.5 inches of back focus, making it a perfect match for most Schmidt-Cassegrain (SCT) and Maksutov-Cassegrain telescopes, which have ample focus travel. While many refractors are also compatible, Newtonian reflectors often lack the necessary back focus to reach infinity with a binoviewer. The entire unit weighs only 18 oz, minimizing its impact on telescope balance.\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 eyepieces should I use with the Celestron Stereo Binocular Viewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must use two identical, matched 1.25\" eyepieces, which are sold separately. For the best experience, choose eyepieces with a simple optical design, such as Plössls. Avoid very wide-field, complex eyepieces, as they may not reach focus and their wide apparent fields can be difficult to merge into a single image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Celestron Stereo Binocular Viewer work with my Newtonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMost standard Newtonian reflectors do not have enough back focus to accommodate a binoviewer and reach focus at infinity. The light path of a binoviewer is longer than a standard eyepiece, and most Newtonian focusers cannot be racked in far enough to compensate. It is primarily designed for catadioptric telescopes (SCTs, Maks) and many refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 18 oz weight of the Celestron Binoviewer affect balancing my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 18 oz binoviewer plus the weight of two eyepieces (typically 8-16 oz total) will require you to rebalance your telescope. For an 8\" SCT, this is easily managed by sliding the optical tube forward in its cradle or adding a small counterweight to the front of the scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with this binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The 1.25\" nosepiece that inserts into your telescope's focuser is threaded to accept standard 1.25\" astronomy filters. This is a major convenience, as you only need one filter (e.g., a Moon filter or nebula filter) to serve both eyepieces, saving you the cost and hassle of buying a matched pair.\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 22mm BAK-4 prisms in the Celestron Binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 22mm clear aperture of the BAK-4 prisms ensures that the light from the telescope is not obstructed before it reaches your eyepieces. This prevents vignetting (dimming at the edge of the field), especially with lower power eyepieces. BAK-4 glass is a high-index glass used in quality binoculars and viewers for its ability to transmit bright, sharp images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does observing the Moon with the Celestron Stereo Binocular Viewer compare to a single eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eObserving the Moon with a binoviewer is a transformative experience. Using both eyes reduces glare and eye strain, allowing you to comfortably study lunar features for much longer. Many observers report a pseudo-3D effect and perceive significantly more fine detail in crater walls, rilles, and mountain ranges compared to viewing with just one eye.\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\u003e22mm (0.86\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003eBAK-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Interpupillary Distance (IPD)\u003c\/td\u003e\n\u003ctd\u003e75mm (2.95\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Interpupillary Distance (IPD)\u003c\/td\u003e\n\u003ctd\u003e54mm (2.13\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewer Weight\u003c\/td\u003e\n\u003ctd\u003e18 oz (510 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewer Dimensions\u003c\/td\u003e\n\u003ctd\u003e120.65mm x 120.65mm x 44.45mm (4.75\" x 4.75\" x 1.75\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Case Weight\u003c\/td\u003e\n\u003ctd\u003e11.6 oz (329 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Case Dimensions\u003c\/td\u003e\n\u003ctd\u003e152.4mm x 152.4mm x 69.85mm (6\" x 6\" x 2.75\")\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\"\u003eCelestron Stereo Binocular Viewer\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\"\u003eFoam-Lined Storage 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\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":44967145799965,"sku":"CEL-93691","price":361.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Stereo-Binocular-Viewer-93691-1__57707.1594230246.1280.1280.jpg?v=1684337162"},{"product_id":"celestron-star-diagonal-1-25","title":"Celestron Star Diagonal - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a comfortable 90° viewing angle\u003c\/li\u003e\n\u003cli\u003eInserts into any 1.25\" telescope focuser or visual back\u003c\/li\u003e\n\u003cli\u003eAccepts standard 1.25\" eyepieces\u003c\/li\u003e\n\u003cli\u003eCorrects image orientation to be right-side-up\u003c\/li\u003e\n\u003cli\u003eIdeal for refractors and catadioptric telescopes\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 Star Diagonal - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron 1.25\" Star Diagonal redirects your telescope's light path by 90°, allowing for a dramatically more comfortable viewing position. This essential accessory fits any refractor or catadioptric telescope that uses a standard 1.25\" focuser and eyepieces, making it a fundamental upgrade for visual astronomy.\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 90° Solution for Comfortable Observing\u003c\/h3\u003e\n\u003cp\u003eViewing objects near the zenith (directly overhead) without a diagonal requires crouching in an awkward, uncomfortable position that causes significant neck strain. By turning the eyepiece out to a 90° angle, this diagonal lets you observe for hours in a relaxed posture, whether you are seated or standing. This simple ergonomic improvement is critical for enjoying long sessions at the eyepiece without fatigue.\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\u003eStandard 1.25\" Fit and Correct-Image Orientation\u003c\/h3\u003e\n\u003cp\u003eDesigned for maximum compatibility, the Celestron 1.25\" diagonal slides directly into the focuser of most refractors, Schmidt-Cassegrain (SCT), and Maksutov-Cassegrain (Mak) telescopes. It also presents an image that is right-side-up, which is more intuitive for navigating the sky than the inverted view seen without a diagonal.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e The 1.25\" barrel format is the most common standard in astronomy, ensuring this diagonal will work with a vast range of telescopes and eyepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Orientation:\u003c\/strong\u003e The view is corrected vertically, so objects appear upright. The image is, however, reversed from left to right, which is standard for all mirror diagonals and is not a hindrance for astronomical observation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerrestrial Viewing Trade-off:\u003c\/strong\u003e Because of the left-right reversal, this diagonal is not recommended for terrestrial viewing where correct image orientation is required. For daytime use, an erecting prism is necessary.\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 do I need a star diagonal for my refractor or SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA star diagonal, like this Celestron 1.25\" model, is essential for comfortable viewing. Without it, you would have to look straight through the telescope, which becomes extremely difficult and causes neck strain when observing objects high in the sky. The 90° angle allows you to look down into the eyepiece from a comfortable position.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Celestron 1.25\" Star Diagonal work with my Newtonian reflector telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Newtonian reflectors have their focuser on the side of the tube, which is already at a comfortable 90° angle. Adding a star diagonal would not only be redundant but would also push the eyepiece out too far, preventing the telescope from reaching focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"right side up, but reversed left-to-right\" mean when viewing the Moon with this diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen you observe the Moon through the Celestron 1.25\" Star Diagonal, craters and seas will appear upright, just as you see them with your naked eye. However, the left and right sides will be swapped. For example, the Sea of Tranquility (Mare Tranquillitatis), which is on the eastern limb (left side from the northern hemisphere), will appear to be on the right side of the lunar disc.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Celestron 1.25\" diagonal for bird watching?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt is not recommended. While the image will be upright, the left-to-right reversal makes it very difficult to follow moving objects like birds or boats. For terrestrial viewing, you should use a 45° or 90° \"correct-image\" or \"erecting\" prism diagonal, which corrects the view on both axes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Celestron 1.25\" Star Diagonal affect the focus of my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, all diagonals add to the optical path length. Refractor and catadioptric (SCT, Mak) telescopes are designed with enough focus travel to accommodate a diagonal. You will simply need to adjust the focuser to achieve a sharp image. This diagonal will not cause any issues with reaching focus on a compatible telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat telescopes are compatible with the Celestron 1.25\" Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis diagonal is compatible with any telescope that uses a 1.25\" focuser and does not have a built-in diagonal. This includes most:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRefractor telescopes\u003c\/li\u003e\n\u003cli\u003eSchmidt-Cassegrain telescopes (SCTs)\u003c\/li\u003e\n\u003cli\u003eMaksutov-Cassegrain telescopes (Maks)\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\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eRight side up, reversed left-to-right\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope Designs\u003c\/td\u003e\n\u003ctd\u003eRefractors, Schmidt-Cassegrain, Maksutov-Cassegrain\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=\"Celestron 1.25 inch Star Diagonal\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/94115-A-1.jpg?v=1686000000\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCelestron 1.25\" Star Diagonal\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=\"Dust caps for 1.25 inch diagonal\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-1point25inch-Dustcap.jpg?v=1776900000\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\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":44967146094877,"sku":"CEL-94115-A","price":62.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-1-25-inch-Star-Diagonal-94115-A-1__33051.1594230250.1280.1280.jpg?v=1684337179"},{"product_id":"celestron-mirror-diagonal-with-xlt-coatings-2","title":"Celestron Mirror Diagonal with XLT Coatings - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eInterferometer-tested mirror with 1\/10 wave or better surface accuracy\u003c\/li\u003e\n\u003cli\u003eFeatures Celestron's proprietary XLT optical coatings for maximum light transmission\u003c\/li\u003e\n\u003cli\u003eThreads directly onto the rear cell of Schmidt-Cassegrain telescopes for a secure connection\u003c\/li\u003e\n\u003cli\u003eIncludes a 2\" to 1.25\" adapter for use with any eyepiece format\u003c\/li\u003e\n\u003cli\u003eComes with a protective aluminum storage case\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 Mirror Diagonal with XLT Coatings - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron 2\" Mirror Diagonal with XLT Coatings delivers the optical precision required for critical observation, built around a mirror guaranteed to be 1\/10 wave or better. This diagonal securely threads onto the rear cell of a Schmidt-Cassegrain, providing a stable platform for your heaviest 2\" eyepieces while also accommodating 1.25\" eyepieces via the included 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\u003eA 1\/10 Wave Mirror with High-Transmission XLT Coatings\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is an interferometer-tested mirror with a surface accuracy of 1\/10 wave or better. This level of precision prevents the introduction of optical errors, preserving the sharpness and contrast your telescope is designed to deliver. The mirror surface is treated with Celestron's premier XLT coatings, the same multi-layer coatings used on their high-end telescopes, which dramatically increase light transmission over standard aluminum for visibly brighter images.\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 2-Inch Format Advantage for Deep-Sky Observing\u003c\/h3\u003e\n\u003cp\u003eUpgrading to a 2\" diagonal is essential for unlocking wide-field views and observing faint deep-sky objects. The larger barrel allows your telescope's full light cone to illuminate the field stop of a 2\" low-power eyepiece. This results in a significantly wider true field of view and brighter images for large targets like the Andromeda Galaxy (M31) or the Orion Nebula (M42), which cannot be framed in their entirety with a 1.25\" eyepiece at the same focal length.\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 SCT Connection and 1.25\" Eyepiece Versatility\u003c\/h3\u003e\n\u003cp\u003eUnlike standard slip-in diagonals that can sag or tilt under the weight of heavy accessories, the Celestron 2\" XLT Diagonal threads directly onto the rear cell of an SCT. This rigid, secure connection ensures perfect optical alignment all night long, even when using large eyepieces or camera adapters. The precision-machined housing holds the mirror in exact collimation, while the included 2\" to 1.25\" adapter lets you switch between eyepiece formats in seconds without compromising stability.\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\u003eCelestron XLT vs. Standard Stock Diagonals: A Worthwhile Upgrade\u003c\/h3\u003e\n\u003cp\u003eMany telescopes come with a basic \"stock\" diagonal, which is typically the weakest link in the optical chain. The Celestron 2\" XLT Diagonal represents a significant upgrade in two key areas.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Accuracy:\u003c\/strong\u003e Most standard diagonals use a 1\/4 wave mirror, which can soften fine planetary detail. The 1\/10 wave mirror in the XLT diagonal maintains the sharpness of the primary optics, resulting in higher-resolution views.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight Throughput:\u003c\/strong\u003e The XLT coatings transmit measurably more light than the simple aluminum coatings on stock diagonals. This difference is immediately apparent on faint objects like galaxies and nebulae, where every photon counts.\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\"\u003eWill the Celestron 2\" XLT Diagonal improve views in my 8\" SCT over the stock diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. An 8\" SCT has excellent optics, and a lower-quality diagonal can limit its potential. The \u003cstrong\u003e1\/10 wave mirror\u003c\/strong\u003e will preserve the fine detail the telescope can resolve, and the \u003cstrong\u003eXLT coatings\u003c\/strong\u003e will provide a noticeably brighter image on deep-sky objects compared to the standard 1.25\" diagonal included with the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 1\/10 wave mirror help when observing Jupiter or Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePlanetary observation relies on seeing maximum sharpness and contrast. A mirror with 1\/10 wave accuracy introduces virtually no distortion to the light path. This means fine details like Jupiter's cloud bands, the Great Red Spot, or the Cassini Division in Saturn's rings will appear sharper and more defined than with a standard 1\/4 wave diagonal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of this mirror diagonal over a prism diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor telescopes with a focal ratio of f\/7 or slower, like an SCT, a high-quality mirror diagonal is generally superior. Mirror diagonals are more color-neutral and do not introduce the chromatic aberration that some prism diagonals can, especially at high magnifications. The XLT mirror coatings also provide excellent light transmission across the entire visual spectrum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this Celestron diagonal thread directly onto all SCTs?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis diagonal is designed to thread onto the standard rear cell of most Schmidt-Cassegrain telescopes, including virtually all models made by Celestron and Meade. It provides a much more secure connection than a slip-in diagonal that relies on a visual back and thumbscrews.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" filters with the Celestron XLT Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The barrel of the diagonal is threaded to accept standard 2\" astronomy filters. You can thread a filter directly onto the diagonal and then insert any 2\" eyepiece, or you can thread filters onto the individual eyepieces themselves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the included aluminum case for the XLT diagonal important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA diagonal's mirror is a sensitive optical surface. The foam-lined aluminum case protects it from dust, moisture, and impacts during transport and storage. Keeping the mirror clean and the housing perfectly aligned is critical to maintaining its 1\/10 wave performance, and the case ensures it stays in pristine condition.\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\u003eType\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal\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\u003eMirror Accuracy\u003c\/td\u003e\n\u003ctd\u003e1\/10 wave or better\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eXLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter\u003c\/td\u003e\n\u003ctd\u003e2\" to 1.25\" included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eThreads on to SCT rear cell\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=\"Celestron 2-inch Mirror Diagonal with XLT Coatings\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/celestron-2-xlt-sct-diagonal-1.jpg?v=1716499870\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" Mirror Diagonal with XLT Coatings\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=\"2-inch to 1.25-inch Eyepiece Adapter\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/celestron-2-xlt-sct-diagonal-4.jpg?v=1716499870\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e2\" to 1.25\" 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\u003cimg class=\"DAV-img-box\" alt=\"Aluminum Storage Case\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/celestron-2-xlt-sct-diagonal-2.jpg?v=1716499870\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAluminum 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\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":44967146127645,"sku":"CEL-93527","price":257.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-2-inch-Mirror-Diagonal-with-XLT-Coatings-93527-1__58186.1594230250.1280.1280.jpg?v=1684337182"},{"product_id":"celestron-45-degree-erect-image-diagonal","title":"Celestron 45-Degree Erect Image Diagonal","description":"\u003cul class=\"DAV-feature-list\"\u003e\n  \u003cli\u003eCorrects image orientation for terrestrial viewing\u003c\/li\u003e\n  \u003cli\u003eProduces right-side-up and left-to-right correct images\u003c\/li\u003e\n  \u003cli\u003eComfortable 45-degree viewing angle for daytime use\u003c\/li\u003e\n  \u003cli\u003eCompatible with refractor and catadioptric telescopes (SCTs, Maks)\u003c\/li\u003e\n  \u003cli\u003eStandard 1.25\" barrel size\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 45-Degree Erect Image Diagonal\u003c\/h2\u003e\n          \u003cp\u003eThe Celestron 45-Degree Erect Image Diagonal is the essential accessory for turning your astronomical telescope into a high-power daytime spotting scope. This diagonal uses an Amici prism to provide a correctly oriented, right-side-up and left-to-right image, making it indispensable for terrestrial observation, all backed by a 2-Year Warranty.\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\u003eCorrecting Your View for Terrestrial Observation\u003c\/h3\u003e\n          \u003cp\u003eA standard star diagonal renders images upside-down or mirrored, which is disorienting for terrestrial viewing. The Celestron 45-Degree Erect Image Diagonal solves this by reorienting the light path. Simply swap it with your telescope's standard diagonal to see the world as it is—right-side up and dimensionally correct—making it easy to track birds, boats, or distant landscapes.\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 45-Degree Advantage for Refractors and SCTs\u003c\/h3\u003e\n          \u003cp\u003eThe 45-degree viewing angle is specifically designed for comfort during terrestrial observing, when your telescope is often aimed horizontally. This diagonal is fully compatible with any refractor or Schmidt-Cassegrain (SCT) telescope that uses a standard 1.25\" focuser or visual back.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eAmici Prism Design:\u003c\/strong\u003e Ensures a fully corrected image, unlike standard mirror diagonals that only correct one axis.\n            \u003c\/li\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eDaytime Comfort:\u003c\/strong\u003e The 45-degree angle reduces neck strain when observing subjects on or near the horizon.\n            \u003c\/li\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eImportant Limitation:\u003c\/strong\u003e This diagonal is not intended for Newtonian reflector telescopes. The optical design of a Newtonian will prevent this accessory from producing a fully corrected image.\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\u003e45-Degree Erect Image Diagonal vs. Standard 90-Degree Star Diagonal\u003c\/h3\u003e\n          \u003cp\u003eWhile a 90-degree star diagonal is ideal for astronomy where the telescope points high into the sky, it's less practical for terrestrial use. The key difference lies in the image orientation and viewing angle.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eImage Orientation:\u003c\/strong\u003e A standard 90-degree diagonal typically produces an image that is right-side up but reversed left-to-right. The 45-degree erect image diagonal corrects both axes.\n            \u003c\/li\u003e\n            \u003cli\u003e\n              \u003cstrong\u003eViewing Angle:\u003c\/strong\u003e The 45-degree angle of this diagonal is far more natural and comfortable for horizontal viewing than the steep 90-degree angle of a star diagonal.\n            \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 do I need a 45-Degree Erect Image Diagonal for birdwatching with my SCT?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eWithout an erect image diagonal, the view through your Schmidt-Cassegrain telescope will be either upside-down or mirror-reversed. This makes tracking a moving bird nearly impossible. The Celestron 45-Degree Erect Image Diagonal corrects the view to be right-side up and left-to-right correct, just like looking through binoculars.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Celestron 45-Degree Diagonal for astronomy?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eWhile you can, it's not ideal. The Amici prism design has a slight ridge in the center that can cause a faint spike on very bright objects like planets or bright stars. For the highest-contrast astronomical views, a dedicated 90-degree mirror or prism star diagonal is recommended.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 45-Degree Erect Image Diagonal work on my Newtonian reflector telescope?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eNo. Due to the optical design of Newtonian reflectors, this diagonal will not produce a fully corrected image. The image orientation will still be rotationally off, and you may not be able to reach focus. This accessory is designed exclusively for refractors and catadioptric telescopes like SCTs and Maksutov-Cassegrains.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Celestron 45-Degree Diagonal hard to install on my telescope?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eInstallation is simple. You just remove your existing 1.25\" diagonal from the telescope's focuser or visual back by loosening the thumbscrews, and then insert the 45-Degree Erect Image Diagonal in its place and tighten the screws. It takes only a few seconds.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the main benefit of the 45-degree angle over a 90-degree angle?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eFor terrestrial viewing, your telescope is typically horizontal. The 45-degree angle allows you to look down into the eyepiece comfortably. A 90-degree angle would force you to bend over at an awkward angle to see through the eyepiece when the telescope is aimed at the horizon.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eI have a Celestron refractor. Will this diagonal allow me to read a sign across the street?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eYes, absolutely. A standard diagonal would show the text reversed as if in a mirror. The Celestron 45-Degree Erect Image Diagonal will present the text correctly, making it readable. This is a perfect example of what this accessory is designed for.\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\u003eViewing Angle\u003c\/td\u003e\n          \u003ctd\u003e45 Degrees\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003ePrism Type\u003c\/td\u003e\n          \u003ctd\u003eAmici Roof Prism\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eImage Orientation\u003c\/td\u003e\n          \u003ctd\u003eErect and Correct Left-to-Right\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eBarrel Size\u003c\/td\u003e\n          \u003ctd\u003e1.25\"\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCompatibility\u003c\/td\u003e\n          \u003ctd\u003eRefractors and Schmidt-Cassegrain \/ Maksutov-Cassegrain Telescopes\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eWarranty\u003c\/td\u003e\n          \u003ctd\u003e2-Year Warranty\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\"\u003eCelestron 45-Degree Erect Image Diagonal - 1.25\"\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\"\u003eDust Caps\u003c\/p\u003e\n          \u003cp class=\"DAV-item-subtitle\"\u003e× 2\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    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ca href=\"https:\/\/davidastro.com\/pages\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967146193181,"sku":"CEL-94112-A","price":62.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-45-Degree-Erect-Image-Diagonal-94112-A-1__59001.1594230251.1280.1280.jpg?v=1684337189"},{"product_id":"celestron-dielectric-star-diagonal-with-twist-lock-1-25","title":"Celestron Dielectric Star Diagonal with Twist-Lock - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eOver 99% reflectivity from 58-layer dielectric mirror coatings\u003c\/li\u003e\n\u003cli\u003e1.25” Twist-Lock holder provides a secure, self-centering grip\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited optics maintain your telescope's image quality\u003c\/li\u003e\n\u003cli\u003eMachined aluminum housing with glare-threaded interior\u003c\/li\u003e\n\u003cli\u003eAccepts standard 1.25\" eyepiece 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\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 Dielectric Star Diagonal, 1.25” with Twist-Lock\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Dielectric Star Diagonal, 1.25” with Twist-Lock, upgrades your telescope's optical train with a diffraction-limited BK7 mirror featuring 58 layers of dielectric coatings. These coatings achieve over 99% reflectivity, ensuring maximum light transmission for brighter, higher-contrast images. The diagonal weighs just 7.5 oz (212.6 g) and is housed in a durable, machined aluminum body measuring 4.5\" x 2\" x 3.5\".\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\u003e99% Reflectivity from 58-Layer Dielectric Coatings\u003c\/h3\u003e\n\u003cp\u003eThe core of this diagonal is its BK7 mirror, which is coated with 58 layers of dielectric material to achieve over 99% reflectivity across the visual spectrum. Unlike standard aluminum or silver coatings that can degrade over time, these dielectric layers are highly durable and deliver consistently bright and sharp images. This ensures that the maximum amount of light collected by your telescope reaches your eyepiece, which is critical for observing faint deep-sky objects and resolving fine planetary 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\u003eThe 1.25\" Twist-Lock Eyepiece Holder\u003c\/h3\u003e\n\u003cp\u003eA significant upgrade from traditional thumbscrew holders, the Twist-Lock mechanism provides a secure, perfectly centered grip on any 1.25\" eyepiece. A simple twist of the orange ring tightens a single compression ring, locking the eyepiece in place without scratching or marring its barrel. This self-centering action guarantees optimal opto-mechanical alignment, preserving the sharpness your telescope is capable of. An integrated barrel stop also prevents accessories with long barrels from making contact with the diagonal's mirror.\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\u003eCelestron Dielectric vs. Standard Diagonals: A Brighter Image\u003c\/h3\u003e\n\u003cp\u003eA star diagonal is a critical component, and a lower-quality one can dim the view and degrade image quality. Standard aluminum diagonals typically offer 88-92% reflectivity, meaning a significant portion of the light from your telescope never reaches your eye. The Celestron Dielectric Star Diagonal, with its over 99% reflectivity, delivers a visibly brighter image. This upgrade alone can make the difference between detecting a faint galaxy's spiral arms or resolving subtle cloud bands on Jupiter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined Aluminum Construction:\u003c\/strong\u003e The black anodized aluminum housing is built for durability and rigidity, preventing flexure that can misalign optics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlare Control:\u003c\/strong\u003e The interior of the 1.25\" barrel is both glare-threaded and painted flat black to absorb stray light, maximizing image contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Compatibility:\u003c\/strong\u003e The barrel is threaded to accept standard 1.25\" astronomy filters, allowing you to easily enhance views of the Moon, planets, and nebulae.\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\"\u003eHow will the Celestron Dielectric Star Diagonal improve views of Jupiter through my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" SCT gathers a lot of light, and you want as much of it as possible to reach your eye. With over \u003cstrong\u003e99% reflectivity\u003c\/strong\u003e, this diagonal transmits more light than a standard one, making Jupiter's cloud belts and Great Red Spot appear brighter and with higher contrast. The diffraction-limited optics ensure you're seeing the full detail your telescope can resolve.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Twist-Lock holder on this diagonal secure enough for heavy 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Twist-Lock mechanism uses a \u003cstrong\u003esingle compression ring\u003c\/strong\u003e that applies even, firm pressure around the entire eyepiece barrel. This provides a more secure grip than a single thumbscrew, making it ideal for holding heavier, multi-element 1.25\" eyepieces, even when the telescope is pointed at the zenith.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Celestron 1.25\" Dielectric Diagonal work with my refractor telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This diagonal is designed for any telescope with a 1.25\" focuser or visual back, including refractors, Schmidt-Cassegrains (SCTs), and Maksutov-Cassegrains (MCTs). It provides a more comfortable 90° viewing angle, which is especially useful for refractors when observing objects high in the sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of 58-layer dielectric coatings over standard aluminum?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDielectric coatings are more reflective (over 99% vs. ~92% for enhanced aluminum) and far more durable. They are highly resistant to oxidation and cleaning, meaning the diagonal will maintain its peak brightness and contrast for many years, unlike aluminum coatings which can tarnish over time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 1.25\" filters with the Celestron Dielectric Star Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the 1.25\" nosepiece of the diagonal is threaded to accept standard 1.25\" eyepiece filters. You can easily attach a Moon filter, a light pollution filter, or colored planetary filters before inserting the diagonal into your telescope's focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"diffraction-limited\" optical quality mean for this diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt means the mirror surface is smooth and accurate enough that it does not introduce any perceptible degradation to the image formed by the telescope. A diffraction-limited diagonal will pass the light through without adding aberrations, preserving the finest details your main optics can resolve.\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\u003eDiagonal Size\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal Type\u003c\/td\u003e\n\u003ctd\u003eMirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Material\u003c\/td\u003e\n\u003ctd\u003eBK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eDielectric, 58 layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003eOver 99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Quality\u003c\/td\u003e\n\u003ctd\u003eDiffraction limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003e1.25\", Twist-Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Ring\u003c\/td\u003e\n\u003ctd\u003eYes, single ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Construction\u003c\/td\u003e\n\u003ctd\u003eMachined aluminum, black anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Interior\u003c\/td\u003e\n\u003ctd\u003eGlare threaded and painted flat black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e114.3mm x 50.8mm x 88.9mm (4.5\" x 2\" x 3.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.5 oz (212.6 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\"\u003e1.25” Dielectric Star Diagonal with Twist-Lock\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\" Barrel Dust Cap\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\" Eyepiece Holder Dust Cap\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.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 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":44967146258717,"sku":"CEL-93571","price":222.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Dielectric-Star-Diagonal-1-25-inch-with-Twist-Lock-93571-1__79941.1594230252.1280.1280.jpg?v=1684337198"},{"product_id":"celestron-dielectric-star-diagonal-with-twist-lock-2","title":"Celestron Dielectric Star Diagonal with Twist-Lock - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDelivers over 99% reflectivity with 58 layers of dielectric coatings\u003c\/li\u003e\n\u003cli\u003eSecure, self-centering Twist-Lock mechanism for 2\" and 1.25\" eyepieces\u003c\/li\u003e\n\u003cli\u003eIncludes interchangeable 2\" and SCT barrels for universal telescope compatibility\u003c\/li\u003e\n\u003cli\u003eDiffraction-limited optics ensure maximum image sharpness\u003c\/li\u003e\n\u003cli\u003eMachined aluminum housing with glare-threaded interior for high contrast\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 Dielectric Star Diagonal, 2” with Twist-Lock\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Dielectric Star Diagonal, 2” with Twist-Lock, is an essential upgrade for maximizing your telescope's optical performance. Its diffraction-limited BK7 mirror is treated with 58 layers of advanced dielectric coatings to achieve over 99% reflectivity, ensuring the brightest possible images reach your eyepiece. This 19 oz (538.6 g) diagonal provides a secure, perfectly centered connection for both 2\" and 1.25\" eyepieces via its non-marring Twist-Lock holders. With interchangeable barrels for both standard 2\" focusers and Schmidt-Cassegrain telescopes, it offers premium optical and mechanical quality for nearly any 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\u003e99%+ Reflectivity: 58-Layer Dielectric Coatings\u003c\/h3\u003e\n\u003cp\u003eThe core of this diagonal is a precision BK7 mirror engineered to be diffraction-limited, meaning it will not introduce any perceptible aberrations to the light path. This optical precision is protected by 58 layers of dielectric coatings, which push its light-gathering power to the theoretical maximum. With over 99% reflectivity, you lose virtually no light, resulting in visibly brighter images, higher contrast on faint deep-sky objects, and more vibrant planetary detail compared to standard aluminum or silver diagonals.\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 Twist-Lock Holders: Scratch-Free Clamping for 2\" and 1.25\" Eyepieces\u003c\/h3\u003e\n\u003cp\u003eCelestron replaces traditional thumbscrews with a superior Twist-Lock mechanism on both the main 2\" holder and the included 1.25\" step-down adapter. A simple twist of the orange anodized ring activates an internal compression ring that applies uniform pressure, perfectly centering the eyepiece in the optical path. This system not only provides a more secure hold but also guarantees that the barrels of your valuable eyepieces will never be scratched or scored.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachined Construction:\u003c\/strong\u003e The housing is built from black anodized, machined aluminum for durability and stray light control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Safety:\u003c\/strong\u003e An integrated stop within the 2\" barrel prevents long-barreled eyepieces or accessories from hitting the mirror surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlare Reduction:\u003c\/strong\u003e The interior of the barrels are glare-threaded and painted flat black to absorb off-axis reflections and maximize image contrast.\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\u003e2 Included Barrels: Universal Fit for Refractors and SCTs\u003c\/h3\u003e\n\u003cp\u003eThis diagonal is designed for immediate use on the two most common telescope types without requiring additional adapters. It includes two interchangeable barrels that thread securely onto the main diagonal housing for a rigid, flex-free connection. One barrel is a standard 2\" nosepiece for refractors and other telescopes with 2\" focusers, while the other is a dedicated SCT adapter for direct, threaded attachment to the rear cell of a Schmidt-Cassegrain. Both the 2\" barrel and the 1.25\" adapter are threaded to accept standard 2\" 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\u003eCelestron Dielectric vs. Standard Aluminum Diagonals: A Worthy Upgrade\u003c\/h3\u003e\n\u003cp\u003eWhile a standard aluminum diagonal is a functional accessory, it represents a significant bottleneck in the optical chain. The Celestron Dielectric Diagonal is a direct, measurable upgrade in two key areas.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLight Throughput:\u003c\/strong\u003e A standard enhanced aluminum diagonal typically reflects 90-92% of light. The Celestron Dielectric's 99%+ reflectivity delivers a noticeably brighter image, which can be the difference between detecting a faint spiral arm on a galaxy or missing it entirely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Dielectric coatings are far more durable than aluminum coatings. They will not degrade over time from exposure to the elements, ensuring your diagonal maintains its peak performance for years of use.