{"title":"Imaging Train","description":null,"products":[{"product_id":"celestron-off-axis-guider","title":"Celestron Off-Axis Guider","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eUses a 12.5 mm prism to intercept light from the telescope's optical path\u003c\/li\u003e\n\u003cli\u003eLarge 48mm clear aperture minimizes vignetting\u003c\/li\u003e\n\u003cli\u003e8 mm of travel on the helical focuser ensures precise guide camera focus\u003c\/li\u003e\n\u003cli\u003eIncludes a full set of adapters for SCT\/EdgeHD, M48, and M42 T-thread connections\u003c\/li\u003e\n\u003cli\u003eCorrects for tracking and opto-mechanical errors for pinpoint stars\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 Off-Axis Guider (OAG)\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Off-Axis Guider (OAG) eliminates tracking errors in long-exposure astrophotography by sampling the same light path as your main camera through a generous 48mm clear aperture. Its integrated 12.5 mm prism and 8 mm travel helical focuser work together to locate and sharply focus guide stars without introducing the flexure common with separate guide scopes. Weighing just 18 oz (510 g), it provides a rigid, single-path solution for achieving perfectly round stars, even with long focal length 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\u003eGuiding Through a 48mm Aperture: Eliminating Opto-Mechanical Flexure\u003c\/h3\u003e\n\u003cp\u003eFor long focal length imaging, the most significant source of elongated stars is often not the mount's tracking, but differential flexure between the main telescope and a separate guide scope. The Celestron OAG solves this by using the same optical tube for both imaging and guiding. With a 48mm clear aperture, it passes the full, unvignetted light cone to your main sensor while using an internal prism to pick off a small, peripheral section of the field for your guide camera. Any deviation seen by the guider is the exact same error affecting your main image, ensuring corrections are immediate and precise.\u003c\/p\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 12.5mm Prism Advantage: Finding Brighter Guide Stars\u003c\/h3\u003e\n\u003cp\u003eA common frustration with off-axis guiders is the difficulty of finding a sufficiently bright guide star at the edge of the field. Celestron addresses this with a large 12.5 mm prism that intercepts more light and can be adjusted radially. This allows you to position the prism closer to the better-illuminated center of the light path—just outside your main camera's sensor—dramatically increasing the brightness and availability of usable guide 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\u003e8mm Helical Focuser: Precision Focus without Twisting\u003c\/h3\u003e\n\u003cp\u003eAchieving perfect, simultaneous focus for both the imaging camera and the autoguider is critical. The Celestron OAG incorporates a fixed-orientation helical focuser with 8 mm of travel, allowing you to make exceptionally fine and smooth focus adjustments to the guide camera without altering its orientation. This non-rotating mechanism prevents the guide star from drifting out of the field of view during focusing and ensures your calibration remains valid. The unit includes a complete set of adapters and spacers for SCT\/EdgeHD, M48, and M42 T-thread systems, providing a turnkey solution for most DSLR and dedicated astronomy cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use the Celestron Off-Axis Guider instead of a separate guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary reason is to eliminate \u003cstrong\u003edifferential flexure\u003c\/strong\u003e. A guide scope is a separate telescope with its own mounting rings and focuser, all of which can shift minutely relative to the main telescope as it tracks across the sky. The Celestron OAG uses the main telescope's optics, so any flexure or mirror shift is seen by both the imaging camera and the guide camera simultaneously, allowing the autoguider to correct for it perfectly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I achieve focus with both my imaging camera and the Celestron OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, achieve sharp focus with your main imaging camera through the OAG. Then, without changing the telescope's focus, adjust the OAG's \u003cstrong\u003e8 mm helical focuser\u003c\/strong\u003e until the stars in your guide camera are also sharp. The goal is to make the light path distance from the prism to the guide sensor equal to the distance from the OAG's center to your imaging sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 12.5 mm prism on the Celestron OAG vignette my full-frame camera sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, when properly adjusted. The prism is designed to be positioned just outside the light cone used by the main imaging sensor. The large 48mm clear aperture of the OAG body is sufficient for full-frame sensors, and you can slide the prism stalk radially outwards to ensure it does not cast a shadow on your imaging chip.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat adapters are included with the Celestron Off-Axis Guider?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Celestron OAG comes with a comprehensive set of adapters to fit most common imaging setups. Included are:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSCT\/EdgeHD adapter (female thread to connect to the telescope)\u003c\/li\u003e\n\u003cli\u003eM48 and M42 (T-thread) female adapters for the telescope side\u003c\/li\u003e\n\u003cli\u003eM48 and M42 (T-thread) male adapters for the camera side\u003c\/li\u003e\n\u003cli\u003eThree T-thread extension spacers for achieving the correct back focus\u003c\/li\u003e\n\u003cli\u003eA 1.25\" adapter for the autoguider port\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Celestron OAG suitable for imaging planets like Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, an off-axis guider is not necessary for planetary imaging. Planetary work involves taking thousands of very short exposures (video), where atmospheric turbulence is the main challenge, not mount tracking over long periods. The OAG is specifically designed for long-exposure deep-sky astrophotography of targets like the Andromeda Galaxy (M31) or the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Celestron OAG with my 8\" f\/4 Newtonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, but it can be challenging. Fast optical systems like f\/4 Newtonians have a very limited back focus and a more pronounced coma at the edge of the field, where the OAG prism sits. While the included adapters provide flexibility, you must ensure you have enough inward focuser travel to bring the entire imaging train to focus. The large 12.5 mm prism is a significant advantage here, as it helps find brighter guide stars in the comatic outer 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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e18 oz (510 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e48mm (1.89\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Size\u003c\/td\u003e\n\u003ctd\u003e12.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHelical Focuser Travel\u003c\/td\u003e\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eSCT\/EdgeHD, M48, M42 T-thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eM48, M42 T-thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoguider Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" adapter, M42 T-thread\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\"\u003eOff-Axis Guider 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\"\u003eSCT\/EdgeHD 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\"\u003eM48 Adapter (Female)\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\"\u003eM42 T-thread Adapter (Female)\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\"\u003eM48 Adapter (Male)\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\"\u003eM42 T-thread Adapter (Male)\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\"\u003eT-thread Spacers\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 3\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 Celestron Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967141572893,"sku":"CEL-93648","price":486.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Off-Axis-Guider-93648-1__70325.1594230226.1280.1280.jpg?v=1684337044"},{"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":"celestron-48mm-t-adapter-for-edgehd-9-25-11-and-14","title":"Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects full-frame DSLR and astronomical cameras to EdgeHD 9.25\", 11\", and 14\" telescopes\u003c\/li\u003e\n\u003cli\u003eFeatures a wide M48 x 0.75 thread to eliminate vignetting on large sensors\u003c\/li\u003e\n\u003cli\u003eProvides a larger, unhindered light path compared to standard 42mm adapters\u003c\/li\u003e\n\u003cli\u003eWeighs just 8 oz (226.79 g)\u003c\/li\u003e\n\u003cli\u003eEngineered for a precise 91mm flange distance\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 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”\u003c\/h2\u003e\n\u003cp\u003eThe Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14” is the definitive solution for connecting full-frame cameras to your telescope, using a larger M48 x 0.75 thread to deliver a fully illuminated light path to the sensor. Weighing only 8 oz, this adapter is specifically designed to overcome the vignetting that occurs with standard 42mm adapters on full-frame sensors. It ensures the entire sensor receives the maximum amount of light from the EdgeHD optics.\u003c\/p\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-Frame Illumination: The M48 x 0.75 Advantage\u003c\/h3\u003e\n\u003cp\u003eAs DSLR and dedicated astronomy camera sensors grow larger, the physical aperture of the connecting hardware becomes the limiting factor in image quality. This 48mm T-Adapter provides a significantly larger clear aperture than a standard M42 adapter, preventing the light cone from being truncated before it reaches the sensor. The result is an image free of darkened corners, allowing you to use your full-frame sensor's entire area effectively.