\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 Celestron 2” Dielectric Diagonal with Twist-Lock superior to a standard diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Celestron Dielectric Diagonal offers two main advantages. First, its \u003cstrong\u003e58-layer dielectric coatings\u003c\/strong\u003e provide over 99% reflectivity, delivering a significantly brighter image than standard aluminum diagonals (which are typically 90-92% reflective). Second, the \u003cstrong\u003eTwist-Lock holder\u003c\/strong\u003e provides a more secure, perfectly centered grip on your eyepieces without the risk of scratching the barrel, unlike traditional thumbscrews.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the Celestron Dielectric Diagonal to my Schmidt-Cassegrain telescope (SCT)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUnscrew the standard 2\" barrel from the diagonal's body and replace it with the included \u003cstrong\u003eSCT adapter barrel\u003c\/strong\u003e. This allows you to thread the entire diagonal directly onto the rear cell threads of your SCT for the most secure connection possible, eliminating any potential for sag or misalignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the \u0026gt;99% reflectivity of this Celestron diagonal make a visible difference on faint objects like the Veil Nebula (NGC 6960)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. For faint, extended objects like the Veil Nebula (NGC 6960) or the Horsehead Nebula (Barnard 33), maximizing light throughput is critical. The jump from ~92% to over 99% reflectivity means more photons are reaching your eye, which can significantly improve contrast and make it easier to see delicate structures, especially when using nebula 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 the Twist-Lock holder on the Celestron diagonal over traditional thumbscrews?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Twist-Lock mechanism uses a compression ring to apply even pressure around the entire eyepiece barrel. This offers three benefits: it \u003cstrong\u003eperfectly centers the eyepiece\u003c\/strong\u003e in the optical path, it provides a \u003cstrong\u003emore secure grip\u003c\/strong\u003e than a single screw point, and it \u003cstrong\u003ewill not scratch or mar\u003c\/strong\u003e the finish of your eyepiece barrels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my 1.25” eyepieces and filters with this 2” Celestron diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The diagonal includes a \u003cstrong\u003e2\" to 1.25\" step-down adapter\u003c\/strong\u003e that also features the secure Twist-Lock mechanism. The 1.25\" adapter itself is threaded to accept standard 2\" filters, so you can use your 2\" filters with your 1.25\" eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does 'diffraction limited' mean for the Celestron Dielectric Star Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\"Diffraction limited\" is a term for optical quality, indicating that the mirror is so precisely figured that any remaining imperfections are smaller than the theoretical limit of resolution imposed by the physics of light (the Airy disk). In practical terms, it means the diagonal will transmit the image from your telescope without degrading its sharpness or detail.\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 colspan=\"2\"\u003e\u003cstrong\u003eOptical Specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal Size\u003c\/td\u003e\n\u003ctd\u003e50.8mm (2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal Type\u003c\/td\u003e\n\u003ctd\u003eMirror\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Material\u003c\/td\u003e\n\u003ctd\u003eBK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eDielectric, 58 layers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003eOver 99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Quality\u003c\/td\u003e\n\u003ctd\u003eDiffraction limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eMechanical Specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003e2\", Twist-Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\"-to-1.25\" Adapter\u003c\/td\u003e\n\u003ctd\u003eIncluded, Twist-Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompression Ring\u003c\/td\u003e\n\u003ctd\u003eYes, dual rings for 2\" holder, single for 1.25\" adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Construction\u003c\/td\u003e\n\u003ctd\u003eMachined aluminum, black anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Barrels\u003c\/td\u003e\n\u003ctd\u003e2\" barrel and SCT adapter barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Interior\u003c\/td\u003e\n\u003ctd\u003eGlare threaded and painted flat black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, on 2\" barrel and 1.25\" adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003e\u003cstrong\u003ePhysical Specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e152.4mm x 76.2mm x 101.6mm (6\" x 3\" x 4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e19 oz (538.6 g) (with stepdown adapter)\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\"\u003eDielectric Star Diagonal, 2\"\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\" Barrel\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\"\u003eSCT Adapter Barrel\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\" to 1.25\" Twist-Lock 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\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967146291485,"sku":"CEL-93573","price":361.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-Dielectric-Star-Diagonal-2-inch-with-Twist-Lock-93573-1__81338.1594230253.1280.1280.jpg?v=1684337200"},{"product_id":"celestron-x-cel-lx-3x-barlow-1-25","title":"Celestron X-Cel LX 3x Barlow - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTriples the magnification of any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003e3-element apochromatic optics for superior color correction\u003c\/li\u003e\n\u003cli\u003eFully multi-coated for maximum image contrast and light transmission\u003c\/li\u003e\n\u003cli\u003eBrass compression ring securely holds eyepieces without marring the barrel\u003c\/li\u003e\n\u003cli\u003eThreaded to accept standard 1.25\" astronomy filters\u003c\/li\u003e\n\u003cli\u003eWeighs just 5.4 oz (150 g)\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 X-Cel LX 3x Barlow Lens - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron X-Cel LX 3x Barlow Lens triples the power of any 1.25\" eyepiece using a 3-element apochromatic optical design. This premium Barlow weighs only 5.4 oz (150 g) and features fully multi-coated optics to deliver high-contrast, color-accurate views, making it an essential tool for high-magnification planetary and lunar 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\u003eApochromatic 3-Element Optics for 3x Magnification\u003c\/h3\u003e\n\u003cp\u003eInside the Celestron X-Cel LX is a 3-element optical design that provides a true 3x magnification factor without introducing false color (chromatic aberration). The apochromatic, fully multi-coated optics ensure that views of bright targets like Jupiter, Saturn, and the Moon remain sharp and high-contrast, preserving the fine detail your telescope resolves.\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 Handling: A 5.4 oz Design with Brass Compression Ring\u003c\/h3\u003e\n\u003cp\u003eThe X-Cel LX Barlow is designed for confident use, even in cold weather. A central rubber grip provides a secure hold, while the internal brass compression ring holds your 1.25\" eyepieces firmly without scratching their barrels. This is a significant improvement over simple thumbscrew designs that can damage eyepiece barrels over time.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrass Compression Ring:\u003c\/strong\u003e Offers a gentle, firm grip that centers the eyepiece perfectly in the optical path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRubber Grip:\u003c\/strong\u003e Ensures you maintain a secure hold on the 5.4 oz barrel, even while wearing gloves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Threads:\u003c\/strong\u003e The barrel is threaded for 1.25\" filters, allowing you to attach a filter once and swap eyepieces without moving the filter.\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\u003eTripling Power for High-Resolution Planetary \u0026amp; Lunar Views\u003c\/h3\u003e\n\u003cp\u003eThis Barlow is an ideal accessory for observers with short-tube, fast focal ratio telescopes who need a significant boost in power to see fine detail. By tripling magnification, the X-Cel LX 3x allows eyepieces with comfortable eye relief to function as high-power planetary eyepieces, pushing your telescope to its resolution limits on nights of steady 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\u003eX-Cel LX 3x vs. 2x Barlows: When More Power is the Right Choice\u003c\/h3\u003e\n\u003cp\u003eWhile a 2x Barlow is a versatile choice, the X-Cel LX 3x serves a specific and critical purpose. It allows you to achieve the very high magnifications needed for detailed planetary observation or splitting tight double stars without resorting to short, uncomfortable eyepieces.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvantage of 3x:\u003c\/strong\u003e If you own a set of medium-to-low power eyepieces, a 3x Barlow can fill the high-magnification gap in your collection, effectively doubling the number of magnifications at your disposal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsideration:\u003c\/strong\u003e 3x magnification requires good atmospheric seeing to be effective. On nights of poor seeing, the image may appear soft, but on a steady night, the detail resolved will be remarkable.\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 advantage of the X-Cel LX 3x Barlow's apochromatic design?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn \u003cstrong\u003eapochromatic\u003c\/strong\u003e design uses multiple lens elements (in this case, 3 elements) to correct for chromatic aberration, or false color. This means you won't see distracting purple or yellow fringing around bright objects like the limb of the Moon or bright planets like Jupiter, resulting in a sharper, higher-contrast image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Celestron X-Cel LX 3x Barlow perform on Saturn with an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" f\/10 SCT has a focal length of around 2000mm. With a 25mm eyepiece, you get 80x magnification. Adding the X-Cel LX 3x Barlow boosts this to 240x, an excellent magnification for seeing the Cassini Division in Saturn's rings, cloud bands on the planet's surface, and its major moons, provided the atmospheric seeing is stable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 1.25\" filters with the X-Cel LX 3x Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The barrel of the X-Cel LX 3x Barlow is threaded to accept standard 1.25\" filters. This is a convenient feature that allows you to attach a planetary or moon filter directly to the Barlow, so it works with every eyepiece you insert without needing to swap the filter each time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs 3x magnification too much for my short f\/5 Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot at all. In fact, short, fast telescopes are where a 3x Barlow is most useful. An f\/5 telescope requires more magnification to get detailed planetary views. The X-Cel LX 3x Barlow will triple the power of your existing eyepieces, allowing you to easily reach the optimal magnification range for lunar and planetary observing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of a brass compression ring on the X-Cel LX Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA brass compression ring provides a more secure and gentle grip on your eyepiece compared to a standard thumbscrew. When you tighten the thumbscrew, it presses the ring against the eyepiece barrel, holding it firmly and centered. This prevents the screw tip from digging into and scratching your eyepiece barrels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the X-Cel LX 3x Barlow work with any brand of 1.25\" eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Celestron X-Cel LX 3x Barlow is designed to work with any standard 1.25\" eyepiece, regardless of the manufacturer. The brass compression ring ensures a secure fit for any 1.25\" barrel.\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\u003e3x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e31.75mm (1.25\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eApochromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Elements\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Groups\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepted Eyepieces\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes, 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e90mm x 45mm x 45mm (3.54\" x 1.77\" x 1.77\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5.4 oz (150 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Protection\u003c\/td\u003e\n\u003ctd\u003eNot Waterproof\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=\"Celestron X-Cel LX 3x Barlow Lens - 1.25\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/93428-A_x-cel_lx_3x_barlow_1.jpg?v=1680517904\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eX-Cel LX 3x Barlow Lens - 1.25\"\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=\"Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-1.25-inch-Dustcap.jpg?v=1774403118\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Cap (Top)\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=\"Dust Cap\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron-1.25-inch-Dustcap.jpg?v=1774403118\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDust Cap (Bottom)\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.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 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":44967148880157,"sku":"CEL-93428","price":174.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-X-Cel-LX-1-25-inch-3x-Barlow-Lens-93428-1__27867.1594230261.1280.1280.jpg?v=1684337211"},{"product_id":"celestron-1-25-universal-barlow-and-t-adapter","title":"Celestron 1.25\" Universal Barlow and T-Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eThree-in-one design: 2x visual Barlow, prime focus T-adapter, and tele-extended T-adapter\u003c\/li\u003e\n\u003cli\u003eDoubles the magnification of any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003eConnects DSLR\/SLR cameras to a telescope for astrophotography\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" (32mm) barrel fits most focusers\u003c\/li\u003e\n\u003cli\u003eWeighs only 2.3 oz (65 g)\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 Universal Barlow and T-Adapter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Universal Barlow and T-Adapter is a single 1.25\" (32mm) accessory that provides three distinct functions for visual observers and imagers. This compact unit, with an external length of 76mm (3\"), functions as a 2x Barlow for visual use, a prime focus T-adapter for turning your telescope into a massive camera lens, and a \"tele-extended\" adapter that doubles photographic magnification. At a minimal weight of just 2.3 oz (65 g), it adds significant capability without impacting your telescope's balance.\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 2x Barlow for Any 1.25\" Eyepiece\u003c\/h3\u003e\n\u003cp\u003eIn its default configuration, this accessory functions as a powerful 2x Barlow. Simply insert any 1.25\" eyepiece to instantly double its magnification, effectively turning a 20mm eyepiece into a 10mm. This is an economical way to expand your range of available magnifications without buying a full new set of eyepieces, and it maintains the comfortable eye relief of the original eyepiece.\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\u003eYour Telescope as a Prime Photographic Lens\u003c\/h3\u003e\n\u003cp\u003eFor astrophotographers, the Celestron Universal Barlow \u0026amp; T-Adapter converts into a prime focus adapter. By unscrewing the lower lens element, you are left with a hollow extension tube with T-threads on top. Attach a camera-specific T-Ring (sold separately), and you can connect your DSLR or SLR camera directly to the telescope's 1.25\" focuser, using your scope's native focal length to capture wide-field images of the Moon or terrestrial subjects.\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 2x Magnifier for Astrophotography\u003c\/h3\u003e\n\u003cp\u003eThe third configuration, known as tele-extended or \"Barlowed\" imaging, solves a common problem with fast refractors and Newtonian reflectors. These telescopes often lack sufficient inward focus travel to reach a sharp focus in prime focus mode. By reattaching the Barlow lens, the adapter pushes the focal point outward, allowing the camera to reach focus while also doubling the telescope's effective focal length for 2x larger images on your camera sensor.\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 are the three ways I can use the Celestron Universal Barlow \u0026amp; T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis 1.25\" accessory serves three functions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2x Visual Barlow:\u003c\/strong\u003e Doubles the magnification of any 1.25\" eyepiece you insert into it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrime Focus T-Adapter:\u003c\/strong\u003e After unscrewing the lens element, it connects your DSLR\/SLR camera (with a T-Ring) to the telescope, using the scope's native focal length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\"Barlowed\" T-Adapter:\u003c\/strong\u003e It connects your camera to the telescope and uses the lens element to double the imaging magnification, which also helps achieve focus on scopes with limited travel.\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 anything else to connect my camera with this Universal T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. You will need a \u003cstrong\u003eT-Ring\u003c\/strong\u003e that is specific to your camera's brand and model (e.g., Canon EOS, Nikon F-mount). The T-Adapter has the male T-threads, and the T-Ring has the female T-threads on one side and the camera's lens mount on the other.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy short-tube refractor won't reach focus for prime focus photography. Will this adapter help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is exactly what the \"tele-extended\" mode is for. By keeping the Barlow lens element attached to the T-adapter, the focal plane is extended outward, which typically provides the extra focus travel needed for fast refractors and Newtonians to achieve a sharp image on the camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I use the Celestron Universal Barlow \u0026amp; T-Adapter to photograph the Moon with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor an 8\" SCT, you have two great options. For a full-disc image of the Moon, use the adapter in \u003cstrong\u003eprime focus mode\u003c\/strong\u003e (Barlow lens removed). This uses the telescope's native ~2000mm focal length. To capture close-up details of specific craters like Copernicus or Tycho, use it in \u003cstrong\u003etele-extended mode\u003c\/strong\u003e (Barlow lens attached) to double the effective focal length to ~4000mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes using the Celestron Universal Barlow \u0026amp; T-Adapter as a Barlow affect eye relief?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, one of the key benefits of this design is that it doubles the magnification while preserving the original eye relief of the eyepiece you are using. This is especially helpful for eyeglass wearers who rely on the long eye relief of low-power eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the lens element in the Celestron Universal Barlow \u0026amp; T-Adapter multi-coated?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the product is designed for high-contrast views, the manufacturer does not specify the exact coating details. It is engineered to provide sharp, 2x magnification for both visual and imaging applications.\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.3 oz (65 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\" (32mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Length\u003c\/td\u003e\n\u003ctd\u003e3\" (76mm)\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\"\u003eUniversal Barlow and T-Adapter Body\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\"\u003eRemovable 2x Barlow Lens Element\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\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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_Universal_Barlow_and_T-Adapter_Manual.pdf?v=1782260667\" 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\/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":44967180534045,"sku":"CEL-93640","price":97.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-1-25-inch-Universal-Barlow-and-T-Adapter-93640-1__03439.1594230498.1280.1280.jpg?v=1684338252"},{"product_id":"explore-scientific-2x-focal-extender-1-25","title":"Explore Scientific 2x Focal Extender - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDoubles the magnification of any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003eTelecentric optical design ensures a true 2x power factor\u003c\/li\u003e\n\u003cli\u003eMaintains the original eye relief of the eyepiece in use\u003c\/li\u003e\n\u003cli\u003eImproves image quality compared to standard Barlow lenses\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\u003eExplore Scientific 2x Focal Extender - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 2x Focal Extender doubles the power of any 1.25\" eyepiece, effectively turning your existing accessory case into a collection with twice the magnification options. Its advanced telecentric optical design delivers a consistent and true 2x magnification factor, a critical advantage over traditional Barlow lenses, especially for astrophotography.\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\u003eTelecentric Design: A Stable 2x Magnification Factor\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard Barlow, which uses a negative lens group, the Explore Scientific Focal Extender employs a multi-element telecentric design. This system produces light rays that exit parallel to the optical axis, ensuring the 2x magnification remains constant regardless of the distance to the eyepiece or camera sensor. This provides predictable, sharp, and evenly illuminated views across the entire field, which is essential for consistent results in 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\u003e2x Power While Preserving Eyepiece Eye Relief\u003c\/h3\u003e\n\u003cp\u003eOne of the most significant ergonomic benefits of this focal extender is its ability to preserve the native eye relief of your eyepiece. Lower-power eyepieces typically have more generous eye relief, and by using the 2x extender, you can achieve high magnification while enjoying that same comfortable viewing distance. This makes high-power observing sessions more accessible and comfortable, especially for those who wear glasses.\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\u003eFocal Extender vs. Traditional Barlow: Why Telecentric Matters\u003c\/h3\u003e\n\u003cp\u003eThe choice between a focal extender and a Barlow lens comes down to optical stability and intended use. While both increase magnification, their methods differ significantly, leading to different outcomes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraditional Barlow Lens:\u003c\/strong\u003e A Barlow's magnification can vary depending on how far the eyepiece is spaced from the lens. This can be useful for fine-tuning image scale but introduces unpredictability. The diverging light cone can also induce vignetting and degrade edge-of-field sharpness, especially in fast telescopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExplore Scientific Focal Extender:\u003c\/strong\u003e The telecentric design provides a fixed, true 2x magnification that does not change with spacing. Its parallel light path is much gentler on complex eyepieces, preserving their designed optical corrections and maintaining image quality from the center to the edge of the field. This makes it the superior choice for imaging and for observers who demand consistency.\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 Explore Scientific 2x Focal Extender over a standard 2x Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is its \u003cstrong\u003etelecentric optical design\u003c\/strong\u003e. This ensures a true, fixed 2x magnification regardless of eyepiece or camera spacing, providing more consistent and predictable results than a traditional Barlow lens, whose magnification can fluctuate with distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Explore Scientific 2x Focal Extender help observers who wear eyeglasses?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis focal extender preserves the original eye relief of the eyepiece you pair it with. You can use a comfortable, long-eye-relief, low-power eyepiece to achieve high magnification, allowing you to keep your glasses on and still see the entire field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a 25mm eyepiece for my 8\" f\/10 SCT. What will the Explore Scientific 2x Focal Extender do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn a typical 8\" f\/10 SCT with a 2032mm focal length, your 25mm eyepiece provides about 81x magnification. Adding the Explore Scientific 2x Focal Extender will double that to approximately 162x, giving you a much closer view of planetary detail on objects like Jupiter or Saturn, all while you continue to use your comfortable 25mm eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Explore Scientific 2x Focal Extender to image Jupiter with my planetary camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The telecentric design is ideal for planetary imaging. It increases your telescope's effective focal length by a precise 2x factor, enlarging the planet on your camera sensor without introducing the optical aberrations that can occur with standard Barlow lenses in an imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific 2x Focal Extender work with my specialty eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the parallel light path from the telecentric design is much more forgiving on complex, wide-field eyepieces than the steep light cone from a Barlow. It helps maintain the high-quality performance your premium eyepieces were designed to deliver, even at double the power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes adding the Explore Scientific 2x Focal Extender reduce image brightness?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAny time you increase magnification, the image will become dimmer because the same amount of light is spread over a larger area. While the multi-coated optics in the focal extender are highly efficient, the dimming you perceive is a direct and unavoidable consequence of the 2x increase in magnification, not a loss of light through the device itself.\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e8122570104178\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198392605,"sku":"ES-FE02-125","price":167.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-1-25-inch-2x-Focal-Extender-FE02-125-1__57406.1594240336.1280.1280.jpg?v=1684338801"},{"product_id":"explore-scientific-3x-focal-extender-1-25","title":"Explore Scientific 3X Focal Extender - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eInstantly triples the magnification of any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003eTelecentric optical design provides consistent magnification\u003c\/li\u003e\n\u003cli\u003eMaintains the eye relief of the original eyepiece\u003c\/li\u003e\n\u003cli\u003eImproves image quality compared to standard Barlow lenses\u003c\/li\u003e\n\u003cli\u003eIdeal for high-power planetary viewing and 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\u003eExplore Scientific 3X Focal Extender - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 3X Focal Extender instantly triples the power of any 1.25\" eyepiece in your collection. This telecentric design turns three of your favorite low-power eyepieces into a versatile set offering six distinct magnifications, unlocking high-power views without sacrificing optical integrity or viewing comfort.\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\u003eTriple Your Magnification with a 1.25\" Barrel\u003c\/h3\u003e\n\u003cp\u003eThis focal extender multiplies the utility of your existing eyepiece case. By inserting this 3X extender, you can achieve magnifications typically reserved for short focal length eyepieces, which often have tight, uncomfortable eye relief. It allows you to push the power on clear nights to resolve fine detail on Jupiter's cloud bands or split tight double stars, all while using your familiar, comfortable long-focal-length eyepieces.\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\u003eTelecentric Optics: A Stable 3X Magnification Factor\u003c\/h3\u003e\n\u003cp\u003eUnlike a traditional Barlow lens, the Explore Scientific Focal Extender uses a multi-element telecentric design. This system ensures light rays exit parallel to the optical axis, delivering a true, fixed 3X magnification regardless of the distance between the extender and your eyepiece or camera sensor. This stability is critical for astrophotography, where precise focal length is required for accurate image scaling, and it eliminates the variable magnification that can occur with Barlows.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Magnification:\u003c\/strong\u003e The 3X power factor remains constant, providing predictable and repeatable results for both visual observation and imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintained Eye Relief:\u003c\/strong\u003e You get to enjoy the generous eye relief of your lower-power eyepiece, a significant advantage for eyeglass wearers and for comfortable extended viewing sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Field Flatness:\u003c\/strong\u003e The telecentric design helps to reduce field curvature, resulting in sharper stars at the edge of the field compared to simpler amplifier lenses.\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\u003eFocal Extender vs. Barlow: Why the Telecentric Design Matters\u003c\/h3\u003e\n\u003cp\u003eWhile both devices increase magnification, their optical approach is fundamentally different. A standard Barlow's magnification factor changes as you alter its spacing from the eyepiece, which can be unpredictable. The Explore Scientific Focal Extender's telecentric design offers superior optical correction and stability.\u003c\/p\u003e\n\u003cp\u003eThis makes it the preferred choice for observers using premium, complex eyepieces or imagers who require a flat field and consistent focal length. The parallel light path is less demanding on eyepiece optics, preserving the original image quality without introducing additional aberrations.\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 Explore Scientific 3X Focal Extender and a standard 3X Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is the \u003cstrong\u003etelecentric optical design\u003c\/strong\u003e of the Focal Extender. This provides a fixed, consistent 3X magnification regardless of spacing. A standard Barlow's magnification can vary depending on its distance from the eyepiece or camera sensor. The telecentric design also better preserves the eye relief of the eyepiece and provides superior optical correction across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the 3X Focal Extender affect my view of Saturn in an 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn an 8\" f\/10 SCT (2032mm focal length), a 25mm eyepiece gives you 81x magnification. Adding the Explore Scientific 3X Focal Extender will increase that to 243x. This is an excellent magnification for resolving details like the Cassini Division in Saturn's rings and observing cloud bands on the planet itself, assuming steady atmospheric conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Explore Scientific 3X Focal Extender change the eye relief of my eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA key benefit of the telecentric design is that it largely \u003cstrong\u003epreserves the original eye relief\u003c\/strong\u003e of the eyepiece you use it with. This means you can achieve high power while still enjoying the comfortable, long eye relief of a lower-power eyepiece, which is especially beneficial for eyeglass wearers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 3X Focal Extender a good choice for planetary imaging with a high-frame-rate camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is an excellent choice. The telecentric design provides a flat field and ensures the magnification is a consistent 3X, which is critical for planetary imaging. It effectively triples your telescope's focal length, increasing the image scale on your camera sensor to make planets like Jupiter, Saturn, and Mars appear larger and more detailed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 1.25\" focal extender work with my 2\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this model is designed specifically for \u003cstrong\u003e1.25\" eyepieces and accessories\u003c\/strong\u003e. It will not fit 2\" eyepieces. You must use eyepieces with a 1.25\" barrel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs there a downside to using the Explore Scientific 3X Focal Extender?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eLike any device that triples magnification, the 3X Focal Extender will result in a dimmer image and make your telescope more sensitive to atmospheric instability (seeing). It requires good seeing conditions to deliver its best results. However, its superior optical design minimizes aberrations compared to simpler Barlow lenses.\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\u003e3X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eTelecentric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257010394\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\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198458141,"sku":"ES-FE03-125","price":195.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-1-25-inch-3X-Focal-Extender-FE03-125-1__93025.1594240336.1280.1280.jpg?v=1684338802"},{"product_id":"explore-scientific-5x-focal-extender-1-25","title":"Explore Scientific 5X Focal Extender - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDelivers a 5X magnification increase to any 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003e1.25\" barrel diameter fits standard focusers and accessories\u003c\/li\u003e\n\u003cli\u003eTelecentric optical design provides consistent, true-to-spec magnification\u003c\/li\u003e\n\u003cli\u003eMaintains the original eye relief of the eyepiece for comfortable viewing\u003c\/li\u003e\n\u003cli\u003eIdeal for high-resolution planetary imaging and visual 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\u003eExplore Scientific 5X Focal Extender - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 5X Focal Extender multiplies the power of any 1.25\" eyepiece by a factor of 5, transforming a basic eyepiece collection into a versatile high-power toolkit. Its advanced telecentric optical design maintains the comfortable eye relief of your lower-power eyepieces, delivering a significant jump in magnification without the typical eye strain associated with short focal length designs.\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\u003e5X Power: A Major Leap in Magnification\u003c\/h3\u003e\n\u003cp\u003eA 5X power increase provides the high magnification needed to resolve fine details on planetary surfaces, split tight double stars, and examine the structure of small planetary nebulae. This focal extender effectively adds a new, very high-power option for every eyepiece you own, expanding your observing capabilities without requiring a whole new set of dedicated high-magnification eyepieces.\u003c\/p\u003e\n\u003cp\u003eThis significant boost in magnification will result in a dimmer image, a necessary trade-off for increased image scale. For this reason, the 5X Focal Extender performs best on bright targets like the Moon, Jupiter, Saturn, and Mars, where light grasp is plentiful.\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\u003eTelecentric Design: Consistent 5X Magnification for Imaging \u0026amp; Visual\u003c\/h3\u003e\n\u003cp\u003eUnlike a traditional Barlow lens, the Explore Scientific Focal Extender uses a telecentric design. This multi-element system ensures light rays exit the extender parallel to the optical axis, which results in a fixed, true-to-spec magnification factor regardless of the distance between the extender and the eyepiece or camera sensor.\u003c\/p\u003e\n\u003cp\u003eThis consistency is critical for astrophotography. Whether you add a filter wheel or an off-axis guider, the image scale remains a predictable 5X. For visual observers, this design contributes to sharp performance across the entire field of view, especially in faster telescopes.\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\u003ePreserving Eye Relief: High Power Without the Discomfort\u003c\/h3\u003e\n\u003cp\u003eHigh-power eyepieces are notoriously difficult to look through, often featuring very short eye relief that forces you to press your eye against the lens. The 5X Focal Extender solves this problem by allowing you to use your comfortable, long-eye-relief, low-power eyepieces for high-magnification views.\u003c\/p\u003e\n\u003cp\u003eYou can insert a 25mm Plössl with 15mm of eye relief and get the power of a 5mm eyepiece while retaining that comfortable 15mm of eye relief. This is a significant advantage for all observers and is especially beneficial for those who wear glasses.\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\u003eFocal Extender vs. Traditional Barlow Lens: Why Telecentric Matters\u003c\/h3\u003e\n\u003cp\u003eWhile a conventional Barlow lens is a simple and effective way to increase magnification, its performance is variable. A Barlow's magnification factor changes depending on its distance from the eyepiece, making it difficult to achieve a precise, repeatable image scale. The telecentric Focal Extender, by contrast, delivers a constant 5X magnification factor.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePredictable Magnification:\u003c\/strong\u003e The extender's 5X power is fixed, which is essential for calculating image scales in planetary imaging setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Edge Correction:\u003c\/strong\u003e The parallel light rays from the telecentric design often result in sharper star images at the edge of the field compared to a simple Barlow, particularly in telescopes with fast focal ratios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintained Eye Relief:\u003c\/strong\u003e The Focal Extender is explicitly designed to preserve the eye relief of the eyepiece it's paired with, a feature not always prioritized in standard Barlow designs.\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 Explore Scientific 5X Focal Extender over a standard 5X Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is its \u003cstrong\u003etelecentric design\u003c\/strong\u003e. This ensures the Explore Scientific 5X Focal Extender provides a consistent and precise 5X magnification, regardless of its spacing from a camera or eyepiece. A standard Barlow's magnification can vary with distance, making it less predictable for imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific 5X Focal Extender work with my 2\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This model of the Explore Scientific 5X Focal Extender is designed with a \u003cstrong\u003e1.25\" barrel\u003c\/strong\u003e and is only compatible with 1.25\" eyepieces and accessories. It will not fit into a 2\" focuser without an adapter, and it cannot accept 2\" eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Explore Scientific 5X Focal Extender perform for imaging Jupiter with my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" f\/10 SCT has a focal length of around 2000mm. The Explore Scientific 5X Focal Extender will increase this to an effective focal length of 10,000mm (f\/50). This very long focal length is excellent for achieving a large image scale on Jupiter with a planetary camera, allowing you to capture fine details in its cloud bands and the Great Red Spot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI wear glasses. How does the Explore Scientific 5X Focal Extender help with high-magnification viewing of the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Explore Scientific 5X Focal Extender allows you to use a low-power eyepiece, which typically has long and comfortable eye relief, to achieve high magnification. For example, you can use a 32mm Plössl (which you can easily use with glasses on) to get the power of a 6.4mm eyepiece, making detailed lunar observation comfortable without needing to remove your glasses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Explore Scientific 5X Focal Extender reduce the field of view?