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e48mm vs. 42mm T-Adapter: Why the Larger Thread Matters\u003c\/h3\u003e\n\u003cp\u003eThe standard M42 T-Adapter was designed when smaller sensors were the norm. For modern full-frame cameras, its 42mm opening acts as a bottleneck, physically blocking light from reaching the outer edges of the sensor. This Celestron 48mm T-Adapter is the direct upgrade for imagers using full-frame cameras with an EdgeHD 9.25\", 11\", or 14\" optical tube.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Full-Frame Sensors:\u003c\/strong\u003e The 48mm adapter is essential. It allows the unhindered light cone to illuminate the entire sensor, maximizing signal and producing evenly lit frames.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor APS-C Sensors:\u003c\/strong\u003e If you are using a camera with a smaller APS-C sensor, this 48mm adapter offers no advantage. The standard 42mm T-Adapter is sufficient to fully illuminate these smaller chips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Celestron 48mm T-Adapter required for my full-frame camera on an EdgeHD 11\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. To avoid significant vignetting (darkening in the corners of your images), the 48mm T-Adapter is the recommended accessory. A standard 42mm adapter will physically constrict the light path, preventing full illumination of a 35mm-format sensor on an EdgeHD 9.25\", 11\", or 14\" telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this 48mm T-Adapter improve images from my APS-C camera on an EdgeHD 9.25\" scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter will not offer any advantage for smaller APS-C sensors. The light cone from the EdgeHD optics is already large enough to be fully captured by an APS-C sensor through a standard 42mm T-Adapter. You should use the Celestron 42mm T-Adapter (#93646) for APS-C cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between an M42 and an M48 thread on this T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe numbers refer to the diameter of the thread in millimeters. The M48 thread on this adapter has a larger opening than the M42 thread on standard T-adapters. This larger diameter is crucial for passing a wider cone of light to a large, full-frame imaging sensor without obstruction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a special T-Ring for the Celestron 48mm T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you must use a T-Ring with a corresponding M48 x 0.75 thread. Standard 42mm T-Rings are not compatible. While Celestron does not manufacture 48mm T-Rings, they are readily available from other manufacturers for popular camera brands like Canon, Nikon, and Sony.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with my EdgeHD 8\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically designed for the larger rear cells of the EdgeHD 9.25\", 11\", and 14\" models. A different adapter is required for the EdgeHD 8\" optical tube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the total back focus consumed by the 48mm T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter itself does not have a listed back focus consumption, but it is part of the overall imaging train. The critical distance for EdgeHD telescopes is from the rear flange to the sensor, and this adapter is designed to place your camera sensor at the correct distance when used with a standard T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescopes\u003c\/td\u003e\n\u003ctd\u003eEdgeHD 9.25\", 11\", and 14\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eT-Ring Threads\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncompatible T-Rings\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Distance\u003c\/td\u003e\n\u003ctd\u003e91mm (3.58\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd\u003e72mm (2.83\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e8 oz (226.79 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\u003cimg class=\"DAV-img-box\" alt=\"Celestron 48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-48mm-T-Adapter-for-EdgeHD-9.25-11-and-14-1.jpg?v=1782200871\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e48mm T-Adapter for EdgeHD 9.25”, 11”, and 14”\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 Celestron Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/celestron-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eCelestron 2-Year Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":44967180632349,"sku":"CEL-93622","price":104.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-48mm-T-Adapter-for-EdgeHD-9-25-inch-11-inch-and-14-inch-93622-1__72191.1594229451.1280.1280.jpg?v=1684338259"},{"product_id":"celestron-camera-adapter-for-canon-mirrorless-rasa-8","title":"Celestron Camera Adapter for Canon Mirrorless, RASA 8","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAttaches Canon mirrorless cameras to the 8\" RASA\u003c\/li\u003e\n\u003cli\u003eUses the camera's bayonet mount for a secure fit\u003c\/li\u003e\n\u003cli\u003eProvides minimal optical obstruction\u003c\/li\u003e\n\u003cli\u003ePlaces sensor at the correct backfocus distance\u003c\/li\u003e\n\u003cli\u003eDurable and 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\u003eCelestron T-Adapter for Canon Mirrorless, Rowe-Ackermann Schmidt Astrograph (RASA) 8\u003c\/h2\u003e\n\u003cp\u003eThe Celestron T-Adapter for Canon Mirrorless cameras is the essential accessory for connecting your Canon EOS M series camera to the 8” Rowe-Ackermann Schmidt Astrograph (RASA). This adapter ensures a secure, perfectly spaced connection, enabling you to capture spectacular deep-sky astronomical images with your compact, sensitive mirrorless camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Connection and Precise Backfocus for Canon Mirrorless\u003c\/h3\u003e\n\u003cp\u003eThis adapter is engineered specifically for the 8\" RASA and Canon mirrorless cameras. It connects directly to the camera's native bayonet mount, creating a rigid and reliable link to the front of the astrograph. The compact profile of mirrorless cameras provides minimal obstruction for the RASA's optical path, and this adapter maintains that advantage while placing the camera's sensor at the precise backfocus distance needed for edge-to-edge image sharpness.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Celestron T-Adapter compatible with Canon DSLR cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is designed exclusively for \u003cstrong\u003eCanon mirrorless cameras\u003c\/strong\u003e that use the EOS M bayonet mount. It is not compatible with Canon DSLR cameras (EF or EF-S mount) due to differences in mount design and backfocus distance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need a special adapter for the RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Rowe-Ackermann Schmidt Astrograph (RASA) 8 has a prime-focus imaging system where the camera is mounted at the front of the optical tube. This T-Adapter is required to securely attach your camera and place its sensor at the RASA's specific focal plane for sharp, focused images across the entire field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with the 11\" or 36cm RASA models?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this T-Adapter is specifically designed for the \u003cstrong\u003e8\" RASA\u003c\/strong\u003e. The larger RASA models have different mounting threads and backfocus requirements, and require their own dedicated camera adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Celestron T-Adapter for RASA 8 handle obstruction?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter is designed to be as low-profile as possible, complementing the compact body of a Canon mirrorless camera. This combination creates minimal obstruction at the front of the RASA 8, preserving light-gathering capability and image contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of imaging performance can I expect with the RASA 8 and this adapter on the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen using a Canon mirrorless camera with the RASA 8 via this adapter, you can capture the entirety of the Orion Nebula (M42) and its surrounding structures in a single frame. The RASA's fast f\/2 optical system allows for very short exposures, revealing faint nebulosity and fine detail in the Trapezium region with minimal noise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the Celestron T-Adapter for RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter does not have integrated filter threads. To use filters with the RASA 8, you would typically use an optional filter drawer or filter slider that installs between the RASA's lens group and the camera adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\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\"\u003eT-Adapter for Canon Mirrorless, RASA 8\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron_EdgeHD_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\"\u003eDownload RASA Whitepaper\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":44967180697885,"sku":"CEL-93406","price":89.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Camera-Adapter-for-Canon-Mirrorless-Rowe-Ackermann-Schmidt-Astrograph-RASA-8-93406-1__14403.1594230499.1280.1280.jpg?v=1684338262"},{"product_id":"celestron-camera-adapter-for-sony-mirrorless-rasa-8","title":"Celestron Camera Adapter for Sony Mirrorless, RASA 8","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts Sony mirrorless cameras to the Celestron 8\" RASA\u003c\/li\u003e\n\u003cli\u003eUses the camera's bayonet mount for a secure connection\u003c\/li\u003e\n\u003cli\u003eProvides minimal optical obstruction\u003c\/li\u003e\n\u003cli\u003ePlaces the camera sensor at the precise backfocus distance\u003c\/li\u003e\n\u003cli\u003e2-Year Celestron Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCelestron T-Adapter for Sony Mirrorless, Rowe-Ackermann Schmidt Astrograph (RASA) 8\u003c\/h2\u003e\n\u003cp\u003eThis Celestron T-Adapter is the essential component for connecting your Sony mirrorless camera to the 8\" Rowe-Ackermann Schmidt Astrograph (RASA), creating a powerful deep-sky imaging system. The adapter is engineered to place your camera's sensor at the exact backfocus distance required by the RASA 8's optical design, ensuring sharp, focused stars across the entire field of view. It attaches securely to the camera's native bayonet mount, providing a rigid connection with minimal obstruction for optimal image quality.\u003c\/p\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 Essential Link for RASA 8 and Sony Mirrorless\u003c\/h3\u003e\n\u003cp\u003eMirrorless cameras are an ideal match for the RASA 8, combining sensitive imaging sensors with a compact body that minimizes obstruction at the front of the optical tube. This T-Adapter makes that pairing possible, providing a direct, secure attachment between the RASA's front lens group and the camera body. By using the camera's own bayonet mount, the adapter ensures a stable connection that prevents tilt and maintains perfect alignment throughout an imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEngineered for Correct Backfocus on the 8\" RASA\u003c\/h3\u003e\n\u003cp\u003eAchieving the correct backfocus is critical for any astrograph, and the RASA 8 is no exception. This adapter isn't just a physical connector; it's a precisely machined spacer that guarantees your camera's sensor is positioned at the optimal focal plane. This precision eliminates guesswork and ensures your deep-sky images are as sharp and detailed as the RASA's optics can deliver, capturing every photon without compromise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Celestron T-Adapter required to use a Sony mirrorless camera with the RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this adapter is a must-have accessory. It is specifically designed to provide both the physical connection via the Sony bayonet mount and the precise backfocus distance needed for the RASA 8 optical system to achieve sharp focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy are mirrorless cameras a good choice for the RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMirrorless cameras offer two key advantages for the RASA 8. First, their compact and lightweight bodies create minimal obstruction when mounted at the front of the telescope. Second, their highly sensitive imaging sensors are well-suited for capturing the faint details in deep-sky objects that the RASA's fast optical system gathers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this T-Adapter attach to my camera and the RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter attaches directly to your Sony mirrorless camera using its integrated bayonet mount, just like a standard camera lens. The other side of the adapter then threads securely onto the front of the RASA 8 optical tube assembly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with other Celestron telescopes or other camera brands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is designed specifically for the combination of a Sony mirrorless camera and the Celestron 8\" RASA. It will not provide the correct spacing or mounting for other telescopes or different camera brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes using this adapter affect the image quality from my RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed to optimize image quality. By placing the sensor at the correct backfocus distance, it ensures you achieve the maximum sharpness and performance that the RASA 8 optics are capable of delivering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of imaging can I do with a Sony mirrorless camera on my RASA 8?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis combination is ideal for capturing wide-field, deep-sky objects. You can image large nebulae like the Orion Nebula (M42) or the North America Nebula (NGC 7000), as well as broad galaxy clusters and rich star fields, taking full advantage of the RASA's expansive, flat 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\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eCelestron 8\" Rowe-Ackermann Schmidt Astrograph (RASA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eSony Mirrorless (E-mount)\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\"\u003eT-Adapter for Sony Mirrorless, RASA 8\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\/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":44967180763421,"sku":"CEL-93405","price":89.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Camera-Adapter-for-Sony-Mirrorless-Rowe-Ackermann-Schmidt-Astrograph-RASA-8-93405-1__79090.1594230499.1280.1280.jpg?v=1684338265"},{"product_id":"celestron-t-adapter-for-scts","title":"Celestron T-Adapter for SCTs","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely attaches SLR\/DSLR cameras to Schmidt-Cassegrain telescopes\u003c\/li\u003e\n\u003cli\u003eEnables prime focus photography for high-resolution imaging\u003c\/li\u003e\n\u003cli\u003eThreads directly onto the rear cell of SCTs\u003c\/li\u003e\n\u003cli\u003eMetal construction for a rigid, flex-free connection\u003c\/li\u003e\n\u003cli\u003eRequires a camera-specific T-Ring for use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eCelestron T-Adapter for Schmidt-Cassegrain Telescopes\u003c\/h2\u003e\n\u003cp\u003eThe Celestron T-Adapter for Schmidt-Cassegrain Telescopes is the essential accessory for connecting your DSLR or SLR camera directly to your telescope's rear cell, enabling prime focus astrophotography. This all-metal adapter transforms your SCT into a massive telephoto lens, allowing you to use the telescope's native focal length—like 2000mm on an 8” SCT—to capture detailed, high-magnification images of the Moon and other celestial objects. To begin, simply pair the adapter with a T-Ring specific to your camera brand, thread it onto the telescope's rear cell, and attach your camera body for a secure, direct 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\u003ePrime Focus Photography: The Direct Path to Your SCT\u003c\/h3\u003e\n\u003cp\u003eThis T-Adapter is engineered for one purpose: to create the most direct and rigid connection between your camera sensor and your telescope's optical system. By removing the diagonal and visual back, you thread this adapter directly onto your SCT's rear cell. This prime focus configuration bypasses all other accessories, minimizing potential flexure and ensuring the sharpest possible image is projected straight from the telescope's optics onto your camera's sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFrom Telescope to 2000mm Telephoto Lens\u003c\/h3\u003e\n\u003cp\u003eWhen connected via the T-Adapter, your camera uses the telescope as its lens, leveraging its full focal length and light-gathering power. An 8-inch Schmidt-Cassegrain, for example, becomes a powerful 2000mm telephoto lens, dwarfing the capabilities of standard camera lenses. This immense magnification is what allows you to fill the frame with craters on the Moon or capture detailed images of terrestrial subjects at a great 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\u003eShort vs. Long Exposure: Lunar and Deep-Sky Imaging\u003c\/h3\u003e\n\u003cp\u003ePrime focus photography with the T-Adapter is perfectly suited for short-exposure imaging of bright objects. The Moon, planets, and daytime terrestrial targets are ideal subjects. For longer exposures required to capture faint deep-sky objects like nebulae and galaxies, a stable setup is critical. Celestron recommends using an equatorial mount and a separate guidescope or off-axis guider to ensure sharp, star-pointed images during multi-minute exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides the Celestron T-Adapter to connect my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a \u003cstrong\u003eT-Ring\u003c\/strong\u003e that matches your specific camera brand (e.g., Canon EOS or Nikon). The T-Ring attaches to your camera body in place of the lens, and then threads onto the T-Adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the T-Adapter on my Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, remove any accessories from the back of your telescope, such as the diagonal and visual back. Then, screw the Celestron T-Adapter directly onto the large threads of the telescope's rear cell until it is secure. Finally, thread your camera (with T-Ring attached) onto the T-Adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this T-Adapter 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\u003eYes, but it requires a proper setup for long exposures. To photograph faint objects, you will need to mount your SCT on a sturdy equatorial mount and use a guiding system (like an off-axis guider or a separate guidescope) to correct for tracking errors during the exposure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of magnification will I get with the Celestron T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-Adapter itself does not add magnification. It allows your camera to use your telescope's native focal length. For an 8\" SCT with a 2000mm focal length, you are effectively shooting with a 2000mm lens. The final image scale depends on your camera's sensor size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this T-Adapter suitable for imaging the Moon with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This is the ideal method for lunar photography. The long focal length of an 8\" SCT will provide a large, detailed image of the Moon on your camera sensor, allowing you to capture individual craters and mountain ranges with very short exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Celestron T-Adapter work on non-SCT telescopes like refractors or Newtonians?