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Any device that increases magnification will inherently reduce the true field of view by the same factor. When using the Explore Scientific 5X Focal Extender, the patch of sky you see will be 5 times smaller, but the objects within it will appear 5 times larger.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a 5X magnification increase from the Explore Scientific Focal Extender too much for my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 5X increase is substantial and may exceed the practical magnification limit of your telescope, especially on nights with poor atmospheric seeing. It is best suited for bright targets like the Moon and planets in telescopes with excellent optics and stable seeing conditions. For smaller telescopes or nights of average seeing, a 2X or 3X focal extender may provide more consistently sharp 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\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e5X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257010387\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\"\u003eExplore Scientific 5X Focal Extender - 1.25\"\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific USA One Year\/Limited Extended Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198523677,"sku":"ES-FE05-125","price":181.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-1-25-inch-5X-Focal-Extender-FE05-125-1__66175.1594240337.1280.1280.jpg?v=1684338804"},{"product_id":"explore-scientific-2x-focal-extender-2","title":"Explore Scientific 2X Focal Extender - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2X Focal Extender\u003c\/li\u003e\n\u003cli\u003e2-inch Barrel with 1.25-inch Adapter\u003c\/li\u003e\n\u003cli\u003eTelecentric Optical Design\u003c\/li\u003e\n\u003cli\u003eFully EMD-Coated Optics\u003c\/li\u003e\n\u003cli\u003eEdge-Blackened Lens Elements\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\u003eExplore Scientific 2X Focal Extender - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 2X Focal Extender doubles the power of your entire eyepiece collection, accepting both 1.25-inch and 2-inch formats for maximum compatibility. Its telecentric optical design delivers a consistent 2X magnification factor, unlike a traditional Barlow lens, ensuring predictable, high-contrast views for both visual astronomy and astrophotography.\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\u003e2X Power for All Your Eyepieces: 1.25\" and 2\" Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis 2-inch focal extender instantly doubles the utility of your eyepiece case. By providing 2X magnification, it allows a set of three eyepieces to deliver six different powers, filling gaps in your magnification range without the cost of new eyepieces. Its versatile design accepts both 2-inch and 1.25-inch eyepieces, ensuring it works with every eyepiece you own, from wide-field sweepers to high-power planetary models.\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 True 2X Telecentric Design for Superior Contrast\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard Barlow lens whose magnification can change with distance, the Explore Scientific 2X Focal Extender uses a multi-element telecentric design. This advanced optical system ensures light rays remain parallel to the optical axis, delivering a fixed, true-to-spec 2X magnification regardless of eyepiece or camera spacing. To maximize image fidelity, all air-to-air lens surfaces are fully EMD-coated and all lens elements are edge-blackened, which together suppress internal reflections and produce a darker background sky with superior 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\u003eMaintain Comfortable Eye Relief at 2X Magnification\u003c\/h3\u003e\n\u003cp\u003eOne of the greatest advantages of a focal extender is its ability to preserve the comfortable eye relief of your low-power eyepieces. When you use this 2X extender with a long eye relief 30mm or 40mm eyepiece, you get the benefit of high magnification without the tight, uncomfortable eye placement typical of short focal length eyepieces. This is a significant advantage for eyeglass wearers and for anyone conducting long, relaxed observing sessions at high power.\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 is the Explore Scientific 2X Focal Extender different from a standard 2X Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe key difference is its \u003cstrong\u003etelecentric optical design\u003c\/strong\u003e. A traditional Barlow's magnification changes depending on its distance from the eyepiece or camera sensor. The Explore Scientific Focal Extender delivers a constant, true 2X magnification factor, providing more consistent and predictable results for both visual use and imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my 1.25\" eyepieces with this 2-inch Explore Scientific Focal Extender?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Explore Scientific 2X Focal Extender is designed to be versatile and accepts both 2-inch and 1.25-inch eyepieces and accessories. This allows you to double the magnification of your entire eyepiece collection with a single device.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific 2X Focal Extender help me see more detail on Jupiter with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. Using the 2X Focal Extender with a low-to-mid power eyepiece in your 8\" Schmidt-Cassegrain will double the magnification, making it easier to resolve fine details like cloud bands on Jupiter, the Cassini Division in Saturn's rings, and small craterlets on the Moon. It allows you to reach the ideal planetary magnification while using an eyepiece with more comfortable eye relief.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this 2X Focal Extender preserve the eye relief of my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, and this is one of its primary benefits. When you use the Explore Scientific 2X Focal Extender, you retain the generous eye relief of the eyepiece it's paired with. This lets you enjoy high-power views without the eyestrain or \"squinting\" associated with short focal length eyepieces, a feature especially valuable for observers who wear glasses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Explore Scientific 2X Focal Extender suitable for astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The telecentric design is ideal for imaging because it provides a consistent magnification factor and a flatter field than many standard Barlows. It's an excellent choice for increasing your image scale for planetary, lunar, and solar imaging with the appropriate filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will this extender perform with a 24mm 82-degree eyepiece in my 10\" f\/4.7 Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn this setup, the Explore Scientific 2X Focal Extender will effectively turn your 24mm eyepiece into a 12mm eyepiece, doubling the magnification for high-power views of globular clusters like M13 or planetary nebulae like the Ring Nebula (M57). You get the power of a 12mm eyepiece while enjoying the comfortable eye relief and immersive feel of your 24mm 82-degree eyepiece.\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e8122570104000\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198589213,"sku":"ES-FE02-020","price":251.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-2-inch-2X-Focal-Extender-FE02-020-FE02-020-1__73557.1594240337.1280.1280.jpg?v=1684338671"},{"product_id":"explore-scientific-3x-focal-extender-2","title":"Explore Scientific 3X Focal Extender - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides 3X magnification for any 2\" or 1.25\" eyepiece\u003c\/li\u003e\n\u003cli\u003eTelecentric optical design ensures consistent magnification\u003c\/li\u003e\n\u003cli\u003eFully EMD-coated optics for maximum light transmission\u003c\/li\u003e\n\u003cli\u003eEdge-blackened lens elements enhance image contrast\u003c\/li\u003e\n\u003cli\u003ePreserves the original eye relief of your eyepiece\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\u003eExplore Scientific 3X Focal Extender - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 3X Focal Extender triples your eyepiece collection's magnification options, accepting both 2-inch and 1.25-inch eyepiece formats. Its telecentric optical design delivers a true 3X power factor that remains constant regardless of spacing, a critical advantage over traditional Barlow lenses for both visual observation and astrophotography.\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\u003eTriple Your Eyepiece Collection with 3X Power\u003c\/h3\u003e\n\u003cp\u003eThis 3X Focal Extender instantly expands the utility of your existing eyepieces. By placing it in your telescope's 2-inch focuser, you effectively give every eyepiece you own a second, higher-magnification version. An accessory case with three eyepieces now yields six distinct magnification choices, providing greater flexibility for targeting planets, double stars, and small deep-sky objects without needing to purchase a full new set of high-power eyepieces.\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\u003eTelecentric Design: A True 3X Magnification Factor\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard Barlow, the Explore Scientific Focal Extender uses a telecentric design. This multi-element system ensures light rays exit the extender parallel to the optical axis, which produces a fixed, true-to-spec magnification factor. Whether you're using it for visual work or attaching a camera, the 3X power remains consistent, eliminating the variability that can occur with Barlows when eyepiece or camera spacing is altered.\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 for 2\" Eyepieces \u0026amp; Preserved Eye Relief\u003c\/h3\u003e\n\u003cp\u003eOptical quality is maintained through Enhanced Multilayer Deposition (EMD) coatings on all air-to-glass surfaces and edge-blackened lens elements. This combination maximizes light throughput while suppressing internal reflections, resulting in superior image contrast. A significant ergonomic advantage is that the extender preserves the native eye relief of the eyepiece in use, allowing you to enjoy the comfortable, long eye relief of a low-power eyepiece even at high magnifications—a crucial benefit for eyeglass wearers.\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\u003eFocal Extender vs. Barlow: Why a 3X Telecentric Matters\u003c\/h3\u003e\n\u003cp\u003eWhile a traditional Barlow lens may be lighter or less expensive, its simple design introduces optical trade-offs. The telecentric focal extender is engineered for more demanding applications where optical consistency is paramount.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Magnification:\u003c\/strong\u003e A Barlow's magnification changes with distance from the eyepiece. The 3X Focal Extender's telecentric design locks the magnification at 3X, which is critical for repeatable imaging setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintained Image Quality:\u003c\/strong\u003e Telecentric extenders are better corrected for field curvature, keeping stars sharp across a wider field of view, especially in fast telescopes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParallel Light Path:\u003c\/strong\u003e The parallel light rays exiting the extender are less demanding on complex eyepieces and are ideal for use with narrowband H-alpha filters, like those used for solar observing, which require a parallel beam of light for optimal 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 main difference between the Explore Scientific 3X Focal Extender and a standard 3X Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary difference is the \u003cstrong\u003etelecentric optical design\u003c\/strong\u003e. This ensures the Explore Scientific 3X Focal Extender delivers a consistent 3X magnification regardless of its distance from the eyepiece or camera sensor. A standard Barlow's magnification can vary with spacing, making the focal extender a more precise tool for astrophotography and critical visual observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2\" focal extender work with my 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Explore Scientific 3X Focal Extender is designed to accept both 2-inch and 1.25-inch eyepieces. It includes an adapter to securely hold your 1.25-inch accessories, making it a versatile addition to any setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes using the 3X Focal Extender affect the eye relief of my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, and this is a major advantage. The focal extender is designed to \u003cstrong\u003epreserve the original eye relief\u003c\/strong\u003e of the eyepiece you use with it. This means you can enjoy the comfortable, long eye relief of a low-power eyepiece while observing at 3X the magnification, which is especially beneficial for eyeglass wearers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the 3X Focal Extender perform for imaging Jupiter with my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt's an excellent choice for this scenario. An 8\" f\/10 SCT has a focal length of around 2000mm. The 3X Focal Extender will triple this to an effective focal length of 6000mm (f\/30). This provides the high image scale necessary to resolve fine details in Jupiter's cloud bands, such as the Great Red Spot (GRS) and smaller atmospheric storms, with a planetary camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI want to see more detail in the Orion Nebula (M42) with my 100mm f\/7 refractor. Is this 3X extender the right tool?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your goal. For resolving the Trapezium cluster at the heart of M42, the 3X extender is perfect. However, the Orion Nebula is a large object, and tripling your magnification will significantly narrow your field of view, potentially cropping out the nebula's faint outer structures. For wide, expansive views of large nebulae, using a low-power eyepiece without the extender is usually preferred.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Explore Scientific 2\" Focal Extender heavy enough to cause balance issues?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 2-inch, multi-element accessory like this focal extender is substantially built and will add weight to the back of your telescope. It is always good practice to re-check your telescope's balance on its mount after inserting or removing heavy accessories to ensure smooth tracking and prevent strain on the motors.\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e8122570185672\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198621981,"sku":"ES-FE03-020","price":251.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-2-inch-3X-Focal-Extender-FE03-020-FE03-020-1__19065.1594240337.1280.1280.jpg?v=1684338676"},{"product_id":"explore-scientific-99-reflective-diagonal-2","title":"Explore Scientific 99% Reflective Diagonal -2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2-inch Diagonal Barrel with Tapered Safety Edge\u003c\/li\u003e\n\u003cli\u003e99% Reflectivity from Dielectric Coatings\u003c\/li\u003e\n\u003cli\u003eIncludes 1.25-inch Eyepiece Adapter\u003c\/li\u003e\n\u003cli\u003eNon-Marring Brass Compression Rings\u003c\/li\u003e\n\u003cli\u003eProtects Telescope Optics with Included Dust Covers\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\u003eExplore Scientific 99% Reflective Diagonal - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 99% Reflective Diagonal directs light from your 2-inch focuser to your eyepiece with minimal loss, using advanced dielectric coatings to achieve 99% reflectivity. This package includes a 1.25-inch adapter, allowing you to use eyepieces of both standard barrel sizes while maintaining a bright, high-contrast image path for your refractor or catadioptric 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\u003e99% Dielectric Coatings for Maximum Brightness\u003c\/h3\u003e\n\u003cp\u003eA standard diagonal mirror can lose between 5% and 12% of the light gathered by your telescope, dimming faint details on planets and deep-sky objects. The Explore Scientific diagonal uses multi-layer dielectric coatings on its first-surface mirror to reflect 99% of incoming light, preserving the brightness and contrast your main optics deliver. This difference is immediately noticeable on faint galaxies or the subtle cloud bands of Jupiter.\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 2\" and 1.25\" Connections: Compression Rings \u0026amp; Tapered Barrel\u003c\/h3\u003e\n\u003cp\u003eThis diagonal's mechanical design protects both your equipment and your views. Brass compression rings on both the 2-inch holder and the 1.25-inch adapter gently clamp your eyepieces without marring their barrels, ensuring a secure and centered fit. The 2-inch insert barrel features a double taper, which prevents the diagonal from falling out of the focuser if a set screw accidentally loosens.\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 a 99% Dielectric Diagonal Matters vs. Standard Aluminum\u003c\/h3\u003e\n\u003cp\u003eWhile a standard enhanced aluminum diagonal offers around 95% reflectivity when new, its coatings are soft and degrade over time with exposure and cleaning. Dielectric coatings are far more durable—almost as hard as the glass itself—ensuring the 99% reflectivity lasts for the life of the diagonal. For visual observers chasing the faintest details, that extra few percent of light can be the difference between seeing a spiral arm in a galaxy and missing it entirely.\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 Explore Scientific 99% Reflective Diagonal over a standard one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is \u003cstrong\u003elight transmission\u003c\/strong\u003e. The Explore Scientific diagonal's dielectric coatings reflect 99% of light, compared to 88-95% for standard aluminum or silver diagonals. This results in a visibly brighter image, which is critical for observing faint deep-sky objects. These coatings are also far more durable and resistant to aging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I notice a difference with the Explore Scientific 99% diagonal on faint objects like the Veil Nebula (NGC 6960) in my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. On faint, extended objects like the Veil Nebula (NGC 6960) or the Horsehead Nebula (Barnard 33), maximizing light throughput is essential. The jump from a standard 90% diagonal to this 99% model provides a noticeable boost in contrast and brightness, especially when using nebula filters like an O-III or H-beta.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the compression ring on the Explore Scientific 2\" diagonal protect my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstead of a single set screw that digs into the eyepiece barrel, a \u003cstrong\u003ebrass compression ring\u003c\/strong\u003e provides a firm, even grip around the entire circumference. This prevents the ugly scratches and gouges that set screws can cause, preserving the value and finish of your expensive 2-inch and 1.25-inch eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Explore Scientific 99% diagonal with my 1.25-inch eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The diagonal comes with a \u003cstrong\u003e1.25-inch adapter\u003c\/strong\u003e that fits securely into the 2-inch eyepiece holder. This adapter also uses a brass compression ring, so your 1.25-inch eyepieces receive the same non-marring protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI use a refractor for planetary observing. Does a 99% reflective diagonal offer any benefit for Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile planets like Jupiter are bright, a 99% reflective diagonal still provides a significant benefit. By minimizing light scatter and maximizing transmission, it improves image contrast, making it easier to resolve fine details like small ovals in the cloud belts, subtle colors in the Great Red Spot, and the faint crepe ring of Saturn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes a dielectric diagonal like the Explore Scientific 2\" model introduce any color error?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. High-quality, multi-layer dielectric mirror coatings are designed to be color-neutral across the entire visual spectrum. Unlike some less expensive diagonals, the Explore Scientific 99% diagonal will not introduce any false color or tint to the image, ensuring the view remains as pure as your telescope's objective lens can deliver.\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\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003e99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating Type\u003c\/td\u003e\n\u003ctd\u003eDielectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Adapter\u003c\/td\u003e\n\u003ctd\u003e1.25\" Included\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257010264\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\"\u003eExplore Scientific 2\" Dielectric Diagonal\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\" Eyepiece 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\"\u003eDust Cover (Telescope Side)\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\"\u003eDust Cover (Eyepiece Side)\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\u003cp\u003eThis accessory does not require specific drivers or manuals for operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198884125,"sku":"ES-DD02-00CF","price":307.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-99-Reflective-2-inch-Diagonal-DD02-00CF-1__77122.1594240339.1280.1280.jpg?v=1684338697"},{"product_id":"explore-scientific-99-reflective-diagonal-3","title":"Explore Scientific 99% Reflective Diagonal -3\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e3-inch diagonal body for large format focusers\u003c\/li\u003e\n\u003cli\u003e99% reflectivity from durable dielectric coatings\u003c\/li\u003e\n\u003cli\u003eIncludes a 2-inch eyepiece adapter with compression ring\u003c\/li\u003e\n\u003cli\u003eDouble-tapered barrel prevents accidental falls\u003c\/li\u003e\n\u003cli\u003eSolid, lightweight 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\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\u003eExplore Scientific 99% Reflective Diagonal - 3\"\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 3-inch Dielectric Diagonal uses a first-surface mirror with a 99% reflective coating to deliver the brightest possible image from your telescope's focal plane to the eyepiece. Designed for telescopes with large 3-inch focusers, this diagonal includes a 2-inch adapter, ensuring it can securely hold the most common large-format eyepieces and imaging accessories.\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\u003e99% Dielectric Coating: Maximizing Light Throughput to Your Eyepiece\u003c\/h3\u003e\n\u003cp\u003eA diagonal's primary job is to preserve the light collected by your telescope's main optic. The multi-layer dielectric coating on this mirror reflects 99% of incoming light, a noticeable improvement over standard aluminum or even enhanced aluminum coatings. This increase in brightness is especially critical when observing faint deep-sky objects like the Veil Nebula (NGC 6960) or distant galaxies where every photon counts.\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 Mechanical Design: 3-Inch Body with Compression Rings and a Safety Taper\u003c\/h3\u003e\n\u003cp\u003eThis diagonal is built for both stability and safety. Eyepieces are held in place by a brass compression ring on the included 2-inch adapter, which prevents the marring and scratching caused by simple set screws. The 3-inch insert barrel features a double taper, a crucial safety feature that prevents the diagonal from slipping out of the focuser if the locking screw becomes loose.\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\u003e3-Inch vs. 2-Inch Diagonals: Why the Larger Format Matters\u003c\/h3\u003e\n\u003cp\u003eWhile a 2-inch diagonal is sufficient for most visual astronomy, a 3-inch model is essential for preventing vignetting in specific applications. Large refractor telescopes and astrographs with 3-inch or larger focusers can illuminate a very wide field, and a 3-inch diagonal ensures that the light cone is not cut off before it reaches a full-frame imaging sensor or an extreme wide-field 2-inch eyepiece.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Imagers:\u003c\/strong\u003e If you are using a large-format CMOS or CCD camera, a 3-inch diagonal provides a larger clear aperture to fully illuminate the sensor and avoid darkened corners in your images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Visual Observers:\u003c\/strong\u003e While not always necessary, it provides peace of mind that your widest 2-inch eyepieces are operating without any restriction from the diagonal itself.\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 benefit of the Explore Scientific 3-inch Diagonal's 99% reflectivity?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e99% reflectivity\u003c\/strong\u003e from its dielectric coating ensures maximum light transmission from your telescope to your eyepiece. This results in brighter images, which is especially important for viewing faint deep-sky objects like nebulae and galaxies, compared to standard diagonals which may only reflect 90-96% of the light.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific 3-inch Diagonal fit my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis diagonal is designed specifically for telescopes equipped with a \u003cstrong\u003e3-inch focuser\u003c\/strong\u003e. It will not fit standard 1.25-inch or 2-inch focusers. It is most commonly used with large apochromatic refractors and Ritchey-Chrétien telescopes designed for wide-field imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy would I need a 3-inch diagonal instead of a 2-inch for my large refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a large refractor with a 3-inch or larger focuser, a 3-inch diagonal is critical for preventing \u003cstrong\u003evignetting\u003c\/strong\u003e (darkening at the edges of the field of view). This is most apparent when using full-frame imaging sensors or very long focal length, wide-field 2-inch eyepieces that utilize the entire light cone produced by the telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Explore Scientific 3-inch diagonal prevent damaging my eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe included 2-inch adapter uses a \u003cstrong\u003ebrass compression ring\u003c\/strong\u003e to secure eyepieces. When you tighten the lock screw, the ring gently and evenly tightens around the eyepiece barrel. This provides a more secure grip than a single set screw and prevents the screw from digging into and scratching the barrel of your expensive eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging the Andromeda Galaxy (M31) with a full-frame sensor; will this 3-inch diagonal help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Imaging a large target like the Andromeda Galaxy (M31) with a full-frame sensor is exactly the scenario where a 3-inch diagonal is most beneficial. It ensures the entire sensor is evenly illuminated by your telescope's light cone, preventing the vignetting that a smaller 2-inch diagonal would likely cause at the corners of your image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Explore Scientific 3-inch diagonal include an adapter for 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this diagonal comes standard with a \u003cstrong\u003e2-inch adapter only\u003c\/strong\u003e. A separate 2-inch to 1.25-inch adapter would be required to use 1.25-inch eyepieces, though this is not a typical use case for a diagonal of this size.\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e812257014774\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e3-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003e99% Dielectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Adapter\u003c\/td\u003e\n\u003ctd\u003e2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product's \"What's in the Box\" information is currently unavailable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis product's manuals and software are not available for download at this time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967198916893,"sku":"ES-DD03-01CF","price":825.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-99-Reflective-3-inch-Diagonal-DD03-01CF-1__40342.1594240339.1280.1280.jpg?v=1684338701"},{"product_id":"william-optics-2x-barlow-nosepiece-for-binoviewer","title":"William Optics 2x Barlow Nosepiece for Binoviewer","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides 2x magnification\u003c\/li\u003e\n\u003cli\u003eEnables binoviewers to reach focus in most telescopes\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" nosepiece format\u003c\/li\u003e\n\u003cli\u003eThreads directly onto the binoviewer body\u003c\/li\u003e\n\u003cli\u003eSolves insufficient back-focus travel issues\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\u003eWilliam Optics 2x Barlow Nosepiece for Binoviewer\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 2x Barlow Nosepiece for Binoviewer is a purpose-built optical corrector designed to solve the single most common obstacle to two-eyed observing: achieving focus. This 1.25\" nosepiece provides the critical 2x optical amplification required to extend your telescope's focal point, allowing it to meet the long light path of a binoviewer.\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\u003eAchieve Focus at 2x: The Essential Binoviewer Accessory\u003c\/h3\u003e\n\u003cp\u003eMany telescopes, particularly Newtonians and some refractors, lack the necessary inward focuser travel (back focus) to accommodate the long optical path of a binoviewer. This nosepiece acts as a Barlow lens and optical path corrector, pushing the focal plane outward so your focuser can reach it. The result is a sharp, focused image where one was previously impossible, making this accessory essential for using your binoviewer on a wider range of 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\u003eSecure 1.25\" Thread-In Design for Stability\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard Barlow lens that drops into a focuser, the William Optics 2x Barlow Nosepiece threads directly onto the body of the binoviewer itself, replacing the standard 1.25\" nosepiece. This direct, threaded connection creates a solid and secure optical train, eliminating the potential for sag, flexure, or misalignment that can occur when stacking separate components. This ensures your eyepieces and the binoviewer remain perfectly collimated with the telescope's optical axis.\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 do I need a special 2x Barlow Nosepiece for my William Optics binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA binoviewer has a long optical path due to its internal prisms. Most telescopes don't have enough inward focus travel to compensate, meaning you can't achieve a sharp image. The \u003cstrong\u003eWilliam Optics 2x Barlow Nosepiece\u003c\/strong\u003e extends the telescope's focal point outward, allowing your focuser to reach it. It's an essential corrector for enabling binoviewer use on many telescope designs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2x Barlow Nosepiece work with binoviewers from other brands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for William Optics binoviewers, this 2x Barlow may be compatible with other models that use a standard thread for a removable 1.25\" nosepiece. However, compatibility is not guaranteed, as threading and optical path lengths can vary between manufacturers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the William Optics 2x Barlow Nosepiece affect views of Jupiter in my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" SCT already has a long focal length, and this 2x Barlow will double it, providing very high magnification. This is ideal for resolving fine details in Jupiter's cloud bands, the Great Red Spot, and transits of its moons. You will need steady atmospheric seeing conditions to take full advantage of the high power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the 2x Barlow Nosepiece for deep-sky objects like the Hercules Cluster (M13)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but with a trade-off. The 2x magnification will make the background sky darker and can help resolve individual stars in the core of a bright globular cluster like M13. However, it will also significantly narrow your field of view and dim the image, making it less suitable for large, faint objects like nebulae or galaxies.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this William Optics nosepiece thread into the filter threads of my existing nosepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eWilliam Optics 2x Barlow Nosepiece\u003c\/strong\u003e is designed to completely replace your binoviewer's existing 1.25\" nosepiece. You must first unthread and remove the standard nosepiece from the binoviewer body before threading this Barlow nosepiece in its place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the only purpose of the William Optics 2x Barlow Nosepiece to reach focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary purpose is to enable focus, but it also functions as a quality 2x Barlow lens. By doubling your magnification, it allows you to achieve the high powers necessary for detailed lunar and planetary observation, effectively expanding the utility of your eyepiece collection when using the binoviewer.\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\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics 2x Barlow Nosepiece for Binoviewer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification Factor\u003c\/td\u003e\n\u003ctd\u003e2x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003eDirect thread-on to binoviewer body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eBinoviewer In-Focus Corrector\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\"\u003eWilliam Optics 2x Barlow Nosepiece for Binoviewer\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\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967219331357,"sku":"WO-E-BINO-B2","price":81.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-2x-Barlow-Nosepiece-for-Binoviewer-E-BINO-B2-1__77251.1596133233.1280.1280.jpg?v=1684339279"},{"product_id":"william-optics-binoviewer-complete-package","title":"William Optics Binoviewer Complete Package","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIncludes two 20mm 66° wide-angle eyepieces\u003c\/li\u003e\n\u003cli\u003eHigh-quality BaK4 prisms with full multi-coatings\u003c\/li\u003e\n\u003cli\u003eLarge 20mm clear prism aperture prevents vignetting\u003c\/li\u003e\n\u003cli\u003eIncludes 1.6x Barlow nosepiece to ensure focus with most telescopes\u003c\/li\u003e\n\u003cli\u003eIndividual helical eyepiece focusing for perfect sharpness\u003c\/li\u003e\n\u003cli\u003eAccepts standard 1.25\" astronomy eyepieces\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\u003eWilliam Optics Binoviewer Complete Package\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Binoviewer package transforms solo eyepiece viewing into an immersive, two-eyed experience, delivering a matched pair of 20mm wide-angle 66° eyepieces for immediate use. Its optical path is built around high-grade BaK4 prisms with a 20mm clear aperture to maximize brightness and eliminate vignetting. This complete set includes a 1.6x Barlow nosepiece, which extends your telescope's focal point to ensure the binoviewer can reach focus in nearly any instrument, from Schmidt-Cassegrains to Newtonians.\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\u003e20mm BaK4 Prisms: Bright, High-Contrast Binocular Views\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the William Optics Binoviewer are oversized, fully multi-coated BaK4 prisms. The 20mm clear aperture is critical for passing the full light cone from your telescope to both eyes without clipping the edges of the field, a common issue in binoviewers with smaller prisms. This design preserves the brightness and contrast of your telescope, delivering views that are rich in detail and free of false color.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaK4 Glass:\u003c\/strong\u003e Provides higher refractive index and minimizes internal reflections for a cleaner, higher-contrast image compared to lower-grade prism glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Multi-Coated Optics:\u003c\/strong\u003e Every air-to-glass surface is coated to maximize light transmission, ensuring the view remains bright even after splitting the light path between two eyes.\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 Mechanics: Individual Focus and Brass Compression Rings\u003c\/h3\u003e\n\u003cp\u003eBuilt for durability and ease of use, the binoviewer body features a white powder-coated finish and large, chromed thumbscrews for easy handling with gloves. Each eyepiece holder incorporates an independent helical focuser, allowing you to precisely compensate for differences between your eyes to achieve a perfectly merged, sharp image. The 1.25\" holders use non-marring brass compression rings to securely grip your eyepieces without scratching the barrels.\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 Complete 66° Viewing System with a 1.6x Barlow\u003c\/h3\u003e\n\u003cp\u003eThis is not just a binoviewer body; it's a complete observing system. William Optics includes a matched pair of 20mm wide-angle eyepieces with a 66° apparent field of view, providing an ideal starting point for lunar, planetary, and deep-sky observation. The critical component for many users is the included 1.6x Barlow nosepiece. Most telescopes, especially Newtonians, lack the back focus required for a binoviewer; this Barlow extends the focal plane outward, guaranteeing you can achieve a sharp image without modifying your telescope.\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 included 1.6x Barlow with the William Optics Binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1.6x Barlow\u003c\/strong\u003e is essential for reaching focus in telescopes with limited back focus, such as most Newtonian reflectors and some refractors. Binoviewers require a long light path, and this Barlow pushes the telescope's focal point outward to meet that requirement. It also provides a moderate increase in magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my own 1.25\" eyepieces with the William Optics Binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The William Optics Binoviewer is compatible with most standard 1.25\" eyepieces. For best results, you should use two identical eyepieces (a matched pair) to ensure a perfectly merged and comfortable view. The brass compression rings will hold them securely without damaging their barrels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need individual eyepiece focus on the WO Binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIndividual focus adjustment allows you to compensate for differences in vision between your left and right eyes (diopter correction). By focusing each eyepiece separately, you can achieve a single, perfectly sharp image that is comfortable to view for extended periods, reducing eye strain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the William Optics Binoviewer perform on the Moon and Jupiter with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" SCT is an excellent match for this binoviewer. The two-eyed view adds a remarkable sense of depth and dimensionality to lunar craters and mountain ranges. On Jupiter, you'll find it easier to perceive subtle details in the cloud bands and spot the Galilean moons. The included 20mm eyepieces and 1.6x Barlow will provide a high-contrast, comfortable view of both targets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the William Optics Binoviewer reach focus in my 10\" Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, most likely. Most commercial Dobsonian (Newtonian) telescopes do not have enough inward focuser travel to reach focus with a binoviewer alone. However, this package includes the \u003cstrong\u003e1.6x Barlow nosepiece\u003c\/strong\u003e specifically to solve this problem. By inserting the Barlow, you will almost certainly be able to achieve focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the included 20mm eyepieces good for deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The 20mm eyepieces provide a moderately low power and a wide 66° field of view, making them excellent for framing larger deep-sky objects like the Orion Nebula (M42), the Andromeda Galaxy (M31), or open clusters like the Pleiades (M45). The binocular view can make these objects appear more three-dimensional against the background sky.\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\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003eBaK4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Clear Aperture\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Compatibility\u003c\/td\u003e\n\u003ctd\u003e1.25\" Barrels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holders\u003c\/td\u003e\n\u003ctd\u003eBrass Compression Rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocusing\u003c\/td\u003e\n\u003ctd\u003eIndividual Helical Diopter Adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Eyepieces\u003c\/td\u003e\n\u003ctd\u003e2x 20mm Wide Angle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Apparent Field\u003c\/td\u003e\n\u003ctd\u003e66°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Barlow\u003c\/td\u003e\n\u003ctd\u003e1.6x Magnification Nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eWhite Powder Coat\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\"\u003eWilliam Optics Binoviewer Body\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 WA 66° Eyepieces\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\"\u003e1.6x Barlow Nosepiece\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 Caps\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\"\u003ePresentation Gift Box\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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967219364125,"sku":"WO-E-BINO-P","price":509.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-Binoviewer-Complete-Package-E-BINO-P-1__33057.1596133235.1280.1280.jpg?v=1684339281"},{"product_id":"william-optics-99-dielectric-dura-bright-diagonal-1-25","title":"William Optics 99% Dielectric Dura Bright Diagonal - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e1.25\" Barrel Diameter\u003c\/li\u003e\n\u003cli\u003e99% Dielectric Coated Mirror\u003c\/li\u003e\n\u003cli\u003e1\/12λ Mirror Surface Accuracy\u003c\/li\u003e\n\u003cli\u003e12mm Thick Mirror Substrate\u003c\/li\u003e\n\u003cli\u003e100% Real Carbon Fiber Side Plates\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\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\u003eWilliam Optics 99% Dielectric Dura Bright Diagonal - 1.25\"\u003c\/h2\u003e\n      \u003cp\u003eThe William Optics 1.25\" Dura-Bright Diagonal delivers maximum image brightness and contrast through its 99% reflective dielectric coatings and a precision 1\/12λ mirror. Built on a thermally stable 12mm thick substrate and housed in a patented, permanently aligned chassis with 100% real carbon fiber plates, this diagonal ensures your telescope's optical path remains perfect from the first day of use.\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 1\/12λ Mirror: 99% Reflectivity for Maximum Contrast\u003c\/h3\u003e\n      \u003cp\u003eA star diagonal is a critical element in the optical chain, and the Dura-Bright is built around a laboratory-grade mirror. The 12mm thick substrate provides exceptional thermal and mechanical stability, while the surface is polished to a 1\/12λ wave accuracy, preserving the sharpness produced by your telescope's objective. Dielectric coatings provide 99% reflectivity, noticeably brightening the image and increasing contrast on faint deep-sky targets and subtle planetary details like the cloud bands of Jupiter.\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\u003ePatented Design: 100% Carbon Fiber and Permanent Alignment\u003c\/h3\u003e\n      \u003cp\u003eWilliam Optics rejects the idea that a diagonal should ever need user adjustment. Where competing designs use collimation screws—an admission of potential mechanical flexure—the Dura-Bright employs a patented, fixed housing that guarantees perfect alignment for life. The 100% real carbon fiber side plates provide extreme rigidity and a touch of class, while internal baffles eliminate stray light for blacker backgrounds.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCompression Rings:\u003c\/strong\u003e Both the 1.25\" eyepiece holder and adapter use brass compression rings to securely grip your eyepieces without marring their barrels.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eGlove-Friendly Screws:\u003c\/strong\u003e Large, knurled thumbscrews are easy to operate even on cold nights while wearing gloves.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eInternal Safety Stop:\u003c\/strong\u003e A machined stop prevents long 1.25\" eyepiece barrels from ever making contact with the diagonal's mirror surface.\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\u003eDura-Bright vs. Standard Diagonals: A 5% Gain in Reflectivity\u003c\/h3\u003e\n      \u003cp\u003eCompared to standard aluminum or silver diagonals that typically offer 90-94% reflectivity, the Dura-Bright's 99% dielectric mirror transmits significantly more light to your eye. This 5% or greater increase in light throughput makes a visible difference when observing at the limits of your telescope, rendering faint galaxies brighter and globular clusters more resolved. The dielectric coatings are also far more durable than standard coatings, ensuring this brightness advantage does not degrade over years of use and cleaning.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the William Optics Dura-Bright Diagonal's 99% reflectivity?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003e99% reflectivity\u003c\/strong\u003e from the dielectric coatings ensures the maximum amount of light from your telescope reaches the eyepiece. This results in brighter images and higher contrast compared to standard diagonals (which are often 90-94% reflective), making faint objects easier to see and planetary details more distinct.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 1.25\" Dura-Bright Diagonal improve my views of Jupiter and Saturn?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The combination of high reflectivity and the \u003cstrong\u003e1\/12λ mirror surface\u003c\/strong\u003e preserves the finest details your telescope can resolve. This allows for sharper views of Jupiter’s Great Red Spot, subtle cloud bands, and the Cassini Division in Saturn’s rings, especially when compared to a lower-quality stock diagonal.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy doesn't the William Optics Dura-Bright Diagonal have collimation screws?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWilliam Optics considers adjustable alignment systems a sign of poor mechanical design. The Dura-Bright uses a \u003cstrong\u003epatented, rigid, non-adjustable housing\u003c\/strong\u003e to guarantee perfect alignment from the factory that will not shift over time. This ensures consistent, optimal performance without the need for user adjustment.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the carbon fiber on the Dura-Bright Diagonal just for aesthetics?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile the \u003cstrong\u003e100% real carbon fiber\u003c\/strong\u003e side plates are visually striking, their primary purpose is structural. Carbon fiber is exceptionally strong, rigid, and lightweight, contributing to the diagonal's robust, permanently aligned construction.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use filters with the William Optics 1.25\" Dura-Bright Diagonal?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYou attach standard \u003cstrong\u003e1.25\" threaded filters\u003c\/strong\u003e directly to the barrel of your 1.25\" eyepieces before inserting them into the diagonal. The diagonal itself does not have filter threads.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Dura-Bright Diagonal perform for splitting double stars like Albireo in my 80mm refractor?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFor a task like splitting the colorful components of Albireo (Beta Cygni), the Dura-Bright excels. Its high-precision \u003cstrong\u003e1\/12λ mirror\u003c\/strong\u003e prevents any degradation of the star's Airy disk, ensuring the tightest possible stars. The high light transmission also helps maintain the brightness and rich color contrast of the binary pair in a smaller 80mm aperture.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003ctable class=\"DAV-specifications\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDiagonal Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003e99%\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMirror Coatings\u003c\/td\u003e\n\u003ctd\u003eDielectric\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMirror Surface Accuracy\u003c\/td\u003e\n\u003ctd\u003e1\/12λ\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMirror Thickness\u003c\/td\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSide Plate Material\u003c\/td\u003e\n\u003ctd\u003e100% Real Carbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAlignment\u003c\/td\u003e\n\u003ctd\u003ePatented Non-Adjustable Design\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\u003eBaffling\u003c\/td\u003e\n\u003ctd\u003eInternal Anti-Reflection Baffling\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSafety Feature\u003c\/td\u003e\n\u003ctd\u003eInternal Stop for Eyepiece Barrels\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/li\u003e\n\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\"\u003e1.25\" Dura Bright Dielectric Diagonal\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\"\u003eDust Caps\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967224181021,"sku":"WO-D-125D-C-DB","price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Dura-Bright-Dielectric-Diagonal-1-25-inch-D-125D-C-DB-1__99095.1596133245.1280.1280.jpg?v=1684339363"},{"product_id":"william-optics-99-dielectric-dura-bright-diagonal-2","title":"William Optics 99% Dielectric Dura Bright Diagonal - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2\" Barrel with 90° Viewing Angle\u003c\/li\u003e\n\u003cli\u003e99% Reflectivity Dielectric Coatings\u003c\/li\u003e\n\u003cli\u003e1\/12th Wave Precision Polished Mirror\u003c\/li\u003e\n\u003cli\u003e12mm Thick Mirror Substrate for Thermal Stability\u003c\/li\u003e\n\u003cli\u003e100% Real Carbon Fiber Side Plates\u003c\/li\u003e\n\u003cli\u003eIncludes 2\" to 1.25\" Adapter with Compression Ring\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\u003eWilliam Optics 99% Dielectric Dura Bright Diagonal - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 2\" Dura-Bright Diagonal is built around a 12mm thick, 1\/12th wave mirror substrate with 99% reflective dielectric coatings, delivering maximum light transmission for critical observations. Its 90° mirror design is housed in a precision-machined body featuring 100% real carbon fiber side plates, and it includes a 2\" to 1.25\" adapter to accommodate your entire eyepiece collection.\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\u003e99% Reflectivity from a 1\/12th Wave Dielectric Mirror\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the Dura-Bright is a mirror polished to a 1\/12th wave accuracy, ensuring that the image remains free of optical errors. This precision flat is supported by a 12mm thick substrate for excellent thermal stability, preventing image shift during temperature changes. The mirror's dielectric coatings achieve 99% reflectivity, providing noticeably brighter images and higher contrast when observing fine details on Jupiter's cloud bands or splitting close binary stars.\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\u003eCarbon Fiber Build with Non-Marring Compression Rings\u003c\/h3\u003e\n\u003cp\u003eThe diagonal's body is distinguished by 100% real carbon fiber side plates, reducing weight and adding structural rigidity. Both the 2\" diagonal barrel and the included 1.25\" adapter use brass compression rings, which secure your eyepieces firmly without scratching or marring their barrels. Internally, anti-reflection baffling eliminates stray light, while a safety stop prevents 2\" eyepiece barrels from ever contacting the mirror 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\u003ePatented Design: Permanently Aligned for Life\u003c\/h3\u003e\n\u003cp\u003eUnlike diagonals that require periodic adjustment, the William Optics Dura-Bright is engineered to hold its collimation permanently. A non-adjustable design is a testament to its mechanical integrity; the diagonal is CNC-machined from a solid block of aluminum to guarantee its optical axis remains perfectly aligned from the first day of use. This robust construction ensures your telescope's optical train remains precise, session after session.\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 advantage of the William Optics Dura-Bright's 99% dielectric coating?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e99% dielectric coating\u003c\/strong\u003e ensures that virtually all light gathered by your telescope reaches your eyepiece. This results in brighter, higher-contrast images compared to standard aluminum or silver coatings, which is especially critical for observing faint planetary details, deep-sky objects, and the subtle color differences in stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy doesn't the William Optics Dura-Bright diagonal have collimation screws?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe absence of collimation screws is a design feature, not a limitation. William Optics builds the Dura-Bright diagonal with such high mechanical precision that it is guaranteed to hold its alignment permanently. Diagonals that offer adjustments often do so because their construction is less robust and can shift over time; the Dura-Bright's patented, solid design eliminates this possibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Dura-Bright diagonal scratch my eyepiece barrels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Both the main 2\" holder and the included 1.25\" adapter use \u003cstrong\u003ebrass compression rings\u003c\/strong\u003e. Unlike simple lock screws that dig into the eyepiece barrel, a compression ring provides a secure, even grip around the entire barrel, preventing any cosmetic damage or marring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 12mm thick mirror in the Dura-Bright help when observing Jupiter with my FLT-132?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e12mm thick mirror substrate\u003c\/strong\u003e provides superior thermal stability. When observing an object like Jupiter for an extended period, especially as your telescope adjusts to ambient temperature, a thinner mirror could slightly deform and soften the image. The Dura-Bright's thick mirror resists these changes, ensuring your view of the Great Red Spot and its cloud bands remains sharp and stable all night.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 1.25\" eyepieces with the 2\" William Optics Dura-Bright diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The diagonal comes with a high-quality \u003cstrong\u003e2\" to 1.25\" adapter\u003c\/strong\u003e. This adapter also features a compression ring, so your 1.25\" eyepieces are held just as securely and safely as your 2\" eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Dura-Bright a good choice for splitting close double stars like Epsilon Lyrae with a GT102?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it's an excellent choice. Splitting tight doubles like the \"Double Double\" Epsilon Lyrae requires maximum image contrast and sharpness. The Dura-Bright's \u003cstrong\u003e1\/12th wave mirror\u003c\/strong\u003e and \u003cstrong\u003e99% reflectivity coatings\u003c\/strong\u003e preserve the delicate Airy disk and diffraction rings of the stars, making it easier to achieve a clean separation at high magnification with a high-end refractor like the GT102.\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\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Type\u003c\/td\u003e\n\u003ctd\u003eDura-Bright Dielectric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflectivity\u003c\/td\u003e\n\u003ctd\u003e99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Substrate Thickness\u003c\/td\u003e\n\u003ctd\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMirror Flatness\u003c\/td\u003e\n\u003ctd\u003e1\/12th wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSide Plate Material\u003c\/td\u003e\n\u003ctd\u003e100% Real Carbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping Mechanism\u003c\/td\u003e\n\u003ctd\u003eBrass Compression Rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaffling\u003c\/td\u003e\n\u003ctd\u003eInternal Anti-Reflection Baffling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Feature\u003c\/td\u003e\n\u003ctd\u003eInternal Barrel Stop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Included\u003c\/td\u003e\n\u003ctd\u003e2\" to 1.25\" with Compression Ring\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\"\u003eWilliam Optics 2\" 99% Dielectric Dura Bright Diagonal\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\" to 1.25\" Eyepiece 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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967224213789,"sku":"WO-D-DIG2D-C-DB","price":228.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-2-inch-Durabright-CF-Plate-D-DIG2D-C-DB-T-1__49229.1642255347.1280.1280.jpg?v=1684339370"},{"product_id":"william-optics-45-erecting-prism-1-25","title":"William Optics 45° Erecting Prism - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a fully corrected image (upright and left-right correct)\u003c\/li\u003e\n\u003cli\u003eComfortable 45° viewing angle for terrestrial observation\u003c\/li\u003e\n\u003cli\u003eFits standard 1.25\" focusers and accepts 1.25\" eyepieces\u003c\/li\u003e\n\u003cli\u003eHigh-quality BAK7 prism with anti-reflection coatings\u003c\/li\u003e\n\u003cli\u003eFeatures a non-marring brass compression ring to protect eyepieces\u003c\/li\u003e\n\u003cli\u003eDurable, internally baffled black-anodized aluminum body\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\u003eWilliam Optics 45° Erecting Prism - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 45° Erecting Prism transforms any astronomical telescope with a 1.25\" focuser into a powerful terrestrial scope for daytime viewing. It reorients the standard inverted and reversed image, delivering a view that is fully upright and corrected left-to-right, just as your eyes see it naturally. With its high-quality BAK7 prism and anti-reflection coatings, this diagonal provides the bright, high-contrast images necessary for birdwatching, landscape viewing, or maritime 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\u003eFrom Astronomical to Terrestrial: A Fully Corrected 1.25\" View\u003c\/h3\u003e\n\u003cp\u003eA standard telescope view is upside-down and backwards, which is disorienting for observing anything on Earth. This 1.25\" erecting prism solves that problem completely. It provides a \"correct-image\" orientation, making it intuitive to follow moving targets like birds in flight or boats on the water.\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\u003eBAK7 Prism Optics: Bright, High-Contrast Daytime Images\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is a large, high-quality BAK7 prism. Paired with anti-reflection coatings, it maximizes light throughput for exceptionally bright views. To ensure high contrast and prevent washed-out images, the interior of the aluminum housing is fully blackened and baffled to eliminate stray light reflections before they reach your eyepiece.\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 by Design: Anodized Aluminum and a Brass Compression Ring\u003c\/h3\u003e\n\u003cp\u003eThe William Optics erecting prism is built for durability and ease of use. The body is machined from black-anodized aluminum, and the 1.25\" eyepiece holder features a non-marring brass compression ring. This design ensures your eyepiece barrels are held securely without the scratches and gouges caused by single-thumbscrew systems. Large, chromed thumbscrews make it easy to secure your eyepieces, even when wearing gloves.\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\u003e45° vs. 90° Diagonals: Choosing the Right Tool for the Job\u003c\/h3\u003e\n\u003cp\u003eWhile a standard 90° star diagonal is ideal for astronomy, its image is still reversed left-to-right. This 45° erecting prism provides a fully correct image, making it superior for terrestrial use. The 45° angle is also more comfortable for viewing subjects on or near the horizon, whereas a 90° angle becomes awkward. For daytime use, the 45° erecting prism is the correct choice; for nighttime astronomical viewing, a 90° star diagonal remains the standard.\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 do I need the William Optics 45° Erecting Prism for daytime viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAstronomical telescopes naturally produce an image that is upside-down and backward. While this doesn't matter for stars, it makes viewing terrestrial objects impossible to follow. The \u003cstrong\u003eWilliam Optics 45° Erecting Prism\u003c\/strong\u003e corrects the image to be both upright and normal left-to-right, making your telescope function like a high-power spotting scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this William Optics prism work with my Schmidt-Cassegrain or reflector telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis prism is primarily designed for refractors and Maksutov-Cassegrain telescopes. While it will fit in the 1.25\" focuser of a Schmidt-Cassegrain (SCT) or Newtonian reflector, you may not have enough focuser travel to reach a sharp image. Refractors are generally the best match for this type of diagonal.\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 45° erecting prism and a standard 90° star diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThere are two key differences:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Orientation:\u003c\/strong\u003e A 90° star diagonal corrects the up\/down orientation but leaves the image mirrored left-to-right. This 45° prism corrects \u003cstrong\u003eboth\u003c\/strong\u003e axes, providing a fully correct image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eViewing Angle:\u003c\/strong\u003e The 45° angle is more comfortable for looking at objects on the horizon. The 90° angle is better for looking high into the night sky.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the brass compression ring on the WO-D-EP125 do?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003ebrass compression ring\u003c\/strong\u003e is a soft metal ring inside the eyepiece holder that tightens evenly around your eyepiece barrel when you turn the thumbscrew. This provides a secure, centered grip without scratching or marring the eyepiece barrel, unlike a simple set screw that digs into one point.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the William Optics 45° prism for birdwatching with my 80mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. An 80mm refractor paired with this erecting prism makes an excellent, high-magnification setup for birdwatching. The fully corrected image allows you to easily track birds, and the optical quality of the BAK7 prism ensures you'll see fine feather detail with bright, clear views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this prism affect focusing on my telescope when viewing ships from my balcony?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, all diagonals change the focus point of a telescope. The William Optics 45° prism will require you to move the focuser \"out\" (away from the telescope tube) to reach focus compared to viewing without a diagonal. Most refractors have ample focuser travel to accommodate this without any issue.\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\u003eDiagonal Type\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e45°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eFully Corrected (Upright \u0026amp; Left-Right Correct)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Material\u003c\/td\u003e\n\u003ctd\u003eBAK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Coatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Construction\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior\u003c\/td\u003e\n\u003ctd\u003eBaffled and Blackened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Holder\u003c\/td\u003e\n\u003ctd\u003e1.25\" with Brass Compression Ring\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\"\u003eWilliam Optics 45° Erecting Prism - 1.25\"\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\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967224246557,"sku":"WO-D-EP125","price":152.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-45-degree-Erecting-Prism-1-25-inch-D-EP125-1__94579.1596133249.1280.1280.jpg?v=1684339395"},{"product_id":"william-optics-redcat-erecting-prism-1-25-silver-version","title":"William Optics RedCat WIFD Erecting Prism - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConverts Astronomical Telescopes for Terrestrial Viewing\u003c\/li\u003e\n\u003cli\u003e90-Degree Viewing Angle\u003c\/li\u003e\n\u003cli\u003eAccepts Standard 1.25\" Eyepieces\u003c\/li\u003e\n\u003cli\u003eAnti-Reflection Coated BAK7 Prism\u003c\/li\u003e\n\u003cli\u003eCNC-Machined 6061T Aluminum Housing\u003c\/li\u003e\n\u003cli\u003eInternally Baffled and Matte Blackened to Maximize Contrast\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\u003eWilliam Optics RedCat WIFD Erecting Prism - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe William Optics RedCat WIFD Erecting Prism transforms your astronomical telescope into a powerful daytime spotting scope with its 90-degree, correct-image light path. Designed to fit any standard 1.25-inch focuser, this prism uses an anti-reflection coated BAK7 prism to deliver bright, sharp, and correctly oriented views, making it ideal for terrestrial 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\u003eCorrect-Image Daytime Viewing with a 90-Degree BAK7 Prism\u003c\/h3\u003e\n\u003cp\u003eAn astronomical telescope naturally produces an inverted or mirror-reversed image, which is disorienting for terrestrial subjects. This 90-degree erecting prism corrects the image orientation both vertically and horizontally, allowing you to view ships on the horizon, wildlife, or distant landscapes as you would with your own eyes. The internal BAK7 prism is anti-reflection coated to ensure high light transmission for a clear and vibrant 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\u003eCNC-Machined 6061T Aluminum Construction\u003c\/h3\u003e\n\u003cp\u003eReflecting William Optics' commitment to quality, the entire prism housing is precision CNC-machined from a solid block of 6061T aluminum. The interior is matte blackened and threaded to absorb stray light, preventing internal reflections from reducing image contrast. Finished in the distinctive William Optics red anodizing, this erecting prism is built to provide durable, high-fidelity performance that perfectly complements the RedCat 51 WIFD and other premium refractors.\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 the William Optics 1.25\" Erecting Prism do for my RedCat 51?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis prism converts your RedCat 51, or any telescope with a 1.25\" focuser, into a terrestrial spotting scope. It corrects the inverted and reversed image produced by the telescope, providing a view that is correctly oriented for daytime activities like birdwatching, nature observation, or surveillance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this William Optics prism for astronomy at night?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can use it for casual stargazing, an erecting prism is not ideal for critical astronomical observation. The complex light path required to correct the image can introduce minor aberrations and light loss compared to a high-quality mirror or Amici prism star diagonal. For the best possible astronomical views, a dedicated star diagonal is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will this 90-degree prism help with birdwatching using my RedCat 51 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor birdwatching, having a correctly oriented image is essential for tracking moving subjects. This 90-degree prism ensures that when you move the telescope up, the view moves up, and when you move it left, the view moves left. This intuitive control allows you to follow birds in flight or locate them in dense foliage much more easily than with an astronomical diagonal.\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 erecting prism and a standard star diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard \u003cstrong\u003estar diagonal\u003c\/strong\u003e corrects the image vertically but leaves it mirror-reversed (left-to-right). This is acceptable for astronomy but confusing for terrestrial viewing. An \u003cstrong\u003eerecting prism\u003c\/strong\u003e, like this one, corrects the image on both axes, providing a fully correct, daytime-friendly view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI want to use my William Optics RedCat 51 for plane spotting. Is this the right accessory?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent accessory for plane spotting. The fully corrected image allows you to track aircraft across the sky intuitively, and the 90-degree angle provides a comfortable viewing position when the telescope is pointed at high altitudes. The high-contrast optics will help you resolve details and airline liveries clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the William Optics Erecting Prism compatible with non-William Optics telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This erecting prism uses a standard 1.25\" barrel, making it compatible with any telescope that accepts 1.25\" eyepieces and diagonals. You will just need to ensure your focuser has enough travel to reach focus with the prism in the optical train.\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\u003eType\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e90-Degree\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Material\u003c\/td\u003e\n\u003ctd\u003eBAK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eCNC-Machined 6061T Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eRed Anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior\u003c\/td\u003e\n\u003ctd\u003eMatte Blackened \u0026amp; Threaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eDaytime Terrestrial Observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eDesigned for RedCat 51 WIFD, compatible with all 1.25\" focusers\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\"\u003eWilliam Optics RedCat WIFD Erecting Prism - 1.25\"\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\" Dust Cap\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\"\u003eEyepiece Dust Cap\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967224443165,"sku":"WO-D-EP90-125-RC51III","price":219.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-RedCat-Erecting-Prism-1-25-inch-Silver-Version-D-EP90-125-RC51-SL-1__00946.1596133250.1280.1280.jpg?v=1684339157"},{"product_id":"william-optics-90-erect-prism-1-25","title":"William Optics 90° Erect Prism - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a fully corrected, upright, and non-reversed image\u003c\/li\u003e\n\u003cli\u003eDesigned for 1.25\" focusers and eyepieces\u003c\/li\u003e\n\u003cli\u003e90° viewing angle for comfortable observing\u003c\/li\u003e\n\u003cli\u003eIntegrated helical focuser for fine adjustments\u003c\/li\u003e\n\u003cli\u003eThreaded to accept standard 1.25\" 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\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\u003eWilliam Optics 90° Erect Prism - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 90° Erect Prism corrects the image orientation in any 1.25\" focuser, making your astronomical refractor a superb terrestrial telescope. This BAK7 prism design provides an upright, non-reversed view at a comfortable 90° angle, a critical feature for daytime observation that standard mirror diagonals cannot offer.\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 90° Erecting Prism for Correct-Image Views\u003c\/h3\u003e\n\u003cp\u003eA standard astronomical telescope inverts the image. This William Optics diagonal uses a high-accuracy BAK7 erecting prism to flip the image both vertically and horizontally, producing a view that matches what you see with your naked eye. This is essential for birdwatching, landscape viewing, or any terrestrial application where a true-to-life orientation is required.\u003c\/p\u003e\n\u003cp\u003eThe prism features anti-reflection coatings to maximize light transmission, while the interior of the housing is matte blackened to eliminate stray light reflections. The result is a high-contrast image that makes this diagonal a perfect match for premium refractors.\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\u003eHelical Focuser and 1.25\" Filter Threads\u003c\/h3\u003e\n\u003cp\u003eA key feature of this diagonal is the integrated helical focuser on the eyepiece holder. This mechanism allows for fine, precise focus adjustments without touching your telescope's main focuser, which is ideal for achieving critical sharpness at high magnification or for matching focus between different eyepieces.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e The body is machined from black anodized aluminum, ensuring a rigid and durable connection in your optical train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter Compatibility:\u003c\/strong\u003e The 1.25\" nosepiece is threaded to accept standard 1.25\" filters, allowing you to easily add a moon filter or color filter for planetary viewing.\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\u003eWilliam Optics Erecting Prism vs. Standard Mirror Diagonals\u003c\/h3\u003e\n\u003cp\u003eFor astronomical use, a high-end dielectric mirror diagonal may offer marginally higher light transmission, making it preferable for imaging faint deep-sky objects. However, a mirror diagonal only corrects the up-down axis, leaving the image reversed left-to-right.\u003c\/p\u003e\n\u003cp\u003eFor any application where image orientation matters, the erecting prism is the superior tool. Whether you're tracking a ship on the horizon or using your telescope for public outreach, the William Optics 90° Erect Prism delivers an intuitive, correctly oriented view that mirrors reality.\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 do I need the William Optics 90° Erect Prism for daytime viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eStandard astronomical diagonals produce an image that is either upside-down or mirrored left-to-right. The \u003cstrong\u003eWilliam Optics 90° Erect Prism\u003c\/strong\u003e corrects the image on both axes, giving you a fully upright and non-reversed view, just like a pair of binoculars. This is essential for terrestrial applications like birdwatching or landscape observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the helical focuser on the William Optics Erect Prism work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe top barrel of the diagonal, where you insert the eyepiece, can be rotated. This rotation moves the eyepiece up and down with very fine precision, allowing you to make small, critical focus adjustments. It's especially useful for fine-tuning focus at high power or when swapping eyepieces that are not perfectly parfocal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the William Optics 1.25\" Erect Prism work with my Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this prism diagonal will work perfectly with any Schmidt-Cassegrain (SCT), Maksutov-Cassegrain, or refractor that uses a 1.25\" visual back or focuser. It provides a comfortable 90° viewing angle and a correctly oriented image, making it a versatile accessory for any compatible telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 1.25\" filters like a moon filter with this William Optics prism?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The 1.25\" nosepiece that inserts into the telescope's focuser is threaded to accept all standard 1.25\" filters. You can easily attach a moon filter, planetary color filters, or a light pollution filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the difference between this William Optics Erecting Prism and a mirror diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn \u003cstrong\u003eErecting Prism\u003c\/strong\u003e provides a fully corrected image (upright and not reversed left-to-right), which is ideal for daytime use. A \u003cstrong\u003eMirror Diagonal\u003c\/strong\u003e provides an image that is upright but still reversed left-to-right. While a high-quality mirror may have slightly better light transmission for deep-sky astronomy, the prism is the correct choice for terrestrial viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this prism a good choice for observing planets like Jupiter in my premium refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile this prism will certainly show you planets, a high-quality dielectric mirror diagonal is generally recommended for critical planetary observation. Mirror diagonals tend to have slightly higher light throughput and introduce fewer optical artifacts than a prism, preserving the maximum possible contrast for viewing details like the cloud bands of Jupiter (M42) or the Cassini Division in Saturn's rings.\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\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect (Upright \u0026amp; Non-Reversed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003eBAK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eAnti-Reflection Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003eIntegrated Helical Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eBlack Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Baffling\u003c\/td\u003e\n\u003ctd\u003eMatte Blackened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Threads\u003c\/td\u003e\n\u003ctd\u003eYes (1.25\")\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\"\u003eWilliam Optics 90° Erect Prism - 1.25\"\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/william-optics-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eWilliam Optics 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967224803613,"sku":"WO-D-EP90-125II","price":160.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-90-degree-Erect-Prism-1-25-inch-D-EP90-125II-1__05101.1596133252.1280.1280.jpg?v=1684339397"},{"product_id":"baader-maxbright-ii-binoviewer-set","title":"Baader MaxBright II Binoviewer Set","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eModular design based on the Baader T-2 thread system\u003c\/li\u003e\n\u003cli\u003eOptional Glasspath Correctors provide 1.25x, 1.7x, and 2.6x magnification\u003c\/li\u003e\n\u003cli\u003eAccommodates both 1.25\" and 2\" nosepieces for universal telescope compatibility\u003c\/li\u003e\n\u003cli\u003eEnables comfortable, fatigue-free viewing with both eyes\u003c\/li\u003e\n\u003cli\u003eIncludes T-2 and Zeiss micro-bayonet adapters and a padded carrying case\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 MaxBright II Binoviewer Set\u003c\/h2\u003e\n\u003cp\u003eThe Baader MaxBright II Binoviewer Set adapts to nearly any telescope through its modular system of optional 1.25\" and 2\" nosepieces and native T-2 threads. Available Glasspath Correctors (GPCs) at 1.25x, 1.7x, and 2.6x ensure you can reach focus in refractors, Newtonians, and SCTs while providing multiple magnification steps from a single pair of eyepieces.