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this T-Adapter is specifically designed with threads that match the rear cell of a Schmidt-Cassegrain telescope. You would need a different type of T-adapter or prime focus adapter for other telescope designs.\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\u003eSchmidt-Cassegrain Telescope Rear Cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eRequires camera-specific T-Ring (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhotography Style\u003c\/td\u003e\n\u003ctd\u003ePrime Focus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eMetal\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\u003cimg class=\"DAV-img-box\" alt=\"Celestron T-Adapter for SCTs\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/93633-a-t-adapter-sct_0.jpg?v=1684313262\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT-Adapter for Schmidt-Cassegrain Telescopes\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\u003eNo downloads are available for this product.\u003c\/p\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":44967180861725,"sku":"CEL-93633-A","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-T-Adapter-for-Schmidt-Cassegrain-Telescopes-93633-A-1__32963.1594230501.1280.1280.jpg?v=1684338274"},{"product_id":"celestron-t-adapter-edgehd-8","title":"Celestron T-Adapter, (EdgeHD 8)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAttaches DSLR cameras to 8\" EdgeHD optical tubes\u003c\/li\u003e\n\u003cli\u003eThreads directly onto the rear cell for a secure connection\u003c\/li\u003e\n\u003cli\u003eEnables prime focus photography for terrestrial, lunar, and planetary imaging\u003c\/li\u003e\n\u003cli\u003eRequired for connecting a camera-specific T-Ring to the telescope\u003c\/li\u003e\n\u003cli\u003eSupports long-exposure deep-sky imaging with a separate guidescope\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 T-Adapter for 8\" EdgeHD\u003c\/h2\u003e\n\u003cp\u003eThis Celestron T-Adapter connects your 35mm DSLR or astronomical camera directly to the prime focus of your 8” EdgeHD optical tube, backed by a 2-year warranty. It threads securely onto the telescope's rear cell, creating a rigid connection essential for sharp terrestrial, lunar, and planetary photography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrime Focus DSLR Astrophotography with 8\" EdgeHD OTAs\u003c\/h3\u003e\n\u003cp\u003eThis T-Adapter is the primary component for attaching a camera to your 8\" EdgeHD telescope. By connecting your camera at the telescope's native focal plane, you can capture high-resolution images of the Moon's craters, planetary details like Jupiter's cloud bands, and sharp terrestrial subjects. For imagers looking to capture deep-sky objects, this adapter facilitates long-exposure photography when the system is guided with a separate guidescope and mount.\u003c\/p\u003e\n\u003cp\u003eTo complete the connection to a DSLR, a camera-brand-specific T-Ring is required. The T-Ring attaches to your camera's bayonet mount on one side and threads onto this T-Adapter on the other, ensuring a secure, all-metal imaging train from the telescope to the sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCelestron 2-Year Warranty Support\u003c\/h3\u003e\n\u003cp\u003eLike all Celestron accessories, this T-Adapter for the 8\" EdgeHD is covered by a 2-year factory warranty. This ensures the adapter is free from defects in materials and workmanship, giving you confidence in the mechanical integrity of your imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides the Celestron T-Adapter to connect my DSLR to an 8\" EdgeHD?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a \u003cstrong\u003eT-Ring\u003c\/strong\u003e specific to your camera's brand (e.g., Canon EOS, Nikon F-mount). The T-Adapter threads onto the telescope's rear cell, and the T-Ring threads onto the T-Adapter, allowing your camera body to securely attach.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this T-Adapter compatible with non-EdgeHD Celestron 8\" SCTs?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically designed for the rear cell thread and back focus requirements of the \u003cstrong\u003e8\" EdgeHD\u003c\/strong\u003e optical tube. Standard Schmidt-Cassegrain telescopes require a different T-adapter, such as the Celestron #93633-A T-Adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Celestron T-Adapter for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is purely for photography. It does not have a holder for eyepieces. For visual use, you would use a standard 1.25\" or 2\" visual back and diagonal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work for imaging Jupiter with my 8\" EdgeHD?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this T-Adapter is perfect for prime-focus planetary imaging. It allows you to attach a high-frame-rate planetary camera or a DSLR (in video crop mode) to capture short exposures of bright targets like Jupiter and Saturn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs a guidescope necessary for taking pictures of the Orion Nebula (M42) with the 8\" EdgeHD and this T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for long-exposure deep-sky photography of objects like the Orion Nebula (M42), a separate guidescope and guide camera are highly recommended. While the adapter provides the physical connection, the long focal length of the 8\" EdgeHD requires precise tracking that only autoguiding can typically provide for exposures longer than about 30 seconds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Celestron T-Adapter for 8\" EdgeHD add any magnification?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter connects your camera at the telescope's prime focus, so it does not alter the native focal length or magnification of your 8\" EdgeHD. The image scale on your sensor is determined solely by the telescope's focal length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eThreads onto 8\" EdgeHD Rear Cell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eMale T-Threads (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescopes\u003c\/td\u003e\n\u003ctd\u003eCelestron 8\" EdgeHD Schmidt-Cassegrain OTAs\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 T-Adapter for 8\" EdgeHD\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Celestron_EdgeHD_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\"\u003eDownload Celestron EdgeHD Optics Whitepaper\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":44967180894493,"sku":"CEL-93644","price":58.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-T-Adapter-EdgeHD-8-93644-1__49172.1594230501.1280.1280.jpg?v=1684338278"},{"product_id":"celestron-t-adapter-edgehd-925-11-14","title":"Celestron T-Adapter, (EdgeHD 925, 11 \u0026 14)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects DSLR cameras to EdgeHD telescopes\u003c\/li\u003e\n\u003cli\u003eDesigned for 9.25\", 11\", and 14\" models\u003c\/li\u003e\n\u003cli\u003eThreads directly to the rear cell for a secure connection\u003c\/li\u003e\n\u003cli\u003eEnables prime focus photography\u003c\/li\u003e\n\u003cli\u003eIdeal for terrestrial, lunar, and planetary 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\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 T-Adapter for EdgeHD 9.25\", 11\" \u0026amp; 14\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron T-Adapter provides the essential threaded connection to attach your 35mm DSLR camera directly to the rear cell of an EdgeHD 9.25\", 11\", or 14\" telescope. This configuration enables prime focus astrophotography, using your telescope's native optics as a massive, high-resolution telephoto lens for capturing detailed images of the Moon, planets, and 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\u003ePrime Focus Connection: The Direct Path for DSLR Imaging on EdgeHD 9.25\", 11\", and 14\" Telescopes\u003c\/h3\u003e\n\u003cp\u003eThis T-Adapter is the simplest and most rigid way to begin imaging with your large EdgeHD optical tube. By threading directly onto the rear cell, it creates a secure, non-flexing link between your telescope and camera, which is critical for maintaining sharp focus. This setup is optimized for short-exposure photography of bright targets where tracking precision is less demanding.\u003c\/p\u003e\n\u003cp\u003eFor long-exposure deep-sky astrophotography of nebulae and galaxies, this prime focus arrangement is still viable, but it requires the use of a separate guidescope and camera to ensure sharp, pinpoint stars. To complete the connection to your camera, you will also need a T-Ring specific to your camera's lens mount (e.g., Canon, Nikon, or Sony), which is sold separately.\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 else do I need to connect my Canon DSLR to my EdgeHD 11\" with this T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a \u003cstrong\u003eT-Ring\u003c\/strong\u003e that matches your camera's specific lens mount. For a Canon DSLR, you would need a Canon EOS T-Ring. The T-Adapter threads onto the telescope, and the T-Ring threads onto the T-Adapter, allowing your camera body to bayonet onto the T-Ring just like a lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this Celestron T-Adapter for deep-sky imaging of the Andromeda Galaxy (M31) with my EdgeHD 9.25\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, you can. However, for long exposures required for faint deep-sky objects like the Andromeda Galaxy (M31), you will need a very precisely polar-aligned equatorial mount and a separate autoguiding system (guidescope and guide camera). This T-Adapter provides the mechanical connection, but successful deep-sky imaging depends on accurate tracking.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Celestron T-Adapter work with an EdgeHD 8\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this model is specifically designed for the larger rear cell threads of the \u003cstrong\u003eEdgeHD 9.25\", 11\", and 14\"\u003c\/strong\u003e models. For an EdgeHD 8\", you will need the Celestron T-Adapter for SCT \u0026amp; EdgeHD 8\" models, which has different threading.