\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 MaxBright II System: Ergonomics for Two-Eyed Viewing\u003c\/h3\u003e\n\u003cp\u003eViewing celestial objects with both eyes open reduces eye strain, improves comfort during long observing sessions, and can create a more immersive, almost three-dimensional impression on bright targets like the Moon and planets. The MaxBright II is engineered for this experience, featuring click-lock eyepiece holders and smooth diopter adjustment for a perfectly merged image. The binoviewer body is supplied with both T-2 and Zeiss micro-bayonet adapters, ready to integrate into complex visual or imaging trains.\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\u003eReach Focus with 1.25x, 1.7x, \u0026amp; 2.6x Glasspath Correctors\u003c\/h3\u003e\n\u003cp\u003eA binoviewer's prisms add significant length to the light path, which can prevent some telescopes—especially Newtonians—from reaching focus. Baader's Glasspath Correctors (GPCs) are designed to solve this by compensating for the optical path difference. They also act as a high-quality Barlow lens, with available factors of 1.25x, 1.7x, and 2.6x, effectively turning one pair of eyepieces into three different magnifications.\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 Connectivity: 1.25\", 2\", and T-2 System Integration\u003c\/h3\u003e\n\u003cp\u003eThe core of the MaxBright II is its native female T-2 thread, making it the central component in Baader's Astro T-2 System. This allows for direct, secure, and perfectly centered connections to a vast range of accessories. Depending on the set purchased, you can attach a standard 1.25\" nosepiece, a rigid 2\" nosepiece for larger focusers, or thread it directly to other T-2 components like diagonals and filter changers for a completely customized optical 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\u003eBaader MaxBright II vs. Entry-Level Binoviewers\u003c\/h3\u003e\n\u003cp\u003eWhile more affordable binoviewers provide a good introduction to two-eyed astronomy, the MaxBright II is built as a long-term, adaptable system. Here are the key distinctions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Modularity:\u003c\/strong\u003e Entry-level models typically have a fixed 1.25\" nosepiece. The MaxBright II's T-2 thread system allows it to connect to virtually any focuser or accessory, providing a more rigid and versatile connection that can adapt as your equipment changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Correction:\u003c\/strong\u003e The Baader GPCs are engineered specifically for the MaxBright II to correct the optical path with minimal degradation. This is a critical advantage for achieving focus in \"fast\" optical systems like Newtonian reflectors, where entry-level units often struggle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrade-Offs:\u003c\/strong\u003e The MaxBright II system represents a greater initial investment, and like all binoviewers, requires you to purchase two identical eyepieces. It also adds weight and length compared to a single eyepiece, which must be considered for mount balancing.\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 benefit of the Baader MaxBright II over a single eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is \u003cstrong\u003eobserving comfort\u003c\/strong\u003e. Using both eyes reduces strain and fatigue, allowing you to observe for longer periods. Many observers also report a more natural, immersive, or even \"3D-like\" view on bright, detailed objects like the Moon, Jupiter, Saturn, and bright globular clusters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a Glasspath Corrector (GPC) for my Baader MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your telescope. \u003cstrong\u003eNewtonian reflectors\u003c\/strong\u003e almost always require a GPC to reach focus. \u003cstrong\u003eRefractors and Schmidt-Cassegrains (SCTs)\u003c\/strong\u003e often have enough focuser travel to work without one, but a GPC can still be useful for adding magnification options.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the different GPCs (1.25x, 1.7x, 2.6x) for the MaxBright II change my view?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe GPCs act like a Barlow lens, increasing magnification. With one pair of 25mm eyepieces, for example, you can achieve three distinct magnifications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25x GPC:\u003c\/strong\u003e Provides a modest power increase, ideal for wide-field scanning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.7x GPC:\u003c\/strong\u003e A great general-purpose increase for framing most deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.6x GPC:\u003c\/strong\u003e Delivers high magnification suitable for detailed planetary, lunar, and double-star observation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I use the Baader MaxBright II with my 8\" f\/5 Newtonian reflector?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor an 8\" f\/5 Newtonian, you will absolutely need a Glasspath Corrector to reach focus. The \u003cstrong\u003e1.7x GPC\u003c\/strong\u003e is an excellent starting point, as it provides enough inward focus correction for most Newtonians. You will also need a 2\" nosepiece to fit your telescope's focuser. The combination of the MaxBright II, the 1.7x GPC, and a 2\" nosepiece will create a robust setup for your reflector.\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 Baader MaxBright II for viewing Jupiter or the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor high-resolution planetary and lunar viewing with the Baader MaxBright II, you need two identical, high-quality eyepieces. Plössl or Orthoscopic designs in the \u003cstrong\u003e9mm to 15mm\u003c\/strong\u003e range are excellent choices. When combined with the 1.7x or 2.6x GPC, this focal length range will provide the high magnifications needed to resolve cloud bands on Jupiter or fine crater details on the Moon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" eyepieces with the Baader MaxBright II Binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Baader MaxBright II, like nearly all astronomical binoviewers, is designed to accept \u003cstrong\u003e1.25\" eyepieces only\u003c\/strong\u003e. The internal prisms and mechanics do not have a large enough clear aperture to accommodate the wider field stops of 2\" eyepieces.\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 Configurations\u003c\/td\u003e\n\u003ctd\u003eBinoviewer only, Binoviewer w\/ 1.25\" nosepiece, Binoviewer w\/ 2\" nosepiece, Binoviewer w\/ 1:1.25 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:1.7 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:2.65 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:1.25 GPC and 2\" nosepiece, Binoviewer w\/ 1:1.7 GPC and 2\" nosepiece, Binoviewer w\/ 1:2.65 GPC and 2\" nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e1.28 (Binoviewer w\/ 1.25\" nosepiece)\u003cbr\u003e1.32 (Binoviewer w\/ 2\" nosepiece)\u003cbr\u003e1.30 (Binoviewer w\/ 1:1.25 GPC and 1.25\" nosepiece)\u003cbr\u003e1.33 (Binoviewer w\/ 1:1.7 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:2.65 GPC and 1.25\" nosepiece, Binoviewer w\/ 1:1.25 GPC and 2\" nosepiece, Binoviewer w\/ 1:1.7 GPC and 2\" nosepiece, Binoviewer w\/ 1:1.2.65 GPC and 2\" nosepiece)\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_MaxBright_II_Binoviewer_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 MaxBright II Binoviewer 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 Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Binoviewer only","offer_id":46318677655837,"sku":"BAA-2456460","price":698.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1.25\" nosepiece","offer_id":46318677688605,"sku":"BAA-2456460A","price":721.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 2\" nosepiece","offer_id":46318677721373,"sku":"BAA-2456460B","price":727.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.25 GPC and 1.25\" nosepiece","offer_id":46318677754141,"sku":"BAA-2456461","price":845.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.7 GPC and 1.25\" nosepiece","offer_id":46318677786909,"sku":"BAA-2456463","price":852.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:2.65 GPC and 1.25\" nosepiece","offer_id":46318677819677,"sku":"BAA-2456465","price":859.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.25 GPC and 2\" nosepiece","offer_id":46318677852445,"sku":"BAA-2456462","price":845.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.7 GPC and 2\" nosepiece","offer_id":46318677885213,"sku":"BAA-2456464","price":852.0,"currency_code":"CAD","in_stock":true},{"title":"Binoviewer w\/ 1:1.2.65 GPC and 2\" nosepiece","offer_id":46318677917981,"sku":"BAA-2456466","price":859.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-MaxBright-II-Binoviewer-Set-2456460-BINO-1__32027.1597110516.1280.1280.jpg?v=1684339926"},{"product_id":"baader-glasspath-corrector-for-maxbright-bino-and-mark-v","title":"Baader Glasspath Corrector for Maxbright Bino and Mark V","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects for insufficient back focus to allow binoviewer use\u003c\/li\u003e\n\u003cli\u003eAvailable in 1.25x, 1.7x, and 2.6x magnification factors\u003c\/li\u003e\n\u003cli\u003eRemoves prism-induced chromatic and spherical aberrations\u003c\/li\u003e\n\u003cli\u003eAttaches via Baader\/Zeiss ring dovetail or standard T-2 threads\u003c\/li\u003e\n\u003cli\u003eEnables multiple magnifications with a single pair of eyepieces\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 Glasspath Corrector for Maxbright \u0026amp; Mark V Binoviewers\u003c\/h2\u003e\n\u003cp\u003eThe Baader Glasspath Corrector is the essential component for using a binoviewer with telescopes that lack sufficient back focus, offering corrective factors of 1.25x, 1.7x, or 2.6x to push the focal plane outwards. This multi-coated lens system simultaneously eliminates color errors introduced by the binoviewer's prisms, sharpening the view in fast optical systems. Its dual mounting system, featuring a Zeiss dovetail and a T-2 (M42x0.75) thread, ensures seamless integration with Baader Maxbright and Mark V binoviewers.\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\u003eAchieving Focus in Any Telescope with 1.25x, 1.7x, and 2.6x Correction\u003c\/h3\u003e\n\u003cp\u003eThe primary function of a Glasspath Corrector (GPC) is to solve the most common barrier to binoviewing: insufficient focuser in-travel. By extending the telescope's focal length, the GPC moves the focus point significantly outward, allowing you to achieve a sharp image where it was previously impossible. The three available factors—1.25x, 1.7x, and 2.6x—allow you to select the precise amount of correction your specific telescope requires.\u003c\/p\u003e\n\u003cp\u003eA Schmidt-Cassegrain might only need the 1.25x corrector, while a Newtonian reflector with very limited back focus will likely require the 1.7x or 2.6x model. This system also acts as a high-quality Barlow lens, effectively tripling the number of magnifications you can achieve with your existing eyepiece pairs.\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\u003eEliminating Prism-Induced Chromatic Aberration\u003c\/h3\u003e\n\u003cp\u003eBeyond its mechanical function, the Baader GPC provides a critical optical correction. The long path of light through a binoviewer's internal prisms can induce noticeable chromatic aberration (false color) and spherical aberration, especially in telescopes with focal ratios of f\/6 or faster. This softens planetary detail and adds distracting color fringing around bright objects like the lunar limb.\u003c\/p\u003e\n\u003cp\u003eThe Glasspath Corrector's specialized lens design counteracts these errors, restoring the high-contrast, color-pure image delivered by your telescope's main objective. The result is a significantly sharper, more satisfying two-eyed view of the Moon, planets, and double stars.\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 T-2 and Zeiss Dovetail Mounting for Baader Binoviewers\u003c\/h3\u003e\n\u003cp\u003eDesigned for total system compatibility, the GPC features two mounting methods. It can be screwed directly into the Zeiss ring dovetail found on the Baader Mark V and MaxBright II binoviewers for a secure, direct connection. It also includes a T-2 (M42x0.75) clamping flange, allowing it to be inserted anywhere in a T-2 threaded accessory train.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositional Flexibility:\u003c\/strong\u003e Placing the corrector in front of a T-2 star diagonal, rather than between the diagonal and the binoviewer, can reduce the required optical path by an additional 15mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconfigurable Optics:\u003c\/strong\u003e The lens elements can be removed from their cell and reversed to optimize performance between different binoviewer models, ensuring the convex lens surface always faces the telescope objective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e The GPC is engineered to attach directly to Baader T-2 diagonals and various 1.25\" or 2\" nosepieces, creating a rigid and versatile imaging train.\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 Baader Glasspath Corrector factor do I need?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe choice depends entirely on your telescope's available back focus. \u003cstrong\u003e1.25x\u003c\/strong\u003e is for scopes with only a small focus deficit, like many refractors and SCTs. \u003cstrong\u003e1.7x\u003c\/strong\u003e is a versatile mid-range option for many reflectors. \u003cstrong\u003e2.6x\u003c\/strong\u003e provides the most correction and is typically required for Newtonian reflectors that have very little back focus to spare.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Glasspath Corrector work with the Baader Mark V binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. All three correctors are compatible. The 1.25x and 1.7x models may require the internal lens cell to be unscrewed and flipped for optimal correction with the Mark V, while the 2.6x model works natively. The corrector attaches directly to the Mark V's Zeiss ring dovetail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhere should I install the Baader Glasspath Corrector for the best results?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor the greatest reduction in required back focus, the corrector should be placed as far forward in the optical train as possible. Installing it on the front of your T-2 star diagonal, before the light path is bent 90 degrees, can save approximately 15mm of back focus compared to installing it between the diagonal and the binoviewer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy 8\" f\/10 SCT can't reach focus with a MaxBright II binoviewer. Which corrector should I get?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most Schmidt-Cassegrain telescopes, which typically have generous back focus, the \u003cstrong\u003e1.25x Glasspath Corrector\u003c\/strong\u003e is the ideal starting point. It provides enough outward focus travel to solve the problem without increasing magnification unnecessarily, preserving a wider field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI see color fringing on Jupiter with my f\/5 Newtonian and a binoviewer. Will a Glasspath Corrector help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is the second key function of the corrector. The color fringing you see is chromatic aberration introduced by the binoviewer's prisms, which is exaggerated in a \"fast\" f\/5 optical system. The Glasspath Corrector's optics are designed to cancel this specific error, resulting in a much sharper, color-pure image of the planet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Glasspath Corrector for anything besides a binoviewer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Because it uses the standard T-2 thread, you can use a Glasspath Corrector to solve focus issues with other accessories. For example, it can be used to bring a DSLR camera to focus on a telescope that would otherwise not have enough in-travel.\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 Factors\u003c\/td\u003e\n\u003ctd\u003e1.25x, 1.7x, or 2.6x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Function\u003c\/td\u003e\n\u003ctd\u003eExtends focal point to achieve focus with binoviewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Function\u003c\/td\u003e\n\u003ctd\u003eCorrects for prism-induced chromatic and spherical aberration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBinoviewer Threads\u003c\/td\u003e\n\u003ctd\u003eBaader \/ Zeiss M34 Ring Dovetail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Threads\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eMaxBright, MaxBright II, and Mark V Binoviewers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eGlaspath Corrector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible telescopes\u003c\/td\u003e\n\u003ctd\u003eRefractors, Schmidt-Cassegrain, Newton\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e≥ -30 (1:1.25)\u003cbr\u003e-65 (1:1.7)\u003cbr\u003e-120 (1:2.6)\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 Glasspath Corrector\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 (Selected Magnification)\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_Glasspath_Correctors_for_Binoviewers_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 Glasspath Correctors for Binoviewers Product Information\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_Astro_T-2_System_Parts_List.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 Astro T-2 System Parts List\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_Astro_T-2_System_Connections_Overview.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 Astro T-2 System Connections Overview\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_Mark_V_Grossfeld_Giant_Binocular_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 Mark V Grossfeld Giant Binocular 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":"1:1.25","offer_id":44967300038941,"sku":"BAA-2456314","price":178.0,"currency_code":"CAD","in_stock":true},{"title":"1:1.7","offer_id":44967300071709,"sku":"BAA-2456316","price":185.0,"currency_code":"CAD","in_stock":true},{"title":"1:2.6","offer_id":44967300104477,"sku":"BAA-2456317","price":193.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Glasspath-Corrector-for-Maxbright-Bino-and-Mark-V-2456314-GLASS-1-1__03383.1597110520.1280.1280.jpg?v=1684340104"},{"product_id":"baader-maxbright-amici-prism-1-25w-integral-2x-glasspath-corrector","title":"Baader Maxbright Amici Prism 1.25\"w\/ Integral 2X Glasspath Corrector","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a fully corrected, erect image for terrestrial viewing\u003c\/li\u003e\n\u003cli\u003eDesigned for the Baader Maxbright Binoviewer\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" barrel format\u003c\/li\u003e\n\u003cli\u003eIntegrated 2X Glasspath Corrector ensures focus can be reached\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 Maxbright Amici Prism 1.25\" w\/ Integral 2X Glasspath Corrector\u003c\/h2\u003e\n      \u003cp\u003eThe Baader Maxbright Amici Prism is a dedicated optical component designed to solve two common challenges with binoviewing: it provides a fully corrected, daytime-friendly image and its integrated 2X Glasspath Corrector ensures your binoviewer can reach focus in telescopes with limited back-focus. This 1.25\" prism is the ideal solution for turning your astronomical telescope into a high-power terrestrial spotting scope for use with the Maxbright Binoviewer.\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\u003eErect-Image Views with the 1.25\" Amici Design\u003c\/h3\u003e\n      \u003cp\u003eUnlike standard star diagonals which produce an image that is upright but reversed left-to-right, an Amici prism delivers a completely correct orientation. This makes navigating the lunar surface or tracking moving terrestrial targets like birds or ships intuitive. The 1.25\" barrel fits directly into your telescope's focuser, serving as the diagonal for your Maxbright binoviewer setup.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eTerrestrial Viewing:\u003c\/strong\u003e The fully erect image makes the Maxbright Amici Prism essential for daytime observation, transforming your telescope into a powerful binocular spotting scope.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAstronomical Use:\u003c\/strong\u003e While excellent for casual lunar and wide-field stargazing, the roof-edge design of an Amici prism can introduce a faint diffraction spike on the brightest point-sources like Vega or Jupiter. For critical planetary observation, a traditional prism or mirror diagonal is often preferred.\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\u003eThe Integrated 2X GPC for Focus and Magnification\u003c\/h3\u003e\n      \u003cp\u003eMany telescopes, especially Newtonians, do not have enough inward focuser travel to accommodate the long light path of a binoviewer. The integrated 2X Glasspath Corrector (GPC) solves this by extending the telescope's focal plane outwards, pushing the focus point to where the binoviewer's eyepieces can reach it. This component also doubles the effective focal length of your telescope, providing higher magnification views that are ideal for detailed lunar and planetary observation.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the Baader Maxbright Amici Prism?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIts primary purpose is to provide a \u003cstrong\u003efully corrected, erect image\u003c\/strong\u003e (upright and not reversed left-to-right) when using the Baader Maxbright Binoviewer. This is essential for terrestrial, daytime viewing and makes navigating the Moon's surface more intuitive. It also includes an integrated \u003cstrong\u003e2X Glasspath Corrector\u003c\/strong\u003e to help the binoviewer reach focus.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 2X Glasspath Corrector allow my Maxbright Binoviewer to reach focus in my Newtonian telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, this is precisely what the integrated 2X Glasspath Corrector is for. Newtonian reflectors typically have very little back-focus, and a binoviewer alone will not reach focus. The GPC extends the focal plane, making it possible to achieve a sharp image with the Maxbright Binoviewer in most Newtonians.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader Maxbright Amici Prism good for high-power planetary viewing of Jupiter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhile it can be used, it's not the optimal choice for critical planetary viewing. The \"roof\" design of an Amici prism can create a very faint diffraction spike on extremely bright objects like Jupiter, which may slightly soften the finest details. For the highest-contrast planetary views, a dedicated mirror diagonal or a standard prism diagonal (like the Baader T-2 Zeiss Prism) is generally recommended.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Baader Amici Prism without the Maxbright Binoviewer, as a standard diagonal?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, this unit is designed as an integrated system for the Maxbright Binoviewer. The Glasspath Corrector's optical properties are calculated to work with the light path of the binoviewer. Using it with a single eyepiece would result in a 2X Barlow effect, but it is not optimized for that application.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does this Baader prism provide a \"correct\" image?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIt uses an \u003cstrong\u003eAmici roof prism\u003c\/strong\u003e design. Unlike a simple 90-degree prism or mirror that flips the image once, the roof-shaped surface in an Amici prism introduces an additional reflection. This second reflection corrects the left-right reversal, resulting in an image that matches what you see with your naked eye.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the integrated 2X Glasspath Corrector in the Amici Prism affect image brightness?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, any time you increase magnification, you concentrate the same amount of light over a larger area, which makes the resulting image dimmer. The 2X magnification will result in an image that is four times dimmer than the view at 1X. This is a fundamental principle of optics and applies to any Barlow lens or Glasspath Corrector.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003eAmici Roof Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrector Factor\u003c\/td\u003e\n\u003ctd\u003e2X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect, Fully Corrected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eBaader Maxbright Binoviewer\u003c\/td\u003e\n\u003c\/tr\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\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e45°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eMulti-Coated (MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eno clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003evariabel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM28.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eTotal reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\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\"\u003eMaxbright Amici Prism 1.25\" w\/ Integral 2X Glasspath Corrector\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\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_MaxBright_II_Binoviewer_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 MaxBright II Binoviewer 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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\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":44967300170013,"sku":"BAA-2956155","price":139.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Maxbright-Amici-Prism-1-25-inchwith-Integral-2X-Glasspath-Corrector-for-Maxbright-Binoviewer-1__10040.1597110522.1280.1280.jpg?v=1684340109"},{"product_id":"baader-2-newton-1-7x-glasspath-and-coma-corrector","title":"Baader 2\" Newton 1.7X Glasspath and Coma Corrector","description":"\u003c!-- more --\u003e\u003cul\u003e\n\u003cli\u003e2\" Glasspathcorrector\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003eFactor 1.7 for Newtons - at full aperture with integrated Coma-Corrector. Includes T-2 change ring (#2456320) for adaptation on Maxbright Binocular\u003c\/li\u003e\n\u003cli\u003eSuitable to insert into the Baader Maxbright II and Mark V Großfeld Binocular viewer (insert diameter: ∅ 2\" - 50.8mm, incl. M48 filter thread)\u003c\/li\u003e\n\u003cli\u003eA Baader Glasspathcorrector\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003eis not a Barlow lens! The reason for this name is only secondly the displacement of the focal point\u003c\/li\u003e\n\u003cli\u003eA Glasspathcorrector\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003eis primarily intended to correct the prismatic color fringing that occurs on Refractors due to the long glasspath used in binocular prisms\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUntil now, using a binoviewer with Newtonians has been difficult, owing to the limited back-focus (in-travel) of most telescopes (particularly dobsonians). Some binoviewers require up to 5\" of back-focus, far more than available on any typical Newtonian. Often, users must significantly shorten the truss poles or tube, in order to extend the focal plane (penalizing central obstruction, or increasing vignetting). Another solution has been to use a high powered barlow or small diameter 1.25\" optical corrector\/extender lens, which has the drawback of increasing magnification and significantly reducing the field of view illumination. What is needed is a large aperture low power focal-extender to extend the focal plane of a Newtonian, without excessive amplification or introducing new aberrations. Baader Planetarium enlisted the services of the world-renowned Zeiss APQ optical designer, Dr. Pudenz, to design such a difficult corrector specifically for Newtonians. The Baader 1.7X Newtonian Compensator is the result of this collaboration.\u003c\/p\u003e\u003cp\u003eNot just another me-too optical multiplier\/extender, the complex optical design of the new Baader 2\" Newtonian 1.7X Coma-Correcting Glasspath Compensator provides an extremely sharp and high contrast image on-axis, as well as off-axis -thanks, in part, to it's coma-correcting properties. The design also incorporates glasspath compensation for the spherical aberration and color error inherent in binoviewers.\u003c\/p\u003e\u003cp\u003eIt's large clear aperture avoids vignetting, even with the Baader Mark V Giant Binoviewer. The finest 7 layer multi-coatings available provide extremely high transmission optimized for visual use. Carefully designed and executed internal baffling eliminates all off-axis stray light - pointing the corrector to the light reveals a pitch black interior free of reflections from all internal surfaces (also, threaded for 2\" filters). This is especially important in truss tube Newtonians, where off-axis light may enter the corrector from the side. The result is an almost transparent optical system that won't reduce image quality in any way (it actually improves the off-axis performance).\u003c\/p\u003e\u003cp\u003eEach Newtonian compensator corrector comes ready to attach to the Baader Maxbright-Binocular viewer. Simply screw on the included T2-07 Quick Change Ring to the Maxbright, and the Newtonian Compensator quickly attaches via it's integral quick change dovetail. The compensator also attaches directly to the integral dovetail of the 29mm aperture Baader Mark V Giant Binoviewer.\u003c\/p\u003e\u003cp\u003ePlease Note: The Baader 2\" compensator has been designed first, and foremost, for high image quality. While the Newtonian Compensator greatly reduces the needed back-focus, in order to achieve such high image quality, some back-focus is still required. When used with the Baader Mark V binocular viewer, approximately 32-38mm of telescope back-focus (focuser in-travel) is needed. The Baader Maxbright-Binocular Viewer requires approximately 30-36mm of back-focus. This value is approximate, and depends on the specific eyepiece used and any focus correction that is required by the observer's eyesight. This distance is Not adjustable (unlike some bino multiplier\/extenders). Changing the optical spacing (and amplification factor) in order to vary back-focus compromises the optical performance and results in a reduction of image quality. For help in determining your telescope's back-focus, please click on the Back-Focus link.\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967300235549,"sku":"BAA-2456301","price":317.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-2-inch-Newton-1-7X-Glasspath-and-Coma-Corrector-1__04385.1597110522.1280.1280.jpg?v=1684340111"},{"product_id":"baader-2-refractor-sct-1-8x-glasspath-corrector","title":"Baader 2\" Refractor\/SCT 1.8X Glasspath Corrector","description":"\u003c!-- more --\u003e\u003cul\u003e\n\u003cli\u003e2\" Glasspathcorrector\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003eFactor 1.8 for Refractors and Schmidt Cassegrains - at full aperture.\u003c\/li\u003e\n\u003cli\u003eSuitable to insert into the Baader Maxbright and Mark V Großfeld Binocular viewer (insert diameter: ∅ 2\" - 50,.8mm, incl. M48 filter thread)\u003c\/li\u003e\n\u003cli\u003eYou will also need a T-2 diagonal and only for the Mark V Binocular a T-2 change ring (#2456320) to change to 90°. The optical lengths have to be exact so we can only recommend this combination\u003c\/li\u003e\n\u003cli\u003eA Baader Glasspathcorrector\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003eis not a Barlow lens! The reason for this name is only secondarily the displacement of the focal point\u003c\/li\u003e\n\u003cli\u003eA Glasspathcorrector\u003csup\u003e®\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003eis primarily intended to correct the prismatic color fringing that occurs on Refractors due to the \u003cspan\u003elong glasspath used\u003c\/span\u003e used in binocular prisms\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967300268317,"sku":"BAA-2456305","price":322.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-2-inch-Refractor-SCT-1-8X-Glasspath-Corrector-1__38757.1597110523.1280.1280.jpg?v=1684340112"},{"product_id":"baader-auxillary-ring-for-adaptation-of-maxbright-ii","title":"Baader Auxillary-Ring for Adaptation of MaxBright II","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCreates the shortest possible connection for a MaxBright II Binoviewer\u003c\/li\u003e\n\u003cli\u003eDesigned for direct attachment to any Baader T-2 star diagonal\u003c\/li\u003e\n\u003cli\u003ePrevents unintended rotation and accidental detachment of the binoviewer\u003c\/li\u003e\n\u003cli\u003eFunctions as a slip ring to allow for interpupillary distance adjustment\u003c\/li\u003e\n\u003cli\u003eRequires Baader T-2 Locking Ring #2458271 for full functionality (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\u003eBaader Auxillary-Ring for Adaptation of MaxBright II\u003c\/h2\u003e\n\u003cp\u003eThe Baader Auxillary-Ring is a dedicated component engineered to create the most compact, rigid, and secure connection between a MaxBright II Binoviewer and any Baader T-2 star diagonal. This ring system solves the common issues of binoviewer rotation and instability by providing a direct, locked-in attachment that prevents any unintended movement during observation or eyepiece changes.\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, Low-Profile MaxBright II to T-2 Diagonal Adaptation\u003c\/h3\u003e\n\u003cp\u003eThis ring enables the shortest possible adaptation of the MaxBright II directly onto a T-2 prism or mirror diagonal. Its primary function is to act as a slip ring, placed between the binoviewer body and the required T-2 locking ring. This clever design allows you to securely lock the binoviewer's rotational position while still permitting smooth adjustment of the interpupillary distance, ensuring both mechanical stability and user comfort.\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\u003eRequired Component: Baader T-2 Locking Ring (#2458271)\u003c\/h3\u003e\n\u003cp\u003eTo achieve the secure, rotation-proof connection, this Auxillary-Ring must be used in conjunction with the Baader T-2 Locking Ring (#2458271), which is sold separately. The locking ring threads onto the binoviewer's T-2 connection and is tightened against the auxillary ring, creating a firm lock. The locking ring's handle can be repositioned into one of three threaded holes, spaced 120° apart, to ensure it never obstructs your view or access to the eyepieces.\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 Auxillary-Ring for the MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader Auxillary-Ring is designed to provide the shortest and most secure connection possible between a Baader MaxBright II Binoviewer and a Baader T-2 star diagonal. It prevents the binoviewer from rotating or accidentally unscrewing during use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need any other parts to use this Auxillary-Ring with my MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eYes, this part is not standalone.\u003c\/strong\u003e You must use it with the \u003cstrong\u003eBaader T-2 Locking Ring (#2458271)\u003c\/strong\u003e, which is sold separately. The Auxillary-Ring acts as a slip ring, and the Locking Ring provides the tension to lock the binoviewer in place.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this ring system prevent my MaxBright II from rotating on my T-2 diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Auxillary-Ring sits between the binoviewer and the separate locking ring. Once you thread the binoviewer onto your T-2 diagonal, you tighten the locking ring against the Auxillary-Ring. This creates firm pressure that locks the entire assembly, preventing any rotation while still allowing interpupillary distance adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still adjust the interpupillary distance on my MaxBright II with this ring installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Auxillary-Ring is specifically designed to function as a slip ring. This means that even when the connection to the diagonal is locked tight against rotation, the mechanism for adjusting the distance between the eyepieces on the MaxBright II remains fully functional.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader Auxillary-Ring work with non-Baader diagonals?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis ring is specifically designed for the Baader ecosystem, ensuring a perfect fit between the MaxBright II Binoviewer and Baader's T-2 star diagonals (both prism and mirror types). Compatibility with third-party diagonals is not guaranteed, as thread depths and tolerances can vary.\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 Auxillary-Ring system on my MaxBright II and T-2 diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, ensure you have both this Auxillary-Ring and the required Baader T-2 Locking Ring (#2458271).\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove any existing counter nut or dovetail ring from the binoviewer's T-2 thread.\u003c\/li\u003e\n\u003cli\u003eThread the Locking Ring onto the binoviewer's male T-2 thread, but don't tighten it.\u003c\/li\u003e\n\u003cli\u003ePlace the Auxillary-Ring between the Locking Ring and the binoviewer body, with the raised surface facing the binoviewer.\u003c\/li\u003e\n\u003cli\u003eScrew the entire assembly onto your Baader T-2 diagonal until it's snug.\u003c\/li\u003e\n\u003cli\u003eRotate the binoviewer to your desired orientation, then tighten the Locking Ring firmly against the Auxillary-Ring to lock it in place.\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\u003e0.01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eSame-Thread Adapter, Variable Focusing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage\u003c\/td\u003e\n\u003ctd\u003efor Adaptation of MaxBright II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM34\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_MaxBright_II_Binoviewer_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 MaxBright II Binoviewer 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":"Default Title","offer_id":44967300301085,"sku":"BAA-2458272","price":15.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Auxillary-Ring-for-Adaptation-of-MaxBright-II-1__32291.1597110525.1280.1280.jpg?v=1684340114"},{"product_id":"baader-t-2-locking-ring-w-lever-for-maxbright-ii","title":"Baader T-2 Locking Ring w\/ Lever for MaxBright II","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCreates a rigid, direct-thread connection for binoviewers\u003c\/li\u003e\n\u003cli\u003eEnables precise rotational adjustment and locking\u003c\/li\u003e\n\u003cli\u003eFeatures a repositionable lever for ergonomic comfort\u003c\/li\u003e\n\u003cli\u003eHelps shorten the optical path to achieve focus\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the MaxBright II Binoviewer\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 T-2 Locking Ring w\/ Lever for MaxBright II\u003c\/h2\u003e\n\u003cp\u003eThe Baader T-2 Locking Ring with Lever replaces the standard counter nut on a MaxBright II binoviewer, creating a solid, direct-thread connection to your T-2 star diagonal or focuser. This upgrade provides a shorter, more rigid optical train, ideal for achieving focus in demanding systems and ensuring your binoviewer remains securely fixed in any orientation. It is the definitive solution for eliminating flexure and achieving precise rotational alignment.\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\u003eDirect Connection for a Shorter, Rigid Optical Path\u003c\/h3\u003e\n\u003cp\u003eBy screwing your binoviewer directly onto a T-2 star diagonal or compatible focuser, this locking ring minimizes the total length of your imaging train. This shortened path is often critical for reaching focus in telescopes with limited back focus, such as Schmidt-Cassegrains. The rigid, all-threaded connection also eliminates any potential for sag or flexure that can occur with slip-fit adapters, keeping your optics perfectly aligned.\u003c\/p\u003e\n\u003cp\u003eThis secure attachment makes the locking ring an excellent choice for public observatories or outreach events. It prevents the binoviewer from being accidentally loosened or removed, ensuring equipment safety during frequent use.\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\u003eRotational Lock and Adjustable Lever for Ergonomic Control\u003c\/h3\u003e\n\u003cp\u003eThe primary function of the ring is to allow you to orient the binoviewer to the most comfortable viewing angle and then lock it firmly in place with the attached lever. This prevents unwanted rotation while you observe or adjust the interpupillary distance.\u003c\/p\u003e\n\u003cp\u003eFor added convenience, the control lever itself is repositionable. If it comes to rest in an awkward position or interferes with other equipment, you can unscrew it and move it to one of several threaded holes spaced around the ring's circumference, ensuring comfortable and unobstructed operation in any telescope configuration.\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 purpose of the Baader T-2 Locking Ring for the MaxBright II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main purpose is to replace the standard T-2 counter nut to create a more \u003cstrong\u003erigid, secure, and shorter\u003c\/strong\u003e connection between a MaxBright II binoviewer and a T-2 star diagonal or focuser. This allows for precise rotational positioning and helps in achieving focus on telescopes with limited back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this locking ring improve the connection over a standard T-2 counter nut?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard counter nut can sometimes loosen, allowing the binoviewer to rotate unexpectedly. The \u003cstrong\u003eBaader T-2 Locking Ring with Lever\u003c\/strong\u003e provides a much more positive and secure lock, completely preventing any rotational shift once tightened. This results in a connection that feels like a single, solid unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still adjust the interpupillary distance on my MaxBright II with this ring installed?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The locking ring secures the rotational position of the entire binoviewer body on the telescope's optical axis. It does not interfere with the separate mechanism that allows you to adjust the distance between the eyepieces (interpupillary distance).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the Baader T-2 Locking Ring recommended for public outreach or observatory use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor public or permanent setups, security and robustness are key. The Baader T-2 Locking Ring creates a direct-threaded connection that cannot be accidentally loosened or removed like a standard slip-fit or compression ring adapter. This ensures the binoviewer stays securely attached, even with frequent handling by many different users.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat if the locking lever on the Baader T-2 Locking Ring ends up in an awkward position?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe lever is designed to be repositioned. It is threaded into the outer circumference of the ring. If it stops in a position that is hard to reach or blocks other accessories, you can simply unscrew it and move it to one of the other available threaded holes on the ring for better ergonomic placement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this locking ring help shorten the optical path when using my MaxBright II on an SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is a significant advantage. By enabling the most direct connection possible and eliminating the space taken up by other adapters, the \u003cstrong\u003eBaader T-2 Locking Ring\u003c\/strong\u003e helps shorten the overall light path. This can be the critical factor that allows a binoviewer to reach focus on a Schmidt-Cassegrain (SCT) or other telescope with limited back focus.\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\u003eBaader MaxBright II Binoviewer and T-2 System Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eRotational Locking and Secure Threaded Connection\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\u003eType of Adapter\u003c\/td\u003e\n\u003ctd\u003eSame-Thread Adapter, Variable Focusing\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_MaxBright_II_Binoviewer_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 MaxBright II Binoviewer 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":"Default Title","offer_id":44967300333853,"sku":"BAA-2458271","price":53.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-T-2-Locking-Ring-with-Lever-for-MaxBright-II-1__16481.1597110527.1280.1280.jpg?v=1684340128"},{"product_id":"baader-90-astro-grade-amici-prism-w-bbhs-coating-t-2","title":"Baader 90° Astro-Grade Amici Prism w\/ BBHS Coating - T-2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e90° comfortable viewing angle\u003c\/li\u003e\n\u003cli\u003eAmici prism design provides correctly oriented, erect images\u003c\/li\u003e\n\u003cli\u003eFeatures a full 1.25\" clear aperture to prevent vignetting\u003c\/li\u003e\n\u003cli\u003eBaader BBHS® coatings for maximum image brightness and contrast\u003c\/li\u003e\n\u003cli\u003eDual T-2 (M42x0.75) threads for direct, secure connections\u003c\/li\u003e\n\u003cli\u003eSolid metal body ensures precise optical alignment\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 90° Astro-Grade Amici Prism w\/ BBHS Coating - T-2\u003c\/h2\u003e\n\u003cp\u003eThe Baader 90° Astro-Grade Amici Prism delivers correctly oriented, right-side-up images through a full 1.25-inch clear aperture, making it an essential tool for high-power terrestrial, nature, and white-light solar observing where intuitive image orientation is critical.\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\u003e90° Correct-Image Views with a Full 1.25\" Aperture\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard star diagonal that corrects the image up-down but leaves it reversed left-right, an Amici prism provides a fully correct, erect image. This makes navigating a landscape or tracking a moving target feel completely natural. Baader's \"Astro-Grade\" designation signifies this prism is manufactured to a higher optical standard than typical terrestrial prisms, ensuring sharp, detailed views worthy of a high-quality telescope. Its full 1.25\" clear aperture guarantees that even your widest-field 1.25\" eyepieces are fully illuminated without vignetting.\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\u003eBBHS® Coatings for High-Contrast Terrestrial and Solar Observing\u003c\/h3\u003e\n\u003cp\u003eThis prism features Baader's proprietary BBHS® (Broadband Hard-Coated Silver) coatings. This advanced silver coating provides exceptionally high reflectivity across the visual spectrum, resulting in a noticeably brighter and higher-contrast image compared to prisms with standard aluminum coatings. The entire optical element is housed in a solid metal body, which maintains perfect alignment and ensures a lifetime of reliable use 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\u003eDual T-2 Threads: An Ultra-Short, Adaptable Prism Body\u003c\/h3\u003e\n\u003cp\u003eEngineered for maximum adaptability, this Amici prism features T-2 (M42x0.75) threads on both the telescope and eyepiece sides. This allows for a direct, secure, and flexure-free connection within the extensive Baader T-2 Astro-System. The \"extremely short\" body design minimizes the optical path length, making it easier to reach focus in a wide variety of telescopes and accessory configurations, from spotting scopes to refractors.\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 use for the Baader T-2 Amici Prism?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader 90° Amici Prism is designed for applications where a fully corrected, non-reversed image is essential. This makes it ideal for \u003cstrong\u003eterrestrial and nature observing\u003c\/strong\u003e, as well as for \u003cstrong\u003ewhite-light solar viewing\u003c\/strong\u003e with an appropriate main-objective filter. The correct image orientation allows for intuitive panning and tracking of moving objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader Amici Prism suitable for astronomical deep-sky imaging or observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it can be used, it's not the optimal choice for critical deep-sky observing. Amici prisms inherently have a very faint dividing line (the \"roof edge\") that can be visible on bright stars or extended objects at high magnification. For astronomical use, a high-quality mirror or standard prism diagonal like the Baader T-2 Zeiss Prism Diagonal will provide a slightly higher-contrast view without this artifact.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the T-2 threads on the Baader Amici Prism work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-2 threads (M42x0.75) on both sides of the prism body allow it to be integrated directly into a modular system of accessories. You can thread on T-2 to 1.25\" eyepiece holders, camera adapters, or extension tubes for a rigid, secure connection that avoids the potential for tilt or slop from traditional slip-fit accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the BBHS® coating on this Baader prism special?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBBHS® stands for Broadband Hard-Coated Silver. Unlike standard aluminum coatings, this advanced silver coating provides very high, uniform reflectivity across the entire visual spectrum. This results in a brighter image with more neutral color balance and enhanced contrast, which is especially beneficial for discerning subtle details during daytime observing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader 90° Amici Prism for daytime birdwatching with my apochromatic refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is a perfect application for this prism. Pairing it with a high-quality refractor turns your astronomy telescope into a world-class spotting scope. The \"Astro-Grade\" optics will preserve the sharpness of your telescope, and the correct image orientation makes following birds in flight effortless.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader Amici Prism's 1.25\" aperture cause vignetting with my Tele Vue 24mm Panoptic eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Baader Amici Prism is designed with a \"full 1.25\" aperture,\" meaning it has a clear opening large enough to illuminate the maximum field stop of the 1.25\" format. The 24mm Panoptic, which has one of the largest field stops available in a 1.25\" eyepiece, will be fully illuminated without any dimming at the edges of the field.\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\u003ePrism Type\u003c\/td\u003e\n\u003ctd\u003e90° Astro-Grade Amici Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect, non-reversed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eBaader BBHS® (Broadband Hard-Coated Silver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Construction\u003c\/td\u003e\n\u003ctd\u003eSolid Metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42x0.75) Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Connection\u003c\/td\u003e\n\u003ctd\u003eT-2 (M42x0.75) Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Glass (Type)\u003c\/td\u003e\n\u003ctd\u003eBaK-4\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\u003eno clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e47.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eSealed BBHS coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlas path\u003c\/td\u003e\n\u003ctd\u003e50 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\u003c\/ul\u003e\n\u003cp style=\"text-align: center;\"\u003eThis product consists of the prism body only. Eyepiece holders and telescope adapters are sold separately.\u003c\/p\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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Astro_T-2_System_Connections_Overview.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 Astro T-2 System Connections Overview\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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_Astro_T-2_System_Parts_List.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 Astro T-2 System Parts List\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":44967300366621,"sku":"BAA-2456130","price":430.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-90-degree-Astro-Grade-Amici-Prism-with-BBHS-Coating-T-2-1__82558.1597110529.1280.1280.jpg?v=1684340148"},{"product_id":"baader-90-astro-grade-amici-prism-w-bbhs-coating-2-clicklock","title":"Baader 90° Astro-Grade Amici Prism w\/ BBHS Coating - 2\" ClickLock","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a fully corrected, non-reversed and non-inverted image\u003c\/li\u003e\n\u003cli\u003eComfortable 90° viewing angle\u003c\/li\u003e\n\u003cli\u003eFull 2-inch clear aperture prevents vignetting\u003c\/li\u003e\n\u003cli\u003eBaader BBHS® hard-silver coatings for maximum brightness and durability\u003c\/li\u003e\n\u003cli\u003eFeatures the Baader 2-inch ClickLock eyepiece clamp for secure, centered holding\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 90° Astro-Grade Amici Prism w\/ BBHS Coating - 2\" ClickLock\u003c\/h2\u003e\n\u003cp\u003eThe Baader 90° Astro-Grade Amici Prism provides fully corrected images at a comfortable 90° viewing angle. Its full 2-inch aperture and advanced BBHS® coatings ensure maximum brightness for both daytime nature observation and nighttime astronomical use.\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\u003eCorrectly Oriented Views: The 90° Astro-Grade Amici Prism\u003c\/h3\u003e\n\u003cp\u003eUnlike a standard star diagonal that shows a mirror-reversed image, an Amici prism corrects the view in both axes, delivering an image that is upright and true-to-life. This makes the Baader 90° Amici Prism ideal for terrestrial observation with an astronomical telescope, turning your instrument into a high-power spotting scope. The \"Astro-Grade\" designation signifies high-precision manufacturing, which minimizes the central diffraction spike inherent in simpler Amici designs, preserving image contrast for astronomical targets.\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\u003eBBHS® Coatings on a 2-inch Prism: Uncompromised Brightness\u003c\/h3\u003e\n\u003cp\u003eThis prism features Baader's Broadband Hard-Silver (BBHS®) coating on its reflective surfaces. This advanced dielectric-protected silver coating provides exceptionally high reflectivity across the entire visual spectrum, resulting in brighter, higher-contrast images than diagonals with standard aluminum or simple silver coatings. The hard-silver coating is also incredibly durable, protecting the prism for years of reliable use.\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 ClickLock System: Instant, Secure Clamping\u003c\/h3\u003e\n\u003cp\u003eThe integrated 2-inch Baader ClickLock clamp replaces traditional thumbscrews with a more elegant and secure solution. A gentle twist of the outer ring activates a three-point clamping system that holds any 2-inch eyepiece or accessory firmly and perfectly centered on the optical axis. This system prevents marring of your eyepiece barrels and ensures a solid connection that won't slip, even with heavy accessories.\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 2-inch Aperture: No Vignetting with Wide-Field Eyepieces\u003c\/h3\u003e\n\u003cp\u003eEngineered with a full 2-inch clear aperture, this Amici prism ensures that the light cone from your telescope is not obstructed before reaching your eyepiece. This is critical when using low-power, wide-field 2-inch eyepieces to view expansive targets like the Andromeda Galaxy (M31) or the Pleiades (M45). The unrestricted light path guarantees a fully illuminated field of view, free from the dimming at the edges known as vignetting.\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 Baader 90° Astro-Grade Amici Prism over a standard star diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is \u003cstrong\u003efully corrected image orientation\u003c\/strong\u003e. A standard diagonal provides an upright but mirror-reversed image (left and right are swapped). The Baader Amici Prism corrects both axes, so the view is upright and not reversed, matching what you see with your naked eyes or on a star chart. This is essential for terrestrial viewing and intuitive for astronomical navigation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 2\" Amici Prism perform for birdwatching with a high-end refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt performs exceptionally well. The correctly oriented image is perfect for tracking moving subjects like birds. The \u003cstrong\u003eBBHS® coatings\u003c\/strong\u003e ensure the brightest possible image with true-to-life color fidelity, allowing you to see fine feather details and subtle coloration, while the 90° angle provides a comfortable viewing position for extended periods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"Astro-Grade\" designation mean for this Baader Amici Prism?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\"Astro-Grade\" refers to the high optical and mechanical precision used in its construction. All Amici prisms have a \"roof edge\" that can create a faint diffraction spike on very bright point sources. Baader's Astro-Grade manufacturing process sharpens this edge to a much higher tolerance than standard prisms, \u003cstrong\u003eminimizing the spike\u003c\/strong\u003e so it is virtually invisible on all but the brightest stars, preserving high-contrast planetary and deep-sky views.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 2-inch ClickLock clamp work on this Baader prism?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader ClickLock clamp is a pressure-locking system that eliminates the need for thumbscrews. A gentle \u003cstrong\u003e20° twist\u003c\/strong\u003e of the rubberized outer ring engages three hardened steel rollers that securely grip the eyepiece barrel. This provides three key benefits:\u003cbr\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect Centering:\u003c\/strong\u003e The eyepiece is always held exactly on the optical axis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Hold:\u003c\/strong\u003e It provides a very strong, slip-free grip on heavy eyepieces and cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Damage:\u003c\/strong\u003e It won't scratch or mar the barrels of your expensive eyepieces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs there any optical trade-off when using an Amici prism like the Baader 90° Astro-Grade for astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe only theoretical trade-off is the potential for a faint diffraction spike on extremely bright stars like Vega or Sirius, caused by the prism's roof edge. However, the \"Astro-Grade\" precision of the Baader prism makes this effect so minimal that it is unnoticeable for the vast majority of astronomical observing, including detailed views of the Moon, planets, and deep-sky objects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader 2\" Amici Prism to get a correctly oriented view of the Moon in my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. It is an excellent choice for this. An SCT combined with this prism will show you the Moon exactly as it appears on a map or to the naked eye. This is especially useful for public outreach or when sharing views with beginners, as they can easily match what they see in the eyepiece to what they see in the sky.\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\u003e0.66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Glass (Type)\u003c\/td\u003e\n\u003ctd\u003eBaK-4\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\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e85\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), M55\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\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect image, Non-reversed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eSealed BBHS coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlas path\u003c\/td\u003e\n\u003ctd\u003e70 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\"\u003eBaader 90° Astro-Grade Amici Prism w\/ 2\" ClickLock and 2\" Nosepiece\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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 Policy\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967300399389,"sku":"BAA-2456120","price":976.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-90-degree-Astro-Grade-Amici-Prism-with-BBHS-Coating-2-inch-ClickLock-1__04910.1597110530.1280.1280.jpg?v=1684340157"},{"product_id":"baader-45-amici-prism-diagonal-w-24mm-clear-aperture-1-25","title":"Baader 45° Amici Prism Diagonal  w\/ 24mm Clear Aperture - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a correctly oriented, erect image for terrestrial viewing\u003c\/li\u003e\n\u003cli\u003eComfortable 45° viewing angle\u003c\/li\u003e\n\u003cli\u003eFull 24mm clear aperture prevents vignetting with low-power eyepieces\u003c\/li\u003e\n\u003cli\u003eStandard 1.25\" barrel fits most telescopes and spotting scopes\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 45° Amici Prism Diagonal w\/ 24mm Clear Aperture - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader 45° Amici Prism Diagonal delivers correctly oriented images for terrestrial viewing through a standard 1.25\" barrel, specifically engineered to overcome the limitations of common erect-image prisms. Its defining feature is a full 24mm clear aperture, which provides complete illumination for wide-field eyepieces and prevents the field-edge dimming that plagues diagonals using smaller 19mm prisms.\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\u003e24mm Clear Aperture: Maximizing Low-Power Terrestrial Views\u003c\/h3\u003e\n\u003cp\u003eFor terrestrial observation—be it birdwatching, nature studies, or surveillance—a wide, bright field of view is critical. This Baader Amici diagonal uses a high-quality prism with a 24mm clear internal aperture, ensuring the entire light cone from your telescope reaches your low-power, wide-field eyepieces without being cut off. The result is a fully illuminated, edge-to-edge sharp view that makes spotting and tracking moving targets effortless.\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 24mm vs. Standard 19mm Amici: The Wide-Field Difference\u003c\/h3\u003e\n\u003cp\u003eMany erect-image diagonals on the market use undersized prisms with clear apertures of only 19mm. While functional at high power, they cause significant vignetting (dimming at the edges) when paired with low-power eyepieces like a 32mm Plössl. The Baader 45° Amici Diagonal's larger 24mm prism eliminates this compromise, making it the superior choice for anyone who values a complete, unrestricted field of view for daytime 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\"\u003eWhy is the 24mm clear aperture of the Baader Amici Diagonal important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e24mm clear aperture\u003c\/strong\u003e is crucial for low-magnification, wide-field viewing. Many standard 1.25\" diagonals use smaller prisms (around 19mm) that physically block a portion of the light cone when used with wide-field eyepieces. This Baader diagonal's larger aperture prevents that \"keyhole\" effect, ensuring a bright, fully illuminated view right to the edge of the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader 45° Amici Diagonal suitable for astronomical observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile designed for terrestrial use, it can be used for casual astronomical viewing. However, Amici prisms inherently have a tiny ridge in the prism that can create a faint diffraction spike on very bright objects like Jupiter or bright stars. For critical planetary or deep-sky observation, a standard mirror or prism star diagonal is optically superior.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Baader Amici Diagonal perform with a 32mm Plössl eyepiece for birdwatching?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt will perform exceptionally well. A 32mm Plössl is a classic low-power eyepiece that benefits greatly from the diagonal's 24mm clear aperture. You will get a bright, wide, and correctly oriented view without the edge-of-field dimming common with lesser diagonals, making it ideal for spotting birds against a complex background.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"Amici Prism\" mean and why is it 45°?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn \u003cstrong\u003eAmici prism\u003c\/strong\u003e, or roof prism, is an optical design that corrects the image both vertically and horizontally. This provides a view that is identical to what you see with your naked eye (not mirror-reversed), which is essential for terrestrial use. The \u003cstrong\u003e45° angle\u003c\/strong\u003e provides a much more comfortable viewing position for looking at objects on or near the horizon compared to a 90° astronomical diagonal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need to re-focus when switching to the Baader 45° Amici Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you will likely need to adjust focus. Different diagonals have different optical path lengths, meaning they change the point where the telescope's image comes to focus. This is normal and easily corrected by turning your telescope's focuser knob.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader Amici Diagonal with my 80mm f\/7 refractor for scenic viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. An 80mm f\/7 refractor is a perfect match for this diagonal. It will turn your telescope into a high-quality spotting scope, providing crisp, correctly oriented views of distant landscapes, ships at sea, or wildlife. The 24mm aperture ensures you can take full advantage of low-power eyepieces for the widest possible vistas.\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\u003eDiagonal Type\u003c\/td\u003e\n\u003ctd\u003e45° Amici Prism (Erect Image)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eMulti-Coated (MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eScrew clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003e1.4\" Thread (35.5 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect image, Non-reversed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eTotal reflection\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 45° Amici Prism Diagonal - 1.25\"\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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":"Default Title","offer_id":44967300464925,"sku":"BAA-2956150","price":123.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-45-degree-Amici-Prism-Diagonal-with-24mm-Clear-Ape-1__37884.1597110531.1280.1280.jpg?v=1684340160"},{"product_id":"baader-45-amici-prism-diagonal-45-2-sct-thread","title":"Baader 45° Amici Prism Diagonal 45° - 2\" SCT Thread","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a fully corrected, upright, and non-reversed image\u003c\/li\u003e\n\u003cli\u003eComfortable 45° viewing angle for terrestrial observation\u003c\/li\u003e\n\u003cli\u003eAttaches directly to 2\" SCT rear cell threads\u003c\/li\u003e\n\u003cli\u003eAccepts both 2\" and 1.25\" eyepieces via included reducer\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 45° Amici Prism Diagonal - 2\" SCT Thread\u003c\/h2\u003e\n\u003cp\u003eThe Baader 45° Amici Prism Diagonal converts your Schmidt-Cassegrain telescope for terrestrial viewing by delivering a fully corrected image at a comfortable 45° angle. It connects directly to a standard 2\" SCT thread and includes a reducer to accept both 2\" and 1.25\" eyepieces, making it a dedicated tool for daytime observation, birdwatching, or surveillance.\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 45° Amici Prism: A Fully Correct, Non-Reversed Image\u003c\/h3\u003e\n\u003cp\u003eUnlike standard astronomical diagonals that leave the image mirror-reversed, the Amici \"roof\" prism design in this Baader 45° diagonal corrects the view on both axes. This means landscapes, boats on the water, and wildlife appear exactly as they would through binoculars—upright and correctly oriented left-to-right. This intuitive view is essential for terrestrial use where a reversed image would be disorienting.\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\" SCT Threads and 1.25\" Eyepiece Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis diagonal is engineered for a secure, direct connection to the rear cell of most Schmidt-Cassegrain telescopes, eliminating the flexure common with standard 2\" nosepiece adapters. The eyepiece holder accepts large 2\" wide-field eyepieces, and with the included 2\" to 1.25\" reducer, you can also use the full range of standard 1.25\" eyepieces for higher magnification.\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 45° Amici vs. 90° Star Diagonals: Terrestrial vs. Astronomical Use\u003c\/h3\u003e\n\u003cp\u003eChoosing between a 45° Amici and a 90° star diagonal depends entirely on your primary target. The Baader 45° Amici is the superior choice for daytime and terrestrial viewing, where a comfortable downward-looking angle and a non-reversed image are critical.\u003c\/p\u003e\n\u003cp\u003eFor astronomical targets high in the sky, a 90° star diagonal provides a more comfortable head position and, if it's a high-quality mirror model, typically offers slightly higher light transmission and contrast. The roof-edge in an Amici prism can introduce a faint diffraction spike on extremely bright point sources like Vega or Jupiter, making the 90° diagonal a better tool for critical deep-sky and planetary 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 main advantage of the Amici prism in the Baader 45° Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is a \u003cstrong\u003efully corrected image\u003c\/strong\u003e. An Amici prism corrects the view both vertically (up-down) and horizontally (left-right). This provides an intuitive, non-reversed image identical to what you'd see with your naked eye or through binoculars, which is essential for terrestrial and daytime observing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 45° Amici Diagonal work for birdwatching with a Celestron 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt's an excellent combination. The diagonal threads directly onto the 8\" SCT's rear cell for a stable connection. The 45° angle is comfortable for scanning landscapes or treetops, and the correctly oriented image makes it easy to follow moving birds. Using a low-power 2\" eyepiece gives you a wide field to locate subjects, while a higher-power 1.25\" eyepiece lets you zoom in on details.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader 45° Amici Diagonal to view the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. It's a great choice for casual lunar viewing, as the Moon will appear in its correct orientation, just as it does in the sky. For high-magnification scientific observation of subtle crater details, a high-quality 90° mirror diagonal may provide slightly better contrast, but for an intuitive view, the 45° Amici is perfect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Baader diagonal work with my refractor or Newtonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this model is designed specifically to attach to the \u003cstrong\u003e2\" SCT thread\u003c\/strong\u003e found on the back of Schmidt-Cassegrain and some Maksutov-Cassegrain telescopes. It does not have a standard 2\" nosepiece to slide into a refractor's focuser drawtube and is not intended for use with Newtonian reflectors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is a 45° diagonal better for daytime use than a 90° diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 45° angle provides a more natural and comfortable viewing position when your telescope is pointed horizontally or slightly downwards at terrestrial targets. A 90° diagonal would force you to look straight down into the eyepiece, which is awkward for daytime use but ideal for looking up at astronomical objects near the zenith.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this Baader diagonal accept both 2\" and 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Baader 45° Amici Prism Diagonal has a native 2\" eyepiece holder and comes with a \u003cstrong\u003e2\" to 1.25\" reducing adapter\u003c\/strong\u003e. This allows you to use the widest possible range of eyepieces, from low-power 2\" wide-fields to high-power 1.25\" planetary eyepieces.\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\u003e0.47\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e45°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eMulti-Coated (MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eDovetail clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e121mm with 2\" barrel; with 1.25\"-reducer additional 10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm), ø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003e2\"\/SCT Thread (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect image, Non-reversed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eTotal reflection\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 45° Amici Prism Diagonal with 2\" SCT Thread\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\" to 1.25\" Reducer\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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":"Default Title","offer_id":44967300497693,"sku":"BAA-2956151","price":348.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-45-degree-Amici-Prism-Diagonal-45-degree-2-inch-SCT-Thread-1__56303.1597110532.1280.1280.jpg?v=1684340163"},{"product_id":"baader-90-erecting-prism-diagonal-2","title":"Baader 90° Erecting Prism Diagonal - 2\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides a fully erect, non-reversed image\u003c\/li\u003e\n\u003cli\u003e90° viewing angle for comfortable observing\u003c\/li\u003e\n\u003cli\u003e2\" barrel for use with large focusers\u003c\/li\u003e\n\u003cli\u003eIncludes a 2\" to 1.25\" reducer for eyepiece versatility\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 90° Erecting Prism Diagonal - 2\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader 90° Erecting Prism Diagonal delivers a fully corrected, right-side-up and left-to-right correct image at a comfortable 90° angle, making it ideal for terrestrial viewing through an astronomical telescope. Its robust 2\" barrel is designed to fit large focusers, enabling the use of wide-field eyepieces for expansive daytime landscapes or rich-field stargazing. For maximum flexibility, it includes a reducer for compatibility with the universally common 1.25\" eyepiece format.\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 90° Correct-Image View for Terrestrial and Astronomical Use\u003c\/h3\u003e\n\u003cp\u003eUnlike standard star diagonals that produce a mirror-reversed image, an erecting prism corrects the view on both axes. This is essential for terrestrial applications like birdwatching or nature observation, where an upside-down or reversed image would be disorienting. For astronomical use, it provides an intuitive view that matches star charts, which is particularly helpful for beginners navigating the constellations or for public outreach.\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 2\" Format Advantage with a 1.25\" Adapter\u003c\/h3\u003e\n\u003cp\u003eThe 2\" barrel format allows the diagonal to accept eyepieces with the largest possible field stops, maximizing the true field of view your telescope can deliver. This is perfect for framing broad landscapes or sweeping through the Milky Way. The included high-quality 2\" to 1.25\" reducer ensures you can still use your entire collection of standard 1.25\" eyepieces without needing to purchase a separate adapter, maintaining a secure and centered optical path.\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 Erecting Prism vs. a Standard 2\" Mirror Diagonal\u003c\/h3\u003e\n\u003cp\u003eChoosing between an erecting prism and a mirror diagonal involves a clear trade-off between image orientation and optical purity, especially for critical deep-sky imaging.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eErecting Prism (This Product):\u003c\/strong\u003e Its primary advantage is the fully corrected image, indispensable for terrestrial viewing. For casual astronomy, the convenience of a non-reversed view is significant. However, prisms can introduce a small amount of chromatic aberration, particularly in fast focal ratio telescopes (f\/6 or below).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror Diagonal:\u003c\/strong\u003e A high-quality mirror diagonal typically offers higher light transmission and superior color correction, making it the preferred choice for serious astronomical observing and astrophotography where every photon counts. Its drawback is the left-right reversed image, which is a non-issue for deep-sky objects but problematic for terrestrial use.\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 use for the Baader 90° Erecting Prism Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main purpose is to adapt an astronomical telescope, such as a refractor or Schmidt-Cassegrain, for \u003cstrong\u003eterrestrial daytime viewing\u003c\/strong\u003e. The prism corrects the image to be both upright and non-reversed, so landscapes, ships on the horizon, or wildlife appear as you would see them with binoculars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader 2\" Erecting Prism for observing planets and deep-sky objects?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you can. It provides an intuitive, correctly-oriented view that is helpful for navigating with star charts. While a high-quality mirror diagonal is often preferred for critical deep-sky and planetary observation due to slightly better light transmission and color fidelity, this erecting prism is perfectly suitable for casual and educational astronomical viewing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader 90° Erecting Prism Diagonal work with my Newtonian reflector telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Newtonian reflectors are not designed to use prism or mirror diagonals in their focusers. Adding one will prevent the telescope from reaching focus. This diagonal is designed for refractors, Schmidt-Cassegrains (SCTs), and Maksutov-Cassegrains (Maks).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 2\" Erecting Prism perform for birdwatching with a 100mm f\/7 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt performs exceptionally well in this scenario. A 100mm f\/7 refractor is an excellent instrument for high-power terrestrial viewing, and this diagonal will provide a bright, sharp, and correctly oriented image. The 2\" barrel allows the use of wide-field eyepieces to easily spot and track birds in flight, while the 1.25\" adapter lets you switch to higher power for detailed views of plumage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill I need an extension tube to reach focus with the Baader 90° Erecting Prism?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePossibly. Prism diagonals often require more \"in-focus\" travel than mirror diagonals. While most modern refractors and SCTs have enough focuser travel to accommodate them, some older designs might not. If you find you cannot rack the focuser in far enough to achieve a sharp image, you may need to shorten your optical train.\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 2\" barrel on the Baader Erecting Prism Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e2\" barrel\u003c\/strong\u003e allows the diagonal to accept 2\" eyepieces, which can provide a much wider true field of view than 1.25\" eyepieces. This is ideal for scanning large areas of the sky, like searching for the Andromeda Galaxy (M31), or for taking in wide terrestrial panoramas.\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\u003eDiagonal Type\u003c\/td\u003e\n\u003ctd\u003eErecting Prism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eViewing Angle\u003c\/td\u003e\n\u003ctd\u003e90°\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\u003eReducer Included\u003c\/td\u003e\n\u003ctd\u003e2\" to 1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eMulti-Coated (MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e38\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e99 mm with 2\" barrel; with 1.25\"-reducer additional 10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm), ø 2\" (50.8mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48\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)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Orientation\u003c\/td\u003e\n\u003ctd\u003eErect image, Non-reversed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReflection surface\u003c\/td\u003e\n\u003ctd\u003eTotal reflection\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 90° Erecting Prism Diagonal - 2\"\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\" to 1.25\" 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\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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":"Default Title","offer_id":44967300530461,"sku":"BAA-2956152","price":426.