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is \"prime focus\" photography with the Celestron T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003ePrime focus\u003c\/strong\u003e means you are using the telescope's main optics to form an image directly onto your camera's sensor, with no eyepiece or other lens in between. This T-Adapter positions your DSLR at the telescope's focal plane, effectively turning your EdgeHD into a giant telephoto lens with its native focal length and f-ratio.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this T-Adapter good for high-magnification planetary imaging with my EdgeHD 14\"?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is best for wide-field shots of the Moon or capturing the full disk of Jupiter and Saturn. For high-magnification planetary imaging, you would typically use a high-frame-rate planetary camera and a Barlow lens to increase the effective focal length, rather than a DSLR at prime focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy can't I use a generic T-Adapter with my large EdgeHD telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Celestron EdgeHD 9.25\", 11\", and 14\" telescopes use a large-format 3.29\" rear cell thread for maximum stability and to prevent vignetting. Standard \"SCT\" T-adapters use a smaller 2\" thread. This adapter is specifically machined to match the larger threads on these optical tubes, ensuring a secure and correctly spaced connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\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":44967180960029,"sku":"CEL-93646","price":104.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-T-Adapter-EdgeHD-925-11-14-93646-1__64064.1643832166.1280.1280.jpg?v=1684338166"},{"product_id":"celestron-t-adapter-nexstar-4se","title":"Celestron T-Adapter, NexStar 4SE","description":"\u003cul class=\"DAV-feature-list\"\u003e\n  \u003cli\u003eConnects DSLR and SLR cameras to NexStar 4SE or C90 telescopes\u003c\/li\u003e\n  \u003cli\u003eEnables prime focus photography for celestial and terrestrial objects\u003c\/li\u003e\n  \u003cli\u003eThreads directly onto the telescope's rear cell for a secure fit\u003c\/li\u003e\n  \u003cli\u003eSturdy, single-piece aluminum 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\u003eCelestron T-Adapter, NexStar 4SE\u003c\/h2\u003e\n          \u003cp\u003eThis sturdy aluminum Celestron T-Adapter for the NexStar 4SE is the essential accessory for attaching your SLR or DSLR camera to a Celestron NexStar 4SE telescope or C90 spotting scope. It allows you to use your telescope as a powerful telephoto lens, enabling prime focus photography of the Moon, planets, and terrestrial subjects. The adapter provides a secure, direct-threaded connection between your telescope and the camera-specific T-Ring, ensuring a stable imaging platform.\u003c\/p\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-Thread Attachment for NexStar 4SE \u0026amp; C90 Scopes\u003c\/h3\u003e\n          \u003cp\u003eDesigned specifically for the smaller rear cell threads of the NexStar 4SE Maksutov-Cassegrain and the C90 spotting scope, this T-Adapter ensures a perfect fit. Unlike universal adapters that can introduce flexure or vignetting, this component threads directly onto your scope's rear cell, creating a rigid connection that is critical for sharp, prime-focus 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\u003eA Simple, Secure All-Metal Connection for Your Camera\u003c\/h3\u003e\n          \u003cp\u003eGetting started is straightforward. After removing the lens from your DSLR or SLR, attach the appropriate T-Ring for your camera brand (sold separately). The T-Adapter then screws onto the rear of your telescope, and the T-Ring with your camera attached threads directly onto the adapter. The result is an all-metal, secure imaging train with no weak points.\u003c\/p\u003e\n          \u003cul\u003e\n            \u003cli\u003e\n\u003cstrong\u003eSturdy Aluminum Body:\u003c\/strong\u003e A single piece of machined aluminum prevents any flexure or wobble that could compromise your images.\u003c\/li\u003e\n            \u003cli\u003e\n\u003cstrong\u003eSimple Installation:\u003c\/strong\u003e Just remove any existing visual back or accessory, screw on the T-Adapter, and then attach your camera and T-Ring.\u003c\/li\u003e\n            \u003cli\u003e\n\u003cstrong\u003eRequired T-Ring:\u003c\/strong\u003e You will need a T-Ring that matches your camera's lens mount (e.g., Canon EOS or Nikon F-mount) to complete the connection.\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\u003ePrime Focus Imaging: Turn Your NexStar 4SE into a 1325mm Telephoto Lens\u003c\/h3\u003e\n          \u003cp\u003ePrime focus photography places your camera's sensor directly at the telescope's focal plane, using the main optics as your camera lens. This method is ideal for capturing detailed, short-exposure images of bright objects. With the NexStar 4SE's long focal length, you can achieve high-magnification shots that are impossible with standard camera lenses.\u003c\/p\u003e\n          \u003cp\u003eThis setup excels for capturing sharp craters on the Moon, distant wildlife, or other terrestrial scenes. The direct connection maximizes light transmission and image contrast, delivering results that are limited only by the seeing conditions and your camera's capabilities.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need to attach my Canon DSLR to a NexStar 4SE with this T-Adapter?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eYou will need this Celestron T-Adapter for the NexStar 4SE and a separate T-Ring for Canon EOS cameras (model #93419). The T-Ring attaches to your camera body in place of the lens, and then it threads onto this T-Adapter.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the NexStar 4SE T-Adapter to photograph the Moon?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eFirst, attach your camera to the telescope using the T-Adapter and a T-Ring. Point the telescope at the Moon and achieve a rough focus using the telescope's focuser while viewing through your camera's live view screen. For the sharpest results, use your camera's digital zoom on live view to fine-tune the focus on a prominent crater before taking short-exposure images.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Celestron T-Adapter compatible with larger Celestron SCTs like an 8\"?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eNo, this T-Adapter is specifically designed for the smaller rear cell threads found on the NexStar 4SE and the C90 Spotting Scope. Larger Schmidt-Cassegrain telescopes require a different T-Adapter that fits the standard 2\" SCT rear cell threads.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use eyepieces with the NexStar 4SE T-Adapter for higher magnification?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eNo, this adapter is for prime focus photography only, where the telescope acts as the lens. It does not allow for eyepiece projection. For that, you would need a different type of universal or variable projection adapter.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of photography is the Celestron T-Adapter for NexStar 4SE best for?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eIt is ideal for short-exposure photography of bright subjects. This includes detailed images of the lunar surface, planetary shots (though this is challenging), and terrestrial subjects like wildlife or distant landscapes. It is not intended for long-exposure deep-sky astrophotography.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n      \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the T-Adapter for the NexStar 4SE made of plastic or metal?\u003c\/h3\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion-A\"\u003e\n      \u003cp\u003eThe T-Adapter is made from sturdy, machined aluminum to provide a rigid, flex-free connection between your telescope and camera, ensuring your images are as sharp as possible.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003ctable class=\"DAV-specifications\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCompatibility\u003c\/td\u003e\n          \u003ctd\u003eCelestron NexStar 4SE Telescope, C90 Spotting Scope\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCamera Connection\u003c\/td\u003e\n          \u003ctd\u003eRequires camera-specific T-Ring (sold separately)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eTelescope Connection\u003c\/td\u003e\n          \u003ctd\u003eThreads onto rear cell of NexStar 4SE \/ C90\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003ePhotography Type\u003c\/td\u003e\n          \u003ctd\u003ePrime Focus\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMaterial\u003c\/td\u003e\n          \u003ctd\u003eAluminum\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\"\u003eT-Adapter for NexStar 4SE \/ C90\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\/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":44967180992797,"sku":"CEL-93635-A","price":49.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-T-Adapter-NexStar-4SE-93635-A-1__91481.1594230502.1280.1280.jpg?v=1684338170"},{"product_id":"celestron-t-ring-for-canon-eos-camera","title":"Celestron T-Ring for Canon EOS Camera","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EOS-EF Mount DSLR\/Mirrorless cameras to telescopes\u003c\/li\u003e\n\u003cli\u003eReplaces the camera lens for direct, secure attachment\u003c\/li\u003e\n\u003cli\u003eEnables prime focus astrophotography through your telescope\u003c\/li\u003e\n\u003cli\u003eStandard T-threads accept a wide variety of telescope T-adapters\u003c\/li\u003e\n\u003cli\u003eRequired for imaging the Moon, planets, and deep-sky objects\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 T-Ring for Canon EOS-EF Mount Camera\u003c\/h2\u003e\n\u003cp\u003eThe Celestron T-Ring for Canon EOS-EF Mount Cameras is the foundational accessory for connecting your camera body directly to a telescope, enabling you to capture high-resolution images of the Moon, planets, and deep-sky objects. This T-Ring securely replaces your standard camera lens, converting your Canon EOS camera body into an interchangeable imaging system for your telescope with 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\u003eThe Essential Adapter for Canon EOS Astrophotography\u003c\/h3\u003e\n\u003cp\u003eIf you own a Canon EOS camera, this T-Ring is the first and most critical component for prime focus astrophotography. By attaching it in place of a camera lens, you create a solid, threaded connection point. This allows your telescope to function as a massive telephoto lens, projecting its image directly onto your camera's sensor for the cleanest possible signal 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\u003eChoosing the Right T-Adapter for Your Telescope\u003c\/h3\u003e\n\u003cp\u003eOnce the T-Ring is on your camera, the telescope side features standard T-threads that connect to a separate T-adapter (sold separately). The correct T-adapter depends entirely on your telescope's design, as different optical systems have unique requirements for reaching focus.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSchmidt-Cassegrain Telescopes (SCTs):\u003c\/strong\u003e For standard Celestron SCTs, the #93633-A T-Adapter threads directly onto the rear cell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefractors \u0026amp; Spotting Scopes:\u003c\/strong\u003e The Universal T-Adapter (#93625) with its 1.25” barrel is the standard choice for these instruments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEdgeHD Optical Systems:\u003c\/strong\u003e These flat-field systems require specific T-adapters to maintain their optical correction, such as the #93644 for the 8-inch EdgeHD or the #93646 for the 9.25, 11, and 14-inch models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the Celestron T-Ring for Canon cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-Ring is a mechanical adapter that allows you to attach your Canon EOS camera body to a telescope. It replaces your camera's lens and provides a standardized threaded connection (called a T-thread) that can then be attached to a telescope-specific T-adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need anything besides this T-Ring to connect my Canon EOS to my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The T-Ring is the first part of a two-part system. You will also need a T-adapter that matches your specific telescope (e.g., an SCT T-adapter, an EdgeHD T-adapter, or a universal 1.25\" T-adapter for refractors). The T-Ring attaches to your camera, and the T-adapter attaches to the T-Ring and your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I use the Celestron T-Ring to photograph the Orion Nebula (M42) with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, remove the lens from your Canon EOS camera and attach the T-Ring. Then, thread the Celestron #93633-A T-Adapter for SCTs onto the T-Ring. Finally, unthread the visual back from your telescope's rear cell and screw the T-adapter\/T-Ring\/camera assembly directly onto the telescope. You are now set up for prime focus imaging of M42.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this T-Ring work with Canon EF-S mount cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Canon EF mount is physically compatible with both EF and EF-S lenses and camera bodies. This T-Ring will attach to any Canon EOS camera that uses this mount, including both full-frame (EF) and APS-C (EF-S) models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use autofocus with the Celestron T-Ring attached?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. When you attach your camera to a telescope via a T-Ring, the telescope itself becomes the lens. There are no electronic connections to control autofocus. You must achieve focus manually using your telescope's focuser knob while viewing the image on your camera's live-view screen.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of photos can I take with the Celestron T-Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis setup is ideal for \"prime focus\" photography. It is excellent for short-exposure images of the Moon and brighter planets. With an equatorial mount that tracks the sky, you can also take longer exposures needed to capture deep-sky objects like galaxies and nebulae.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eCanon EOS (EF Mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 T-Threads\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 T-Ring for Canon EOS-EF Mount Camera\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":44967182336285,"sku":"CEL-93419","price":24.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-T-Ring-for-Canon-EOS-Camera-93419-1__20015.1594230503.1280.1280.jpg?v=1684338281"},{"product_id":"celestron-t-ring-for-nikon-camera","title":"Celestron T-Ring for Nikon Camera","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAttaches Nikon F-mount SLR\/DSLR cameras to telescopes\u003c\/li\u003e\n\u003cli\u003eEnables prime focus and eyepiece projection astrophotography\u003c\/li\u003e\n\u003cli\u003eStandard M42x0.75 female threads accept universal T-adapters\u003c\/li\u003e\n\u003cli\u003eDurable, all-metal construction ensures a secure connection\u003c\/li\u003e\n\u003cli\u003eReplaces the camera lens for direct optical train coupling\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 T-Ring for Nikon Camera\u003c\/h2\u003e\n\u003cp\u003eThe Celestron T-Ring for Nikon cameras is the fundamental accessory for connecting your DSLR or SLR camera body to a telescope, turning your high-powered optics into a massive telephoto lens. This simple, rugged ring replaces your standard camera lens and provides the universal T-threads needed to connect to a range of telescope-specific adapters. This connection is the first and most critical link in the chain for capturing high-resolution images of the Moon, planets, and deep-sky objects, 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\u003eThe Essential First Step for Nikon Astrophotography\u003c\/h3\u003e\n\u003cp\u003eIf you own a Nikon camera, this T-Ring is the non-negotiable starting point for imaging through a telescope. It attaches directly to your camera's F-mount bayonet just like a lens, providing a secure, rigid platform. The interior of the ring features standard M42x0.75 threads, the universal interface for astronomy camera adapters.\u003c\/p\u003e\n\u003cp\u003eThis threaded connection prevents the flexure, vignetting, and potential light leaks that can occur with less secure, universal camera mounts. By creating a solid metal-on-metal link, the Celestron T-Ring ensures your camera sensor remains perfectly aligned with the telescope's focal plane, a critical requirement for sharp, focused 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\u003eConnecting to SCTs, Refractors, and EdgeHD Systems\u003c\/h3\u003e\n\u003cp\u003eOnce the T-Ring is on your camera, you need a T-adapter to bridge the gap to your telescope's focuser or rear cell. The specific adapter depends entirely on your optical tube. Celestron offers dedicated adapters to ensure a perfect match and optimal image quality for various telescope designs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Schmidt-Cassegrain Telescopes:\u003c\/strong\u003e The #93633-A T-Adapter threads directly onto the standard rear cell of most SCTs, making it the ideal choice for prime focus lunar and planetary imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Refractors \u0026amp; Spotting Scopes:\u003c\/strong\u003e The Universal T-Adapter (#93625) features a 1.25” barrel, allowing you to slide your camera into any standard 1.25\" focuser like an eyepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor EdgeHD Optical Systems:\u003c\/strong\u003e To maintain the flat field of an EdgeHD, specific adapters are required. Use the #93644 for the 8-inch EdgeHD or the #93646 for the 9.25-inch, 11-inch, and 14-inch models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides the Celestron Nikon T-Ring to start astrophotography?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-Ring is the first piece. You will also need a \u003cstrong\u003eT-Adapter\u003c\/strong\u003e to connect the T-Ring to your specific telescope. The correct T-Adapter depends on your telescope's model (e.g., Schmidt-Cassegrain, Refractor, or EdgeHD).\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 T-Ring to my Nikon camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, remove the lens from your Nikon camera body. Then, align the mounting indicator on the T-Ring with the one on your camera's body and twist it into place until it clicks, just as you would with a standard lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this T-Ring work with any Nikon camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis Celestron T-Ring is designed for Nikon SLR and DSLR cameras that use the Nikon F-mount. It is not compatible with Nikon's newer mirrorless Z-mount cameras, which require a different T-Ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my eyepieces with the Celestron Nikon T-Ring attached?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot directly. This setup is for \"prime focus\" photography, where the telescope acts as the camera lens. To take pictures through an eyepiece (eyepiece projection), you would need an additional adapter, like a universal camera adapter that holds both the eyepiece and the camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat's the best way to use the Nikon T-Ring 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\" Schmidt-Cassegrain, you would pair this Nikon T-Ring with the Celestron #93633-A T-Adapter. The T-Adapter screws onto the rear cell of your SCT, and the T-Ring on your camera then screws onto the T-Adapter. This setup positions your camera sensor at the telescope's focal plane for a crisp, high-magnification shot of the entire lunar disc.