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-90-degree-Erecting-Prism-Diagonal-2-inch-1__24039.1597110533.1280.1280.jpg?v=1684340171"},{"product_id":"baader-flipmirror-ii-star-diagonal","title":"Baader FlipMirror II Star Diagonal","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eInstantly switch between three different instrument ports\u003c\/li\u003e\n\u003cli\u003eStraight-through port for primary camera or spectrograph\u003c\/li\u003e\n\u003cli\u003e90° mirrored port for visual observation or secondary camera\u003c\/li\u003e\n\u003cli\u003eAuxiliary bottom port for guiders or calibration lamps\u003c\/li\u003e\n\u003cli\u003ePrecision-coated mirror ensures high-quality images\u003c\/li\u003e\n\u003cli\u003eCompact design minimizes back-focus consumption\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 FlipMirror II Star Diagonal\u003c\/h2\u003e\n\u003cp\u003eThe Baader FlipMirror II Star Diagonal transforms your telescope's single focuser port into a versatile three-port imaging hub, eliminating the need to constantly swap accessories in the dark. It provides a straight-through path for a primary camera, a 90-degree mirrored path with a 32mm illuminated field for an eyepiece or guider, and a unique bottom port for calibration lamps or an off-axis guider prism. This system is the definitive solution for streamlining complex imaging, visual, and spectroscopy workflows.\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 Three-Port Hub to Eliminate Instrument Swapping\u003c\/h3\u003e\n\u003cp\u003eA single telescope port is a major bottleneck for serious astronomers. The FlipMirror II solves this by providing three configurable ports, allowing you to have an imager, an eyepiece, and a guider or spectrograph calibration source connected simultaneously. A simple turn of the rotary knob switches the light path between the straight-through rear port and the 90-degree top port, saving time and preventing wear on your equipment.\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-Fidelity Optics for Visual and Imaging\u003c\/h3\u003e\n\u003cp\u003eAt the core of the BFM II is a precise, surface-mirrored flip mirror featuring a multi-layer aluminum coating. This ensures that the angled light path delivers the same image brightness and resolution as a high-end standalone star diagonal. Whether you are conducting visual observations or capturing high-resolution images with small-pixel cameras, the FlipMirror II maintains the integrity of your optical train without compromise.\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\u003eTotal System Integration with the Baader Adapter Universe\u003c\/h3\u003e\n\u003cp\u003eDesigned for maximum compatibility, the FlipMirror II seamlessly integrates with the comprehensive Baader Astro T-2, M48, and M68 adapter systems. This modularity allows you to connect virtually any camera, eyepiece, or accessory while achieving precise optical alignment. Its thoughtful, compact design conserves precious back-focus, though any new component in the optical train requires consideration of the total path length. The system also enables precise adjustment of all light paths to achieve parfocality between your different 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\u003eUnlocking Advanced Workflows in Spectroscopy and Guiding\u003c\/h3\u003e\n\u003cp\u003eThe BFM II is purpose-built for advanced applications. The bottom auxiliary port can be used to mount a calibration lamp, allowing you to calibrate spectra without removing your spectrograph from the main port. The back of the flip mirror is also coated and masked to direct this calibration light onto the spectrograph slit. Alternatively, this port can house an off-axis-guider pickoff prism that remains independent of the main mirror's position, ensuring consistent guiding no matter which primary port is active.\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 are the three ports on the Baader FlipMirror II for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader FlipMirror II provides three connection points to manage your equipment efficiently:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Port (Straight-Through):\u003c\/strong\u003e This is the primary position for your main imaging camera or a spectrograph, offering a direct, unobstructed light path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Port (90° Angled):\u003c\/strong\u003e This port uses the internal mirror and functions like a star diagonal. It's ideal for a visual eyepiece for centering objects, or for a secondary camera.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom Port (Auxiliary):\u003c\/strong\u003e This port is designed for specialized tools like a spectrograph calibration lamp or an off-axis guider pick-off prism.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader FlipMirror II degrade my planetary images?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The Baader FlipMirror II uses a precise, surface-mirrored diagonal with a high-reflectivity multi-layer aluminum coating. Its optical quality is engineered to be on par with high-end star diagonals, ensuring that it does not introduce aberrations or reduce sharpness, even when used for high-resolution imaging with cameras that have small pixels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader FlipMirror II help with spectroscopy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe FlipMirror II is a powerful tool for spectroscopy. You can keep your spectrograph attached to the main straight-through port while attaching a calibration lamp to the bottom auxiliary port. The back of the flip mirror is specially coated to redirect the lamp's light into the spectrograph's slit by simply flipping the mirror, allowing for quick and easy calibration frames without disassembling your setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I motorize the Baader FlipMirror II for remote operation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Baader FlipMirror II is designed for future motorization. It can be operated with an optional toothed belt and motor, which can be controlled by systems like the Baader SteelDrive II controller. This allows you to switch between the imaging and visual ports remotely from your computer, which is essential for automated observatories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I set up the Baader FlipMirror II with my Celestron SCT and a ZWO camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a common SCT setup, you would attach the Baader FlipMirror II to your telescope's visual back. Your primary ZWO imaging camera would be connected to the straight-through rear port. An eyepiece for finding and centering objects would go in the 90-degree top port. If you use an off-axis guider, the OAG's pick-off prism could be attached to the bottom port, providing a permanent guiding solution regardless of which main port you are using.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Baader FlipMirror II consume a lot of back-focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader FlipMirror II has a compact and efficient design to minimize back-focus consumption. However, like any accessory added to an optical train (e.g., filter wheels, OAGs), it does have a specific light path length that must be accounted for. It's crucial to check the back-focus requirements of your telescope and any reducers or correctors to ensure you can reach focus with your 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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e55 mm with S52, 59 mm with M48\/T-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM48, S52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2), M48, S52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal\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_FlipMirror_II_Star_Diagonal_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 FlipMirror II Star Diagonal 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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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":"Default Title","offer_id":44967300694301,"sku":"BAA-2458055","price":332.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-FlipMirror-II-Star-Diagonal-1__35218.1597110539.1280.1280.gif?v=1684339985"},{"product_id":"baader-maxbright-mirror-diagonal-t-2","title":"Baader Maxbright Mirror Diagonal - T-2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFeatures Baader's T-2 System threads for full modularity\u003c\/li\u003e\n\u003cli\u003eHigh-reflectivity Maxbright mirror for bright, high-contrast views\u003c\/li\u003e\n\u003cli\u003eAll-metal housing for durability and precise alignment\u003c\/li\u003e\n\u003cli\u003eAdaptable for visual and imaging applications\u003c\/li\u003e\n\u003cli\u003eCompact design minimizes optical path length\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 Maxbright Mirror Diagonal - T-2\u003c\/h2\u003e\n\u003cp\u003eThe Baader T-2 Maxbright Mirror Diagonal serves as the versatile core of a custom-built optical train, offering unparalleled adaptability through the Baader T-2 thread system. Instead of being locked into a fixed 1.25\" or 2\" format, this diagonal provides T-2 (M42x0.75) threads on both the telescope and eyepiece sides, allowing you to create a rigid, optimized connection for any refractor or Schmidt-Cassegrain 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\u003eThe Baader T-2 System: A Fully Modular Diagonal Core\u003c\/h3\u003e\n\u003cp\u003eThe defining feature of this diagonal is its integration into the Baader T-2 Astro System. This modularity allows you to choose the exact adapters you need, minimizing optical path length and eliminating the potential for flexure common with slip-fit accessories. You can configure it as a standard visual diagonal with a 1.25\" nosepiece and eyepiece holder, or create a fully threaded imaging train by connecting it directly to T-2 compatible reducers, flatteners, and 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\u003eMaxbright Mirror: High-Reflectivity for Brighter Views\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the diagonal is Baader's Maxbright first-surface mirror, which provides exceptional reflectivity across the visual spectrum. This ensures that the maximum amount of light from your telescope reaches the eyepiece or camera sensor, resulting in brighter images and improved contrast. This is especially critical when observing faint deep-sky objects like the Veil Nebula (NGC 6960) or resolving subtle details on planetary surfaces.\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 Baader T-2 Maxbright Diagonal over a standard diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is \u003cstrong\u003emodularity\u003c\/strong\u003e. A standard diagonal has a fixed nosepiece and eyepiece holder. The Baader T-2 Maxbright Diagonal uses T-2 threads, allowing you to choose your own adapters to create a shorter, more rigid optical train that is perfectly matched to your specific telescope and camera or eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters do I need to use the T-2 Maxbright Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis diagonal is sold as a core component and requires separate adapters. For visual use in a standard 1.25\" focuser, you would typically need:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA \u003cstrong\u003e1.25\" nosepiece with a T-2 male thread\u003c\/strong\u003e for the telescope side.\u003c\/li\u003e\n\u003cli\u003eA \u003cstrong\u003eT-2 eyepiece holder\u003c\/strong\u003e, such as the Baader 1.25\" ClickLock, for the eyepiece side.\u003c\/li\u003e\n\u003c\/ul\u003e\nFor imaging, you can use various T-2 extension tubes and adapters to connect directly to your camera or field flattener.\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a mirror diagonal like the Baader Maxbright better than a prism diagonal for my SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor most applications, yes. A high-quality mirror diagonal like the Maxbright introduces no chromatic aberration, preserving the true color fidelity of the telescope. This is beneficial for all telescope types, but especially for \"fast\" optical systems (below f\/7). While prisms can sometimes offer slightly more contrast, modern dielectric mirror coatings have largely closed that gap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader T-2 Maxbright Diagonal for astrophotography of planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The high reflectivity of the Maxbright mirror ensures maximum light reaches your planetary camera, allowing for shorter exposures and higher frame rates, which helps to \"freeze\" atmospheric seeing. The rigid, threaded T-2 connections also prevent any tilt or flexure in the imaging train, which is critical for maintaining sharp focus at high magnifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"Maxbright\" designation mean?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eMaxbright\u003c\/strong\u003e is Baader Planetarium's designation for their high-reflectivity mirror coatings. While a standard aluminum mirror might reflect around 88-92% of light, a modern dielectric coating like that used on the Maxbright mirror offers significantly higher reflectivity. This results in a noticeably brighter view at the eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this T-2 diagonal work with Baader's binoviewers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this diagonal is an excellent choice for binoviewing. Its T-2 connections allow it to integrate seamlessly with accessories like Baader's Glasspath Correctors, which are often necessary to reach focus with binoviewers in refractors and Newtonians. The modularity helps in creating the shortest possible optical path.\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\u003e0.18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eno clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal\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\u003eDielectrically coated\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_Astro_T-2_System_Connections_Overview.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 Astro T-2 System Connections Overview\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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_Astro_T-2_System_Parts_List.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 Astro T-2 System Parts List\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":"Default Title","offer_id":44967301021981,"sku":"BAA-2456100","price":324.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Maxbright-Mirror-Diagonal-T-2-1__41388.1597110544.1280.1280.jpg?v=1684340179"},{"product_id":"baader-mirror-diagonal-w-bbhs-coating-t-2","title":"Baader Mirror Diagonal w\/ BBHS Coating - T-2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eBBHS® BroadBand Hard Silver Coating\u003c\/li\u003e\n\u003cli\u003eProtective Dielectric Overcoat\u003c\/li\u003e\n\u003cli\u003eBaader T-2 System Component\u003c\/li\u003e\n\u003cli\u003eModular Threaded Connections\u003c\/li\u003e\n\u003cli\u003eOptimized for High Reflectivity\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 T-2 BBHS Mirror Diagonal\u003c\/h2\u003e\n\u003cp\u003eThe Baader T-2 BBHS Mirror Diagonal is engineered around a single goal: to deliver the highest possible light transmission with uncompromising durability. It combines the raw reflectivity of a hard silver coating with the resilience of a modern dielectric overcoat, creating a hybrid mirror that excels across the entire visual spectrum. As a core component of the Baader T-2 Astro System, this diagonal body offers complete modularity for building a rigid, minimal-length imaging or visual 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\u003eBBHS Hybrid Silver Coating: Reflectivity and Durability\u003c\/h3\u003e\n\u003cp\u003eThe heart of this diagonal is its BroadBand Hard Silver (BBHS) coating. Unlike standard aluminum or dielectric mirrors, it uses a silver base layer for its exceptionally high reflectivity, especially in the red and near-infrared portions of the spectrum. This makes a noticeable difference in image brightness, particularly when observing faint nebulae rich in H-alpha emissions.\u003c\/p\u003e\n\u003cp\u003eHistorically, the drawback of silver has been its tendency to tarnish. Baader solves this by sealing the silver under a hard dielectric protective overcoat. This multi-layer system gives you the longevity and cleaning resilience of a dielectric mirror while preserving the superior brightness of silver, offering a no-compromise optical 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\u003eThe Baader T-2 Astro System: Ultimate Modularity\u003c\/h3\u003e\n\u003cp\u003eThis diagonal is not a standalone accessory but a central hub in the Baader T-2 Astro System. Instead of fixed 1.25\" or 2\" barrels, it features T-2 threads on both its inlet and outlet faces. This design allows you to create a completely customized and rigidly-coupled connection between your telescope and eyepiece or camera.\u003c\/p\u003e\n\u003cp\u003eFor astrophotographers, this modularity is critical for minimizing back-focus and eliminating flexure. You can attach T-2 nosepieces, extension tubes, off-axis guiders, and eyepiece holders like the Baader ClickLock to build an optical train with the shortest possible path length. For visual observers, it means you can configure the diagonal to work perfectly with any telescope or eyepiece format.\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\u003eBBHS Mirror vs. Dielectric: A Choice for Visual and H-Alpha Imaging\u003c\/h3\u003e\n\u003cp\u003eWhile a high-quality dielectric diagonal offers excellent, flat reflectivity across the visual spectrum and extreme durability, the BBHS silver mirror provides a distinct advantage. The competitor's strength is its ruggedness and consistent reflection, making it a reliable workhorse.\u003c\/p\u003e\n\u003cp\u003eThe Baader BBHS diagonal, however, pushes reflectivity higher, particularly beyond 600nm. This results in visibly brighter images and enhanced contrast on emission nebulae. For an observer using an H-alpha filter or imaging deep-sky targets like the North American Nebula (NGC 7000), the increased red sensitivity of the BBHS coating extracts more signal and delivers a more vibrant view.\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 Baader T-2 BBHS Mirror Diagonal's coating?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is its \u003cstrong\u003ehybrid silver and dielectric design\u003c\/strong\u003e. It uses a BroadBand Hard Silver (BBHS) base for maximum reflectivity, especially in the red spectrum, resulting in brighter images. This silver layer is protected by a durable dielectric overcoat, preventing tarnish and making it as resilient as a standard dielectric mirror.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the T-2 system benefit my setup with this Baader diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-2 thread system provides complete \u003cstrong\u003emodularity\u003c\/strong\u003e. Instead of fixed barrels, you can attach any T-2 compatible accessory directly to the diagonal's body. This allows you to:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCreate a rigid, flex-free connection for imaging.\u003c\/li\u003e\n\u003cli\u003eMinimize the optical path length to save precious back-focus.\u003c\/li\u003e\n\u003cli\u003eAdapt the diagonal for use with 1.25\" or 2\" nosepieces and eyepiece holders.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a mirror diagonal like the Baader BBHS better than a prism for my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your telescope. For Schmidt-Cassegrains (SCTs), Maksutovs, and other long focal-ratio telescopes, a high-quality mirror diagonal like the BBHS is ideal, as it introduces no chromatic aberration. For very fast refractors (f\/5 or below), a prism diagonal can sometimes offer slightly better contrast and correct for minor spherical aberration, though the BBHS mirror's superior reflectivity remains a significant advantage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader BBHS diagonal work for H-alpha imaging of the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The BBHS coating is specifically designed to have enhanced reflectivity in the red end of the spectrum, which includes the 656nm H-alpha line. When imaging emission nebulae like the Orion Nebula (M42) or the North American Nebula (NGC 7000), this diagonal will transmit more of the critical light to your sensor compared to standard coatings, resulting in a stronger signal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the silver coating on the BBHS diagonal require special care?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. While unprotected silver tarnishes easily, the Baader BBHS mirror is sealed with a hard, protective dielectric overcoat. You can clean it just as you would any high-quality dielectric mirror, using standard, safe optical cleaning techniques. The overcoat ensures decades of high performance without degradation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2-inch eyepieces with the Baader T-2 BBHS Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but you will need the appropriate Baader T-2 adapters. The diagonal body itself has T-2 threads. To use 2-inch eyepieces, you would typically add a Baader T-2 to 2\" ClickLock or similar eyepiece holder to the output side of the diagonal. This modularity allows you to configure it for any standard.\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\u003e0.18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eno clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e33\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal\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\u003eBBHS coated\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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":"Default Title","offer_id":44967301054749,"sku":"BAA-2456103","price":401.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Mirror-Diagonal-with-BBHS-Coating-T-2-1__98849.1597110546.1280.1280.jpg?v=1684340187"},{"product_id":"baader-mirror-diagonal-w-bbhs-coating-2-clicklock","title":"Baader Mirror Diagonal w\/ BBHS Coating - 2\" ClickLock","description":"\u003c!-- more --\u003e\u003cul\u003e\n\u003cli\u003e2\" BBHS star diagonal with 2\" ClickLock terminal and black case. Provides greatest reflectance over most spectral range from 390 to 2000nm\u003c\/li\u003e\n\u003cli\u003eNew included item since 01\/2020: Baader 2\" Safety Kerf nosepiece with 2\" filter thread (#2408156) with additional grip and security from inadvertent slipping. This 2\" nosepiece replace the former included 2\" standard clamp with undercut\u003c\/li\u003e\n\u003cli\u003eMuch higher in brilliance than standard dielectric coatings\u003c\/li\u003e\n\u003cli\u003eBBHS = Broadband Hardsilver coating with dielectric protective overcoating\u003c\/li\u003e\n\u003cli\u003eT-2 BBHS-Sitall zenith mirrors on both sides with T-2 Photo thread\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/oYoymtIT0ww\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\u0026gt;\u0026lt;\/iframe\u0026gt;\u0026lt;\/div\u0026gt;\u0026lt;\/p\u0026gt;\u0026lt;\/div\u0026gt;\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":44967301087517,"sku":"BAA-2456115","price":698.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Mirror-Diagonal-with-BBHS-Coating-2-inch-ClickLock-1__62728.1597110547.1280.1280.jpg?v=1684340195"},{"product_id":"baader-mirror-diagonal-2-clicklock","title":"Baader Mirror Diagonal - 2\" ClickLock","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2-inch Barrel Format\u003c\/li\u003e\n\u003cli\u003eBaader ClickLock Eyepiece Clamp\u003c\/li\u003e\n\u003cli\u003eHigh-Reflectivity Mirror Design\u003c\/li\u003e\n\u003cli\u003ePrecision Machined Body\u003c\/li\u003e\n\u003cli\u003eSelf-Centering Clamp Mechanism\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 Mirror Diagonal - 2\" ClickLock\u003c\/h2\u003e\n\u003cp\u003eThe Baader 2\" ClickLock Mirror Diagonal replaces standard thumbscrew holders with a secure, self-centering clamp for heavy eyepieces and imaging equipment. A gentle twist of the outer ring locks any 2-inch accessory into place with a three-point grip that eliminates tilt and barrel scoring, ensuring your optical train remains perfectly aligned throughout the night.\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 Baader ClickLock System: A Secure, Self-Centering Grip\u003c\/h3\u003e\n\u003cp\u003eThe core of this diagonal is Baader's acclaimed ClickLock mechanism. Instead of relying on one or two thumbscrews that can push an eyepiece off-center, the ClickLock system uses a robust cam-and-roller design. This ensures that every accessory you insert is perfectly centered and held rigidly, which is critical for maintaining sharp focus, especially for astrophotography.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo More Marring:\u003c\/strong\u003e The even pressure from the three-point clamp prevents the scratches and gouges that thumbscrews often leave on expensive eyepiece barrels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffortless Operation:\u003c\/strong\u003e A small rotation of the knurled ring is all that's needed to lock or unlock your equipment. It's a simple, intuitive action that is easy to perform even with gloves on in cold weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible and Tactile Lock:\u003c\/strong\u003e You can feel and hear the mechanism engage, giving you confidence that your heavy wide-field eyepiece or camera is securely fastened.\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\u003eMirror Diagonal Optics: Maximizing Light for Deep-Sky Views\u003c\/h3\u003e\n\u003cp\u003eThis diagonal uses a mirror surface to bend the light path 90 degrees, a design favored for deep-sky observing. Mirror diagonals typically offer very high reflectivity across the entire visual spectrum, transmitting maximum light from faint galaxies and nebulae to your eye. This makes it an ideal choice for observers using reflectors or SCTs to hunt for faint, diffuse objects like the Veil Nebula (NGC 6960) or the Pinwheel Galaxy (M101).\u003c\/p\u003e\n\u003cp\u003eWhile the optical coatings are highly durable, the only trade-off for any mirror-based diagonal is that the coatings may degrade over many years of use, potentially requiring a recoat. However, for most users, a Baader diagonal will provide decades of high-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\u003eBaader ClickLock vs. Thumbscrew Diagonals: An Ergonomic Upgrade\u003c\/h3\u003e\n\u003cp\u003eFor observers who frequently change eyepieces, the ClickLock diagonal is a significant ergonomic improvement over traditional designs. There are no small screws to fumble with in the dark, and the risk of dropping an eyepiece while trying to secure it is greatly reduced.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThumbscrew Diagonal Weakness:\u003c\/strong\u003e Standard diagonals can introduce optical tilt if a screw is overtightened, shifting the focal plane and softening the image. They also provide a less secure grip on heavy accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaader ClickLock Advantage:\u003c\/strong\u003e The ClickLock's self-centering action and distributed pressure maintain perfect optical alignment regardless of the accessory's weight, preserving the sharpness your telescope is capable of delivering.\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\"\u003eWhen should I choose the Baader Mirror Diagonal over a prism diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003emirror diagonal\u003c\/strong\u003e, like this one, is generally preferred for deep-sky observing with any telescope, especially those with focal ratios of f\/7 or slower. It provides excellent light transmission across all wavelengths. A \u003cstrong\u003eprism diagonal\u003c\/strong\u003e can sometimes be a better choice for high-magnification planetary viewing in refractors, as it introduces no scattered light, but it may not perform as well at very fast focal ratios.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Baader 2\" ClickLock Diagonal handle heavy eyepieces on my Celestron 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Baader ClickLock diagonal is an excellent match for a Schmidt-Cassegrain Telescope (SCT). Its secure, three-point grip is specifically designed to hold heavy 2\" eyepieces, such as wide-field Naglers or Panoptics, without any wobble or tilt. This ensures that the collimation and alignment of your SCT's optical path are maintained perfectly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ClickLock mechanism scratch my eyepiece barrels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. In fact, the ClickLock system is designed to prevent the very scratches and gouges that traditional thumbscrews cause. It applies firm, even pressure using hardened rollers against a compression ring, never making direct metal-on-metal contact with a sharp point.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader 2\" ClickLock Diagonal compatible with both refractors and SCTs?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This diagonal comes with a standard 2\" nosepiece that fits into any 2\" focuser, common on most refractors. For use with an SCT, you will need an SCT-to-2\" adapter that threads onto the rear cell of your telescope, which then allows you to insert the diagonal.\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 Baader ClickLock Diagonal in cold weather?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe large, knurled locking ring is easy to grip and operate even when wearing thick winter gloves. This is a major advantage over tiny thumbscrews, which can be difficult or impossible to turn with cold hands or gloves, making eyepiece changes much faster and more comfortable during winter observing sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I clean the mirror on my Baader ClickLock Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe mirror should only be cleaned when absolutely necessary. First, use a bulb blower to remove any loose dust. For fingerprints or stubborn residue, use a dedicated optical cleaning solution and sterile cotton balls or optical wipes. Apply the solution to the cotton, not directly to the mirror, and gently wipe in a single direction. Avoid excessive pressure or circular scrubbing motions.\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\u003e0.48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e90°\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\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e46.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e112\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\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM48, 2\"\/SCT Thread (50.8mm)\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)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eMirror Diagonal\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\u003eDielectrically coated\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\"\u003eInformation Not Available\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\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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_ClickLock_Diagonal_Mirror_2in_M68_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 ClickLock Diagonal Mirror 2in M68 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_ClickLock_Clamps_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 ClickLock Clamps 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":44967301611805,"sku":"BAA-2956100","price":431.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Mirror-Diagonal-2-inch-ClickLock-1__35364.1597110552.1280.1280.jpg?v=1684340204"},{"product_id":"baader-90-zenith-prism-diagonal-w-32mm-prism-1-25","title":"Baader 90° Zenith Prism Diagonal w\/ 32mm Prism - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e90° Zenith Prism Diagonal\u003c\/li\u003e\n\u003cli\u003eOversized 32mm Prism\u003c\/li\u003e\n\u003cli\u003e1.25\" Barrel Format\u003c\/li\u003e\n\u003cli\u003eBaader T-2 System Threads\u003c\/li\u003e\n\u003cli\u003eIncludes 1.25\" Eyepiece Holder \u0026amp; Nosepiece\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 90° Zenith Prism Diagonal w\/ 32mm Prism - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader 90° Zenith Prism Diagonal features an oversized 32mm prism to ensure full, unvignetted illumination for any 1.25\" eyepiece. Built around the versatile Baader T-2 thread system, this diagonal includes a 1.25\" nosepiece and eyepiece holder, providing a high-contrast optical core for refractors and Schmidt-Cassegrains 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\u003eThe 32mm Prism: High-Contrast Views for Refractors\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is a large 32mm prism, which provides a generous clear aperture. This size prevents the field-edge dimming that can occur in smaller diagonals when using long focal length 1.25\" eyepieces. Prism diagonals are renowned for delivering higher contrast than mirror-based alternatives, making them a superior choice for detailed lunar and planetary observation in refractors or SCTs.\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 M42 T-2 System: Beyond 1.25\" Connections\u003c\/h3\u003e\n\u003cp\u003eThis is more than a simple diagonal; it's a component of the Baader Astro T-2 System. The central prism housing features standard T-2 (M42x0.75) threads on both sides, allowing for a rigid, direct-threaded connection to a vast ecosystem of adapters, focusers, and cameras. While it functions perfectly as a 1.25\" visual accessory with the included parts, the T-2 system allows you to build a custom, secure imaging or visual train without the flexure of standard slip-fit connections.\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 32mm Prism vs. 1.25\" Mirror Diagonals: The Contrast Advantage\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a diagonal, the primary alternative is a dielectric mirror. While high-quality mirror diagonals offer slightly higher light transmission, this Baader 32mm prism provides a tangible advantage in image contrast. This makes subtle details on Jupiter's cloud bands or fine rilles on the Moon's surface appear more distinct.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror Diagonal Advantage:\u003c\/strong\u003e Typically offers slightly better color correction in very fast (f\/5 and below) refractors and marginally higher light throughput.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaader Prism Advantage:\u003c\/strong\u003e Delivers noticeably higher contrast, ideal for high-magnification planetary viewing. The prism surface does not rely on a coating that can degrade over time, ensuring consistent optical quality for years.\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 choose the Baader 32mm prism diagonal for a refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA prism diagonal is an excellent match for refractors, especially for lunar and planetary observing. The inherent high-contrast nature of a prism enhances subtle surface details that can be washed out with mirror diagonals. The \u003cstrong\u003eoversized 32mm prism\u003c\/strong\u003e in this Baader model ensures it won't vignette the view of even the widest-field 1.25\" eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Baader 90° Prism Diagonal suitable for a Newtonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. Newtonian reflectors require a secondary mirror to direct light out the side of the tube and do not use a diagonal in the focuser. Furthermore, adding this Baader diagonal would push the focal point too far out, making it impossible to reach focus. This diagonal is designed for refractors, Schmidt-Cassegrains, and Maksutov-Cassegrains.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the T-2 thread system on this Baader diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-2 system is a universal standard (M42x0.75 thread) used by Baader Planetarium to create a modular ecosystem of astronomy accessories. The body of this \u003cstrong\u003eBaader 90° Prism Diagonal\u003c\/strong\u003e has T-2 threads on both the telescope and eyepiece sides, allowing you to replace the included 1.25\" adapters with other T-2 components for direct, secure connections to cameras, off-axis guiders, or other accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2\" filters with the Baader 1.25\" Prism Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot directly with the supplied 1.25\" nosepiece. The included nosepiece has threads for standard 1.25\" filters. To use 2\" filters, you would need to utilize the T-2 thread system to adapt the diagonal to a 2\" focuser or filter wheel, which would require separate Baader T-2 adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 32mm prism in this Baader diagonal compare to a mirror for viewing Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a target like Saturn, the Baader \u003cstrong\u003e32mm prism diagonal\u003c\/strong\u003e will typically provide a higher-contrast view, making the Cassini Division and subtle cloud banding stand out more sharply. While a high-quality dielectric mirror might be marginally brighter, the improvement in contrast from the prism is often more beneficial for resolving fine planetary detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat parts do I need to attach a camera to the Baader T-2 Prism Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou would unscrew the 1.25\" eyepiece holder to reveal the female T-2 threads. From there, you would need a T-2 extension tube of the correct length to achieve focus, and a T-2 to camera-mount adapter (e.g., T-2 to Canon EOS or T-2 to M48). The specific combination of adapters depends on your camera's back focus 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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e90°\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\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eStar Diagonal 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\u003eTotal reflection\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_Astro_T-2_System_Connections_Overview.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 Astro T-2 System Connections Overview\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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_Astro_T-2_System_Parts_List.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 Astro T-2 System Parts List\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":44967301644573,"sku":"BAA-2456005K","price":198.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-90-degree-Zenith-Prism-Diagonal-with-32mm-Prism-1-25-inch-1__95816.1597110553.1280.1280.jpg?v=1684340237"},{"product_id":"baader-star-diagonal-prism-w-zeiss-spec-prism-bbhs-coating-t-2","title":"Baader Star Diagonal Prism w\/ Zeiss Spec Prism \u0026 BBHS Coating - T-2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eZeiss-Specification Right-Angle Prism\u003c\/li\u003e\n\u003cli\u003eBaader BBHS® (Broadband Hard Silver) Coatings\u003c\/li\u003e\n\u003cli\u003eT-2 (M42x0.75) Threads on Input and Output Faces\u003c\/li\u003e\n\u003cli\u003eSolid, All-Metal Housing for Maximum Rigidity\u003c\/li\u003e\n\u003cli\u003eUltra-Short Optical Path Design\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 Star Diagonal Prism w\/ Zeiss Spec Prism \u0026amp; BBHS Coating - T-2\u003c\/h2\u003e\n\u003cp\u003eThe Baader T-2 Star Diagonal Prism delivers superior image fidelity using a genuine Zeiss-specification prism with optical surfaces boasting a planarity approximately 5x better than standard prisms. This high-precision optic is housed in a solid metal body featuring T-2 (M42x0.75) threads on both sides, creating a rigid, versatile, and extremely short connection within any imaging or visual 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 Prism 5x More Precise Than Standard Designs\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this diagonal is a right-angle prism manufactured to stringent Zeiss specifications. The planarity and conformity of the prism faces are held to a much higher standard than those found in typical diagonals, resulting in higher contrast and sharpness, especially at high magnifications. This prevents the subtle image degradation that can soften planetary details or split close double stars.\u003c\/p\u003e\n\u003cp\u003eThe prism is treated with Baader's Broadband Hard Silver (BBHS®) coatings. This advanced coating system provides exceptionally high reflectivity across the visual spectrum, while a dielectric overcoat seals the silver layer, protecting it from environmental degradation and allowing for safe, gentle cleaning for a lifetime of use.\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 T-2 (M42x0.75) System: A Compact, Direct-Threaded Connection\u003c\/h3\u003e\n\u003cp\u003eUnlike diagonals that rely on standard 1.25\" or 2\" barrels, the Baader T-2 Prism uses the Astro T-2 (M42x0.75) thread system on both its input and output faces. This design philosophy offers two key advantages: an ultra-short optical path and unparalleled system modularity. The direct-threaded connection eliminates any potential for tilt or flexure that can occur with slip-fit or compression ring holders.\u003c\/p\u003e\n\u003cp\u003eThis compact, threaded body is the core of a completely customizable system. By choosing from Baader's extensive line of T-2 adapters, you can configure the diagonal for any telescope's focuser and connect any eyepiece, camera, or binoviewer with minimal added length—a critical factor for telescopes with limited back focus, such as Newtonian reflectors or refractors with focal reducers.\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 T-2 Prism vs. Standard 1.25\" Mirror Diagonals\u003c\/h3\u003e\n\u003cp\u003eWhile a quality mirror diagonal offers excellent views, the Baader T-2 Prism provides a distinct set of advantages for the critical observer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror Diagonal Advantage:\u003c\/strong\u003e A dielectric mirror diagonal is perfectly achromatic and introduces zero false color, making it an excellent choice for very fast (f\/5 or below) refractors where a prism can introduce a tiny amount of chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaader Prism Advantage:\u003c\/strong\u003e The sealed prism surface cannot degrade over time like an exposed mirror coating can. Prisms typically exhibit less light scatter than mirrors, leading to slightly higher contrast on bright objects like the Moon and planets. Most importantly, the T-2 threaded system provides a secure, perfectly orthogonal connection that a standard 1.25\" slip-fit diagonal cannot guarantee.\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 advantage of the Baader T-2 Prism Diagonal's threaded connection?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-2 (M42x0.75) threaded connections on both sides create a solid, flex-free optical train. Unlike standard slip-fit diagonals that can tilt slightly in the focuser, the threaded system ensures perfect alignment and orthogonality, which is critical for high-resolution imaging and visual observation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Baader T-2 Prism Diagonal work with my Schmidt-Cassegrain Telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is an excellent choice for an SCT. You will need the appropriate T-2 adapters to connect it to your telescope's rear cell (typically a T-2 to SCT thread adapter) and a T-2 eyepiece holder (like the Baader ClickLock) for your eyepieces. The short optical path of the prism body helps conserve precious back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy choose the Baader T-2 Prism over a mirror diagonal for viewing Jupiter on my refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor planetary viewing on most refractors (f\/6 and slower), a high-quality prism often delivers superior contrast. The prism's lower light scatter can make subtle details in Jupiter's cloud belts or the Cassini Division in Saturn's rings appear more distinct. The rigid T-2 connection also prevents any image shift when focusing at high power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are Baader's BBHS® coatings on this T-2 Star Diagonal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eBBHS®\u003c\/strong\u003e stands for Broadband Hard Silver. It's a multi-layer coating system where a layer of silver provides very high reflectivity across the entire visual spectrum. This silver layer is then protected by a hard, transparent dielectric coating, making it as durable and easy to clean as a standard dielectric mirror while retaining silver's high reflectance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters do I need to use the Baader T-2 Prism Diagonal with 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo use standard 1.25\" eyepieces, you will need a T-2 eyepiece holder. Baader offers several options, with the most popular being the \u003cstrong\u003eT-2 \/ 1.25\" ClickLock Eyepiece Clamp (#2458100)\u003c\/strong\u003e. This threads directly onto the output side of the prism diagonal and provides a secure, self-centering clamp for your eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Baader Zeiss-spec prism introduce any color error?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAll prisms introduce a minuscule amount of chromatic aberration, as light passes through the glass. In telescopes with focal ratios of f\/7 or slower, this effect is completely negligible and invisible. In very fast refractors (f\/5 or faster), a trace of false color may be detectable by the most critical observers on extremely bright targets, in which case a high-quality dielectric mirror diagonal might be preferred.\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\u003e0.18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeflection angle\u003c\/td\u003e\n\u003ctd\u003e90°\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\u003eno clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter \/ Clear Aperture (mm)\u003c\/td\u003e\n\u003ctd\u003e34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e38.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eStar Diagonal 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\u003eSealed BBHS coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlas path\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\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_Astro_T-2_System_Connections_Overview.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 Astro T-2 System Connections Overview\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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_Astro_T-2_System_Parts_List.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 Astro T-2 System Parts List\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":44967301710109,"sku":"BAA-2456095","price":354.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Baader-Star-Diagonal-Prism-with-Zeiss-Spec-Prism-BBHS-Coating-T-2-1__34003.1597110557.1280.1280.jpg?v=1684340260"},{"product_id":"baader-90-prism-diagonal-w-32mm-prism-t-2","title":"Baader 90° Prism Diagonal w\/ 32mm Prism - T-2","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e90° comfortable viewing angle\u003c\/li\u003e\n\u003cli\u003eLarge 32mm prism for full field illumination\u003c\/li\u003e\n\u003cli\u003eBaader T-2 thread system for modular connections\u003c\/li\u003e\n\u003cli\u003eMaxbright-series prism for high-contrast images\u003c\/li\u003e\n\u003cli\u003eOptimized for planetary and lunar observing with refractors\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 90° Prism Diagonal w\/ 32mm Prism - T-2\u003c\/h2\u003e\n\u003cp\u003eThe Baader 90° Prism Diagonal is built around a substantial 32mm prism, providing a full-aperture light path for T-2 system components. This 90° diagonal is designed for maximum modularity, offering T-2 threads on both the telescope and eyepiece sides to create a completely rigid, flexure-free optical 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\u003eThe 32mm Prism: High-Contrast Views for Refractors\u003c\/h3\u003e\n\u003cp\u003eThis diagonal's core is a precision-polished 32mm prism. Unlike mirror diagonals that can develop scatter-inducing micro-scratches over time, a prism's hypotenuse surface is protected, delivering consistently high-contrast views ideal for resolving fine detail on Jupiter's cloud bands, Saturn's rings, and lunar crater walls. The generous 32mm size ensures that the light cone from the telescope passes through without vignetting, fully illuminating the field of view of most 1.25\" eyepieces.\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\u003eT-2 System Modularity: Build Your Ideal Optical Train\u003c\/h3\u003e\n\u003cp\u003eThe true power of this diagonal lies in its integration with the Baader T-2 Astro System. With female T-2 threads on both the input and output faces, you can directly attach a vast range of adapters. This allows you to build a custom, rock-solid imaging or visual setup, eliminating the alignment issues and potential tilt common with standard slip-fit diagonals. You can configure it with a 1.25\" ClickLock eyepiece clamp, a 2\" nosepiece, or connect it directly to T-2 threaded flatteners and cameras.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e This is a core system component. To use it, you must purchase the appropriate T-2 nosepiece for your focuser and a T-2 eyepiece holder (such as a ClickLock or standard clamp) separately.\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\u003ePrism vs. Mirror: Choosing the Right 90° Diagonal\u003c\/h3\u003e\n\u003cp\u003eChoosing between a prism and a mirror diagonal depends on your telescope and primary observing targets. While both provide a 90° viewing angle, their optical properties differ.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror Diagonals:\u003c\/strong\u003e A high-quality dielectric mirror offers slightly higher light transmission and superior color correction, making it a better choice for fast refractors (f\/7 or faster) and for deep-sky observing where every photon counts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrism Diagonals:\u003c\/strong\u003e This Baader 32mm prism excels at reducing light scatter, which measurably increases image contrast. This makes subtle planetary and lunar details pop. While it can introduce a negligible amount of chromatic aberration in very fast systems, its performance in f\/8 or slower refractors is often considered superior for high-magnification targets.\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 advantage of the Baader T-2 Prism Diagonal's thread system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBaader T-2 thread system\u003c\/strong\u003e allows you to create a completely modular and rigid connection between your telescope, diagonal, and eyepiece or camera. This eliminates the potential for tilt, sag, or poor alignment that can occur with standard 1.25\" or 2\" slip-fit accessories, which is critical for imaging and high-magnification visual work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader 90° Prism Diagonal work with my 2\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but it requires the correct adapters, which are sold separately. To connect the \u003cstrong\u003eBaader T-2 Prism Diagonal\u003c\/strong\u003e to a 2\" focuser, you will need a Baader T-2 to 2\" nosepiece. On the other side, you will need a T-2 compatible eyepiece holder, such as a Baader 1.25\" ClickLock clamp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a 32mm prism diagonal better than a mirror diagonal for my refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt depends on your telescope's focal ratio and your targets. For \u003cstrong\u003eslower refractors (f\/8 and longer)\u003c\/strong\u003e and high-magnification viewing of the Moon and planets, a prism diagonal like this Baader 32mm model often provides higher contrast. For \u003cstrong\u003efaster refractors (f\/7 and shorter)\u003c\/strong\u003e or deep-sky observing, a quality dielectric mirror diagonal is typically preferred for its higher light transmission and better color correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader T-2 90° diagonal for imaging Jupiter with my 100mm f\/9 refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. That is an ideal application for this diagonal. The high-contrast view delivered by the \u003cstrong\u003e32mm prism\u003c\/strong\u003e will help resolve fine details in Jupiter's cloud belts and the Great Red Spot. The rigid T-2 connections will also ensure your planetary camera remains perfectly aligned with the optical axis, free from tilt or flexure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does this Baader diagonal use a 32mm prism instead of a mirror?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA prism is used to maximize image contrast by minimizing light scatter. The internal reflection surface is perfectly smooth and protected from environmental degradation. This makes the \u003cstrong\u003eBaader 90° Prism Diagonal\u003c\/strong\u003e an excellent choice for observers who prioritize the sharpest possible views of bright objects like the Moon, planets, and double stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader 32mm Prism Diagonal vignette with a Tele Vue 24mm Panoptic eyepiece?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e32mm prism\u003c\/strong\u003e provides a very large clear aperture designed to fully illuminate the field stops of nearly all 1.25\" eyepieces, including wide-field designs like the 24mm Panoptic. When properly adapted within the T-2 system, you should not experience any significant vignetting caused by the diagonal itself.\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\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eBaader 90° Prism Diagonal w\/ 32mm Prism - T-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagonal Angle\u003c\/td\u003e\n\u003ctd\u003e90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Size\u003c\/td\u003e\n\u003ctd\u003e32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eFemale T-2 Thread (M42 x 0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Connection\u003c\/td\u003e\n\u003ctd\u003eFemale T-2 Thread (M42 x 0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMaxbright\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.13\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\u003eno clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical length (mm)\u003c\/td\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eStar Diagonal 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\u003eTotal reflection\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 90° T-2 Prism Diagonal Body\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003eNote: Nosepiece and eyepiece holder sold separately.\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_Astro_T-2_System_Connections_Overview.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 Astro T-2 System Connections Overview\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_Star_Diagonals_T-2_and_2in_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 Star Diagonals T-2 and 2in 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_Astro_T-2_System_Parts_List.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 Astro T-2 System Parts List\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":44967301742877,"sku":"BAA-2456005","price":161.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-90-degree-Prism-Diagonal-with-32mm-Prism-T-2-1__01419.1597110560.1280.1280.jpg?v=1684340263"},{"product_id":"baader-microstage-ii-digiscoping-adapter","title":"Baader Microstage II Digiscoping Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables afocal projection imaging with compact digital cameras\u003c\/li\u003e\n\u003cli\u003eClickstop swing-away arm for rapid switching between viewing and imaging\u003c\/li\u003e\n\u003cli\u003eBroad eyepiece clamp provides a secure, non-marring grip on eyepieces\u003c\/li\u003e\n\u003cli\u003eMulti-axis adjustment for precise camera-to-eyepiece alignment\u003c\/li\u003e\n\u003cli\u003eRobust metal construction supports cameras up to 1 kg\u003c\/li\u003e\n\u003cli\u003eFolds into a compact form for easy transport\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 Microstage II Digiscoping Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Baader Microstage II Digiscoping Adapter is a precision-engineered tool for afocal projection imaging, allowing you to capture high-quality images through the eyepiece of your telescope, spotting scope, or binoculars with a compact camera. Its key innovation is a swing-away arm with repeatable click-stops, letting you instantly switch from visually locating a target to capturing it with your camera without losing alignment. Built to a standard that generic clones cannot match, the Microstage II provides the stability and precise adjustment needed to support a camera securely and achieve perfectly centered, vignette-free images.\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\u003ePrecise Afocal Alignment for Digiscoping\u003c\/h3\u003e\n\u003cp\u003eSuccessful digiscoping depends on perfect alignment between the camera lens and the eyepiece. The Microstage II provides multi-axis adjustment, allowing you to center the camera's optical axis precisely behind the eyepiece. This eliminates the clipped, shadowed images common with handheld attempts or flimsy brackets. By positioning the camera lens as close as possible to the eyepiece without touching, you can use your camera's full sensor and minimize vignetting, even with eyepieces that produce a large exit pupil.\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\u003eClickstop Swing-Away Arm: Instantly Switch Between Eye and Camera\u003c\/h3\u003e\n\u003cp\u003eUnlike fixed brackets that force you to compose shots using only the camera's screen, the Microstage II features a sturdy, articulated arm. This design allows you to swing the entire camera assembly away from the eyepiece to observe visually, then swing it back into the exact same position to take the shot. The arm locks into place with repeatable click-stops, ensuring your alignment is preserved every time. This is invaluable for nature observers, hunters, or astronomers who need to visually confirm their target before documenting 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\u003eEngineered for Stability: Why the Microstage II Outperforms Clones\u003c\/h3\u003e\n\u003cp\u003eWhile cheaper adapters exist, they fail in critical areas of stability and grip. The Microstage II is designed to overcome these flaws with superior German engineering. Its robust construction ensures it can hold your camera without flexing or slipping, protecting both your camera and your eyepiece from damage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Eyepiece Clamp:\u003c\/strong\u003e A wide, rubber-lined clamp distributes pressure evenly, gripping eyepieces with diameters from 29mm to 63mm securely without marring the barrel—a common failure point of narrow-clamped copies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorsion-Free Support:\u003c\/strong\u003e The frame is designed to hold cameras weighing up to 1 kg without bending, preventing the optical axis from shifting under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth, Reliable Adjustments:\u003c\/strong\u003e High-quality bushings and double-spring stops provide smooth, precise motion that locks in place, a stark contrast to the sloppy and unreliable mechanisms of generic alternatives.\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 Baader Microstage II used for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBaader Microstage II\u003c\/strong\u003e is a digiscoping adapter designed for \"afocal projection.\" It securely holds a compact digital camera (one with a fixed lens) in perfect alignment with the eyepiece of a telescope, spotting scope, or binocular, allowing you to take photographs of what you see through the eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the swing-away arm on the Microstage II improve usability?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe swing-away arm is the key feature of the \u003cstrong\u003eBaader Microstage II\u003c\/strong\u003e. It allows you to move your camera away from the eyepiece to look through it visually, then swing the camera back into the exact same pre-aligned position to capture an image. This is much faster and more convenient than fixed brackets, which require you to compose your shot using only the camera's small screen.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the Baader Microstage II better than cheaper adapters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBaader Microstage II\u003c\/strong\u003e is built with much higher precision and stronger materials. Key differences include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA wider, more secure eyepiece clamp that won't bend or damage your eyepiece.\u003c\/li\u003e\n\u003cli\u003eA stronger frame that supports heavier cameras without flexing.\u003c\/li\u003e\n\u003cli\u003eSmoother, more reliable adjustment mechanisms with repeatable click-stops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese features prevent image shift, protect your equipment, and make the entire process of digiscoping easier and more successful.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader Microstage II to photograph birds with my spotting scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The \u003cstrong\u003eBaader Microstage II\u003c\/strong\u003e is ideal for nature photography and birding with a spotting scope. The swing-away arm allows you to quickly spot a bird visually, then instantly position your camera to capture a detailed shot without fumbling with alignment and potentially scaring the subject away.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader Microstage II work with my telescope to image the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The \u003cstrong\u003eBaader Microstage II\u003c\/strong\u003e is an excellent tool for lunar photography through a telescope. It provides the stable, precise alignment needed to get a sharp, full-disc image of the Moon. You can use a low-power eyepiece for a wide view or a higher-power one to capture close-ups of specific craters like Copernicus or Tycho.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I avoid getting dark corners (vignetting) in my images with the Microstage II?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eVignetting is minimized by precise alignment. Use the adjustments on the \u003cstrong\u003eBaader Microstage II\u003c\/strong\u003e to center your camera lens perfectly on the eyepiece's exit pupil. Also, position the camera lens as close to the eyepiece glass as possible without them touching. Using eyepieces that have a large exit pupil can also help ensure the camera's sensor is fully illuminated.\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\u003e0.25\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\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":44967308296477,"sku":"BAA-2450330","price":81.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Microstage-II-Digiscoping-Adapter-1__32140.1597110599.1280.1280.jpg?v=1684340155"},{"product_id":"baader-2-25x-q-barlow-1-25","title":"Baader 2.25x Q-Barlow - 1.25\"","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides 2.25x magnification in its standard 1.25\" housing\u003c\/li\u003e\n\u003cli\u003eLens element unscrews for ~1.3x magnification when threaded directly into an eyepiece\u003c\/li\u003e\n\u003cli\u003eFeatures M28.5 filter threads for direct connection to eyepieces and camera nosepieces\u003c\/li\u003e\n\u003cli\u003eDelivers a 25mm vignetting-free image circle at 2.25x magnification\u003c\/li\u003e\n\u003cli\u003eHT-multicoated optics made from exotic glasses for maximum contrast\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 2.25x Q-Barlow - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Baader 2.25x Q-Barlow offers a unique dual-magnification design in a compact 1.25\" format, providing a 2.25x factor in its housing and a lower ~1.3x factor when the lens element is threaded directly into an eyepiece via its M28.5 threads. Its HT-multicoated optics deliver a sharp, 25mm illuminated field perfect for planetary cameras, providing a magnification step that avoids duplication with common eyepiece sets.\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-Mode Magnification: A 2.25x Barlow with a 1.3x Direct-Thread Option\u003c\/h3\u003e\n\u003cp\u003eThe core of the Q-Barlow's design is its two-part construction. Used as a complete unit, it functions as a high-quality 2.25x Barlow lens. However, the optical element itself can be unscrewed from the 1.25\" barrel and threaded directly into any eyepiece or camera nosepiece with a standard M28.5 (1.25\") filter thread.\u003c\/p\u003e\n\u003cp\u003eThis direct-thread configuration reduces the distance between the Barlow lens and the focal plane, lowering the magnification to approximately 1.3x. This gives you two distinct magnification factors from a single accessory, ideal for fine-tuning your image scale for planetary imaging or visual use without swapping hardware.\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\u003eHT-Multicoated Optics: A 25mm Image Circle for Planetary Cameras\u003c\/h3\u003e\n\u003cp\u003eConstructed from exotic glasses with Baader's Phantom Group Coating, the Q-Barlow is engineered for high-contrast, high-resolution views. In its primary 2.25x configuration, it provides a fully illuminated, vignetting-free image circle of 25mm, more than enough to cover the sensors of popular planetary and guide cameras.\u003c\/p\u003e\n\u003cp\u003eWhen used in the 1.3x direct-thread mode, the illuminated circle is 13mm, which remains well-suited for smaller-chip planetary cameras. This optical precision ensures that you are capturing the finest possible detail on Jupiter's cloud bands or the Cassini Division in Saturn's rings.\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\u003eBeyond 2x: The Advantage of a 2.25x Magnification Factor\u003c\/h3\u003e\n\u003cp\u003eThe specific 2.25x magnification was chosen to integrate seamlessly with eyepiece sets like the Baader Q-Turret, providing useful magnification steps without creating redundant focal lengths that a standard 2x Barlow might. For imagers, this slight increase over 2x can be critical for achieving the optimal image scale (arc-seconds per pixel) needed to fully resolve planetary detail with a given telescope and camera combination.\u003c\/p\u003e\n\u003cp\u003eThis makes the Q-Barlow a more strategic choice than a generic 2x Barlow. It allows you to precisely match your camera's sensor resolution to your telescope's focal length, ensuring you capture all the detail your optics can deliver without being over or under-sampled.\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 1.3x magnification from the Baader Q-Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo achieve the lower magnification, you simply unscrew the black lens cell from the bottom of the silver 1.25\" barrel. This lens cell has a male \u003cstrong\u003eM28.5 thread\u003c\/strong\u003e, which is the standard for 1.25\" filters. You can then thread it directly into the barrel of an eyepiece or a camera's 1.25\" nosepiece.\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 the Baader Q-Barlow's 2.25x magnification for planetary imaging on an SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn a long focal-ratio telescope like a Schmidt-Cassegrain, the 2.25x factor often provides the ideal image scale for modern planetary cameras with small pixels. A standard 2x Barlow might leave the image slightly under-sampled, while a 3x can be too much magnification for average seeing conditions. The 2.25x factor hits a sweet spot, allowing you to capture maximum detail on planets like Jupiter and Saturn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Baader 2.25x Q-Barlow vignette with my wide-field 1.25\" eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIn its 2.25x configuration, the Q-Barlow provides a generous \u003cstrong\u003e25mm illuminated field\u003c\/strong\u003e, which is large enough to avoid vignetting with most 1.25\" eyepieces, including Plössls and Orthoscopics. In the 1.3x direct-thread mode, the illuminated field is smaller at 13mm, which may cause some vignetting on very long focal length or wide-field 1.25\" eyepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader Q-Barlow for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While it is optimized for imaging, the high-quality, HT-multicoated optics make it an excellent visual Barlow. The dual-magnification feature is particularly useful for visual observers, effectively doubling the number of magnifications available from your eyepiece collection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy was the Baader 2.25x Q-Barlow designed for the Q-Turret eyepiece set?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 2.25x magnification factor was specifically calculated to complement the focal lengths of the Baader Classic Ortho\/Plössl eyepieces included in the Q-Turret set. Using a standard 2x Barlow would result in magnifications that are too close to the next eyepiece in the series. The 2.25x factor creates a more evenly spaced and useful set of magnifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"HT-multicoated\" mean for the Baader Q-Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eHT stands for \"High Transmission.\" The Baader 2.25x Q-Barlow uses Baader's Phantom Group Coating on all air-to-glass surfaces. This advanced multi-layer coating process maximizes light throughput and minimizes reflections, resulting in brighter images with higher contrast, which is crucial for discerning subtle details on planetary surfaces.\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 (Standard)\u003c\/td\u003e\n\u003ctd\u003e2.25x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification (Direct-Thread)\u003c\/td\u003e\n\u003ctd\u003e~1.3x (varies with distance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Element Thread\u003c\/td\u003e\n\u003ctd\u003eM28.5 Male (Standard 1.25\" Filter Thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Thread\u003c\/td\u003e\n\u003ctd\u003eM28.5 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIlluminated Field (@ 2.25x)\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIlluminated Field (@ 1.3x)\u003c\/td\u003e\n\u003ctd\u003e13 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoatings\u003c\/td\u003e\n\u003ctd\u003eHT-Multicoated (Phantom Group Coating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eBarlow Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.07\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAR-Coating\u003c\/td\u003e\n\u003ctd\u003eHigh transmission multi-coated (HT-MC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping System\u003c\/td\u003e\n\u003ctd\u003eScrew clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 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\"\u003eBaader 2.25x Q-Barlow - 1.25\"\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\"\u003eDust Caps\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\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\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":44967316521245,"sku":"BAA-2956185","price":81.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-2-25x-Q-Barlow-1-25-inch-1__12146.1597110675.1280.1280.jpg?v=1684340466"},{"product_id":"baader-hyperion-zoom-2-25x-barlow","title":"Baader Hyperion Zoom 2.25X Barlow","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e2.25x Primary Magnification Factor\u003c\/li\u003e\n\u003cli\u003eModular Design with 1.3x Low-Power Configuration\u003c\/li\u003e\n\u003cli\u003eIntegrated T-2 Thread for Direct Camera Connection\u003c\/li\u003e\n\u003cli\u003eVariable 2.3x to 2.7x Magnification for Imaging\u003c\/li\u003e\n\u003cli\u003eAttaches via Standard 1.25\" Eyepiece Filter 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\u003eBaader Hyperion Zoom 2.25X Barlow\u003c\/h2\u003e\n\u003cp\u003eThe Baader Hyperion Zoom 2.25X Barlow delivers a primary 2.25x magnification factor, specifically designed to complement the Hyperion Zoom eyepiece but compatible with nearly any 1.25\" eyepiece. Its modular design allows the optical element to be unthreaded for a gentle 1.3x magnification boost, or attached directly to a camera via the T-2 adapter for factors ranging from 2.3x to 2.7x depending on the working distance.\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 2.25x Barlow Optimized for the Hyperion Zoom Eyepiece\u003c\/h3\u003e\n\u003cp\u003eIn its standard configuration, this accessory functions as a high-quality 2.25x Barlow lens. It inserts into a 1.25\" focuser or diagonal and accepts a 1.25\" eyepiece, instantly multiplying its magnification. While it is optically matched to the Baader Hyperion Zoom, its excellent optical quality enhances the view through any standard eyepiece, increasing power for detailed views of planetary surfaces and tight double stars.\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\u003eModular Design: From 1.3x to 2.7x Magnification\u003c\/h3\u003e\n\u003cp\u003eThe Hyperion Zoom Barlow's versatility comes from its multi-part construction. You can unscrew the 13 mm long optical element from the Barlow body and thread it directly into any eyepiece or accessory that has a standard 1.25\" filter thread. This configuration provides a lower, approximate 1.3x magnification factor, perfect for a slight power increase without significantly dimming the image.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Barlow Mode:\u003c\/strong\u003e Provides a fixed 2.25x magnification for visual use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Power Mode:\u003c\/strong\u003e The lens element alone threads into an eyepiece for an approximate 1.3x boost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging Mode:\u003c\/strong\u003e Using the included T-2 adapter, magnification varies from ~2.3x to ~2.7x based on camera distance.\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\u003eT-2 Threading for Planetary Cameras at 25mm to 55mm\u003c\/h3\u003e\n\u003cp\u003eFor astrophotographers, the Hyperion Zoom Barlow includes a T-2 adapter, allowing a direct, secure connection to planetary cameras and DSLRs. This setup is ideal for adapting a modern, small-pixel camera to a long focal length telescope to achieve optimal image scale. The final magnification is dependent on the distance from the Barlow lens to the sensor, providing ~2.3x at a 25mm working distance and ~2.7x at a 55mm distance, giving you fine control over 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\u003eHyperion Zoom Barlow vs. Baader's Zeiss \u0026amp; FFC Barlows\u003c\/h3\u003e\n\u003cp\u003eBaader offers several world-class Barlow lenses, each serving a different purpose. The Hyperion Zoom Barlow is the versatile, high-value option for visual observers and planetary imagers who need flexibility in the lower magnification range.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Baader Zeiss Abbe Barlow:\u003c\/strong\u003e The Zeiss Barlow is a legendary performer in the 2x to 3x range, known for its ultimate sharpness. The Hyperion Zoom Barlow offers greater modularity and multiple magnification factors at a more accessible price point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Baader FFC (Fluorite Flatfield Converter):\u003c\/strong\u003e The FFC is an uncompromising, professional-grade system for extreme magnifications and large-format sensors. The Hyperion Zoom Barlow is the superior choice when a smaller image circle is sufficient and more moderate magnification is desired.\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 Baader Hyperion Zoom 2.25X Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts main purpose is to act as a high-quality \u003cstrong\u003e2.25x Barlow lens\u003c\/strong\u003e, specifically matched to the optical design of the Baader Hyperion Mark IV Zoom eyepiece. However, its modularity makes it a versatile magnification tool for a wide range of eyepieces and cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve the 1.3x magnification with the Hyperion Zoom Barlow?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo get the approximate \u003cstrong\u003e1.3x magnification\u003c\/strong\u003e, you unscrew the lower black optical cell (the lens element) from the silver Barlow tube. You can then thread this cell directly into the 1.25\" filter threads on the barrel of most eyepieces or camera nosepieces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Baader Hyperion Zoom 2.25X Barlow with a camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The Barlow includes a \u003cstrong\u003eT-2 adapter\u003c\/strong\u003e for a secure, threaded connection to most planetary cameras or a DSLR with the appropriate T-ring. This method provides a variable magnification of approximately \u003cstrong\u003e2.3x to 2.7x\u003c\/strong\u003e, depending on the spacing to the camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Hyperion Zoom Barlow work with eyepieces other than the Baader Hyperion Zoom?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While it is optically optimized for the Hyperion Zoom, it functions as an excellent, high-quality Barlow lens with virtually any standard \u003cstrong\u003e1.25\" eyepiece\u003c\/strong\u003e from any manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the Hyperion Zoom Barlow help image Saturn with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn 8\" SCT has a long focal length, but modern planetary cameras have very small pixels. To avoid undersampling and capture fine detail in Saturn's rings, you need more magnification. Using the Hyperion Zoom Barlow with its \u003cstrong\u003eT-2 adapter\u003c\/strong\u003e increases the telescope's effective focal length by about \u003cstrong\u003e2.5x\u003c\/strong\u003e, enlarging the planet on the sensor and better matching the telescope's resolution to your camera's pixel size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy telescope has a long focal length. Is the 1.3x mode on the Hyperion Zoom Barlow useful?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003e1.3x configuration\u003c\/strong\u003e is perfect for when you need just a small increase in power. On a long focal length scope aimed at a globular cluster like M13 (Hercules Cluster), the 2.25x factor might make the view too dim or too narrow. The 1.3x mode provides a gentle boost to better resolve stars in the core without sacrificing as much brightness or field of 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\u003eNet weight (kg)\u003c\/td\u003e\n\u003ctd\u003e0.10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification (x)\u003c\/td\u003e\n\u003ctd\u003e2.25\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\u003eBarrel Size (in)\u003c\/td\u003e\n\u003ctd\u003e1¼\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eBarlow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeciality\u003c\/td\u003e\n\u003ctd\u003eBarlow lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM28.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (eyepiece\/-camera-sided)\u003c\/td\u003e\n\u003ctd\u003eM28.5, M42 x 0.75 (T-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eM28.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Connection (lens sided)\u003c\/td\u003e\n\u003ctd\u003eø 1¼\" (31.75 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\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_Hyperion_Universal_Zoom_Mark_IV_Technical_Data.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 Hyperion Universal Zoom Mark IV Technical Data\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_Hyperion_Zoom_Mark_III_Technical_Data.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 Hyperion Zoom Mark III Technical Data\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":44967317111069,"sku":"BAA-2956180","price":194.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader-Hyperion-Zoom-2-25X-Barlow-1__36871.1597110690.1280.1280.jpg?v=1684340489"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/visual-accessories.oembed?page=3","provider":"David Astro","version":"1.0","type":"link"}