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eMy telescope has a 1.25\" focuser. Which adapter do I need for my Celestron Nikon T-Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor telescopes with a 1.25\" focuser, such as many refractors or smaller reflectors, you should use the Celestron Universal T-Adapter (#93625). Its 1.25\" barrel slides into the focuser, and your T-Ring\/camera assembly then threads onto the back of the adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Compatibility\u003c\/td\u003e\n\u003ctd\u003eNikon F-mount (SLR\/DSLR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope-Side Thread\u003c\/td\u003e\n\u003ctd\u003eM42x0.75 (Female T-Thread)\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\u003cimg class=\"DAV-img-box\" alt=\"Celestron T-Ring for Nikon Camera\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/93402-A_t-ring_nikon_1.jpg?v=1680556276\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eT-Ring for Nikon Camera\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\"\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":44967182434589,"sku":"CEL-93402","price":24.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-T-Ring-for-Nikon-Camera-93402-1__48022.1594230503.1280.1280.jpg?v=1684338284"},{"product_id":"celestron-universal-1-25-t-adapter","title":"Celestron Universal 1.25\" T-Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects DSLR and SLR cameras to telescopes\u003c\/li\u003e\n\u003cli\u003eFits standard 1.25\" focusers and eyepiece adapters\u003c\/li\u003e\n\u003cli\u003eRequires a brand-specific T-Ring (sold separately)\u003c\/li\u003e\n\u003cli\u003eEnables prime focus photography for lunar and terrestrial targets\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 T-Adapter - 1.25\"\u003c\/h2\u003e\n\u003cp\u003eThe Celestron Universal T-Adapter is the fundamental link for prime focus astrophotography, connecting your DSLR or SLR camera body directly to any telescope equipped with a 1.25” focuser. This simple, rugged adapter allows your telescope to function as a massive telephoto lens for your camera, enabling direct imaging of the Moon, planets, and 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\u003ePrime Focus Photography: Directly Couple Your DSLR to Your Telescope\u003c\/h3\u003e\n\u003cp\u003eThis adapter makes it possible to attach your camera's body directly to your telescope's optical path. The top of the Universal T-Adapter features standard T-threads that screw into a camera-specific T-Ring (sold separately), which then mounts to your camera's lens flange. The 1.25\" barrel slides securely into your telescope's focuser, just like a standard eyepiece, creating a rigid and reliable 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\u003eAchieving Focus: A Critical Note for Newtonian and Refractor Owners\u003c\/h3\u003e\n\u003cp\u003ePrime focus photography requires significant inward focuser travel. While many catadioptric telescopes (like Schmidt-Cassegrains) have ample range, many Newtonian reflectors and \"fast\" refractors may not have enough travel to bring the image to a sharp focus with this standard T-adapter. This is a limitation of the telescope's optical design, not the adapter itself.\u003c\/p\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 T-Adapter vs. Barlow T-Adapter: Which Do You Need?\u003c\/h3\u003e\n\u003cp\u003eIf you own a telescope with limited focus travel, the solution is not to abandon prime focus but to modify it. Celestron's Universal Barlow \u0026amp; T-Adapter (#93640) is designed for this exact scenario. It incorporates a 2x Barlow lens that extends the focal point outwards, allowing cameras to reach focus on virtually any telescope type.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose this Universal T-Adapter if:\u003c\/strong\u003e You have an SCT or Maksutov-Cassegrain, or have confirmed your refractor\/Newtonian has sufficient back-focus for prime focus imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose the Universal Barlow \u0026amp; T-Adapter if:\u003c\/strong\u003e You have a Newtonian or fast refractor and are unable to reach focus, or if you want to double the magnification for planetary imaging on any telescope.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat do I need besides the Celestron Universal T-Adapter to connect my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a \u003cstrong\u003eT-Ring\u003c\/strong\u003e that matches your specific camera brand's lens mount (e.g., Canon EOS, Nikon F-mount, Sony E-mount). The T-Adapter has male T-threads, and the T-Ring has female T-threads on one side and the camera bayonet mount on the other. The T-Ring is sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy can't I reach focus with my Newtonian telescope using this T-Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMost Newtonian reflectors are designed for visual use, where the focal plane is very close to the focuser tube. A DSLR camera sensor is recessed deep inside the camera body, and this T-adapter adds more length. This combined distance is often too long for the telescope's focuser to rack in far enough. For these telescopes, you will need the \u003ca href=\"https:\/\/davidastro.com\/products\/celestron-universal-barlow-and-t-adapter-1-25\"\u003eCelestron Universal Barlow \u0026amp; T-Adapter (#93640)\u003c\/a\u003e, which pushes the focal point outward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Universal T-Adapter suitable for imaging deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile you can take short-exposure images of bright deep-sky objects, prime focus photography with a DSLR is typically unguided. This limits you to very short exposures (often under 30 seconds) before star trails appear. For serious deep-sky imaging, a dedicated astronomy camera and an equatorial mount with autoguiding are recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Celestron 1.25\" T-Adapter to image the Moon with my 8\" SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal setup. An 8\" SCT has more than enough focus travel to accommodate the T-Adapter and a DSLR. The Moon is bright enough that you can use very short exposures and a low ISO, resulting in sharp, detailed images of its craters and maria.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with a mirrorless camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as long as you purchase the correct T-Ring for your specific mirrorless camera mount (e.g., Sony E-mount, Canon RF, Nikon Z). The T-Adapter's T-threads are universal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the Celestron Universal T-Adapter add any magnification?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This T-Adapter is a simple mechanical tube that connects your camera at the telescope's native focal length (prime focus). It does not contain any optics and does not alter the magnification or focal length of 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\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eT-Threads (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Barrel\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\u003cimg class=\"DAV-img-box\" alt=\"Celestron Universal T-Adapter - 1.25\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/93625.jpg?v=1680132332\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUniversal T-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\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_93626_2__Universal_Digital_Camera_Adapter_Manual.pdf?v=1782186981\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload T-Adapter 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":44967182467357,"sku":"CEL-93625","price":40.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Celestron-Universal-1-25-inch-T-Adapter-93625-1__19010.1594230504.1280.1280.jpg?v=1684338288"},{"product_id":"sky-watcher-evoguide-50dx-apo-refractor","title":"Sky-Watcher Evoguide 50DX APO Refractor","description":"\u003c!-- more --\u003e\u003cp\u003eThe EvoGuide 50DX Apo Guide Scope Astrograph takes Sky-Watcher's doublet design and packages it in a lightweight guide scope. These doublet refractors deliver dramatic, coal-black skies and faithful, contrast-rich views of planetary and deep-space phenomenon that are second to none. Mounting to your guide camera is a breeze with convenient M42 rings on the back of the scope, and a beefy single-speed focus ring helps you nail focus. Although initially designed for guide cameras, the EvoGuide 50DX Apo Guide Scope Astrograph can be used to shoot fast, low focal length astrophotography when used in conjunction with a focal reducer (not included), producing stunning wide-field images. \u003c\/p\u003e\u003cp\u003eThis package includes the EvoGuide 50DX optical tube, tube rings, a finder stalk, and a V-style mounting plate. \u003c\/p\u003e\u003ch2\u003e\u003c\/h2\u003e\u003cdiv data-custom-tab=\"\"\u003e\u003cdiv\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967189545245,"sku":"SW-S11174","price":520.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Sky-Watcher-Evoguide-50DX-S11174__06289.1633554136.1280.1280.jpg?v=1684338418"},{"product_id":"sky-watcher-canon-camera-adapter-m48","title":"Sky-Watcher Canon Camera Adapter (M48)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EOS DSLR\/Mirrorless cameras to Sky-Watcher reducers\u003c\/li\u003e\n\u003cli\u003eFeatures a wide M48 x 0.75 thread to prevent vignetting\u003c\/li\u003e\n\u003cli\u003eEngineered specifically for Sky-Watcher 0.85x Focal Reducer\/Correctors\u003c\/li\u003e\n\u003cli\u003eOptimized for Esprit and ProED series apochromatic refractors\u003c\/li\u003e\n\u003cli\u003eProvides a secure, direct-threaded connection for astrophotography\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\u003eSky-Watcher Canon M48 Camera Adapter\u003c\/h2\u003e\n\u003cp\u003eThis Sky-Watcher Canon M48 Camera Adapter is the essential link for attaching your Canon EOS DSLR or mirrorless camera to a Sky-Watcher 0.85x Focal Reducer\/Corrector. It utilizes the larger M48 thread format, ensuring the entire field of view from the corrector illuminates your camera's sensor without the vignetting often caused by standard, smaller T-rings. This adapter is the correct component for serious imaging with Sky-Watcher's Esprit and ProED series 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\u003eM48 Thread for Full-Frame Illumination\u003c\/h3\u003e\n\u003cp\u003eThe key to this adapter is its M48 (48mm) diameter threading. Compared to the standard M42 T-thread, the wider M48 aperture passes a larger cone of light, which is critical for preventing darkened corners in your images, especially when using cameras with full-frame or large APS-C sensors. This ensures your flat frames can properly correct a clean, evenly illuminated field from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDesigned for Sky-Watcher 0.85x Reducers\u003c\/h3\u003e\n\u003cp\u003eThis is not a generic adapter; it is purpose-built to achieve the correct spacing and secure connection for Sky-Watcher's dedicated 0.85x focal reducer\/correctors. It provides a rigid, threaded attachment point that minimizes flexure and maintains perfect optical alignment between your camera and the telescope's corrector optics. This integration is vital for achieving sharp, round stars across the entire frame.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Telescopes:\u003c\/strong\u003e Specifically designed for the optical correctors used with Sky-Watcher Esprit and ProED series apochromatic refractors.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncompatible Systems:\u003c\/strong\u003e This adapter is not suitable for use with Sky-Watcher's Collapsible Dobsonian line or any system requiring a standard M42 T-ring.\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\"\u003eWhat is the difference between this Sky-Watcher M48 adapter and a standard Canon T-ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard T-ring uses an M42 x 0.75 thread. This \u003cstrong\u003eSky-Watcher M48 Adapter\u003c\/strong\u003e uses a larger M48 x 0.75 thread. The larger diameter of the M48 thread is designed to prevent vignetting (darkened corners) on cameras with larger sensors, like full-frame DSLRs, which is a common issue with the smaller M42 format.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M48 adapter work with my Sky-Watcher Esprit 120ED and its dedicated reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. This adapter is specifically designed to connect a Canon EOS camera to the dedicated 0.85x focal reducer\/correctors that come with the Sky-Watcher Esprit and ProED series telescopes, including the Esprit 120ED. It will provide the correct threading and spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Sky-Watcher M48 adapter on my 8\" Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This adapter is not suitable for use on Sky-Watcher's Collapsible Dobsonian line. Those telescopes typically require different adapters for prime-focus photography and are not compatible with the focal reducers this adapter is designed for.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need an M48 adapter for my full-frame Canon camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA full-frame sensor (24mm x 36mm) is large enough that the light cone projected by a smaller M42 T-ring can be physically cut off at the corners, causing vignetting. The wider M48 aperture of this adapter ensures the entire sensor is fully illuminated by the corrected field of the telescope's reducer, leading to brighter, cleaner images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter add any magnification?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the adapter itself does not change the magnification. It is a mechanical part designed solely to connect your Canon camera body to the telescope's focal reducer at the correct distance. The focal reduction (0.85x) is provided by the reducer\/corrector optic, not the adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Sky-Watcher M48 adapter work with other brands of focal reducers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt might thread on if the other reducer has a male M48 thread, but it is not guaranteed to produce a good result. This adapter is engineered to provide the specific back-focus distance required by Sky-Watcher's 0.85x reducers. Using it with other brands may result in incorrect spacing and poorly corrected images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eCanon EOS EF\/EF-S Bayonet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Application\u003c\/td\u003e\n\u003ctd\u003eAstrophotography with DSLR\/Mirrorless Cameras\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Telescope Series\u003c\/td\u003e\n\u003ctd\u003eSky-Watcher Esprit and ProED (with dedicated 0.85x reducer\/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\"\u003eSky-Watcher M48 Camera Adapter for Canon\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\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967193379101,"sku":"SW-S20300","price":40.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Sky-Watcher-Canon-Camera-Adapter-M48-S20300-1__46895.1594170794.1280.1280.jpg?v=1684338545"},{"product_id":"sky-watcher-nikon-camera-adapter-m48","title":"Sky-Watcher Nikon Camera Adapter (M48)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Nikon DSLR cameras to Sky-Watcher telescopes\u003c\/li\u003e\n\u003cli\u003eM48 thread size for wider illumination\u003c\/li\u003e\n\u003cli\u003eDesigned for 0.85x Focal Reducer\/Correctors\u003c\/li\u003e\n\u003cli\u003eOptimized for Esprit and ProED series 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\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\u003eSky-Watcher Nikon Camera Adapter (M48)\u003c\/h2\u003e\n\u003cp\u003eThis Sky-Watcher Nikon Camera Adapter (M48) creates a secure, wide-aperture connection between your Nikon DSLR camera and a Sky-Watcher 0.85x Focal Reducer\/Corrector. It is engineered specifically to leverage the larger M48 thread, providing a critical link for astrophotography with Esprit and ProED series 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\u003eM48 Thread for Full-Frame Illumination\u003c\/h3\u003e\n\u003cp\u003eUnlike standard M42 T-rings, this adapter uses the larger M48 (48mm) thread. This wider opening is essential for larger format imaging, as it minimizes vignetting—the dimming of corners in your image—by allowing the full light cone from the corrector to reach your camera's sensor. This ensures even illumination from edge to edge, which is especially critical for full-frame Nikon DSLRs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOptimized for Esprit and ProED Refractors\u003c\/h3\u003e\n\u003cp\u003eThe M48 Nikon Adapter is designed for a precise fit with the dedicated field correctors used on Sky-Watcher's high-end refractor lines. You can achieve a rigid, threaded imaging train with your Esprit or ProED APO refractor, ensuring your camera is held securely and perfectly parallel to the focal plane. Please note, this adapter is not suitable for use with Sky-Watcher's Collapsible Dobsonian telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between this M48 adapter and a standard Nikon T-Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard T-Ring uses a smaller M42x0.75 thread, which can cause vignetting (darkened corners) on cameras with larger sensors, like full-frame DSLRs. This \u003cstrong\u003eSky-Watcher M48 Adapter\u003c\/strong\u003e has a wider 48mm opening to provide a more evenly illuminated field of view, which is critical when pairing your camera with a focal reducer or field flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Sky-Watcher telescopes is the M48 Nikon adapter designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically intended for use with Sky-Watcher's \u003cstrong\u003eEsprit and ProED series\u003c\/strong\u003e refractors when using their dedicated 0.85x Focal Reducer\/Correctors. It is not designed for and will not work with their Collapsible Dobsonian line or other telescopes that use a standard T-thread connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect my Nikon D850 to my Sky-Watcher Esprit 100ED telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo connect your Nikon D850, you would first thread the dedicated 0.85x Focal Reducer\/Corrector onto your Esprit 100ED's focuser. Then, you thread this Sky-Watcher M48 Nikon Adapter onto the back of the reducer\/corrector. Finally, you attach your Nikon D850 body (with the lens removed) to the bayonet mount on the adapter, just like attaching a lens.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy can't I use this M48 adapter on a Sky-Watcher Collapsible Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eSky-Watcher's Collapsible Dobsonian telescopes are designed for visual use and have focusers that are typically compatible with standard 1.25\" or 2\" eyepieces and M42 T-thread adapters for prime-focus photography. They are not equipped with the M48 threaded correctors that this adapter is designed to mate with.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter maintain the correct back focus for my reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This adapter is machined to provide the standard 55mm back focus distance required by most focal reducers and correctors when used with a DSLR camera. This ensures you can achieve a sharp, flat field without needing additional spacers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with a third-party M48 field flattener on my Sky-Watcher ProED 80?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as long as the third-party field flattener has male M48x0.75 threads and requires a standard 55mm back focus distance for a DSLR camera, this Sky-Watcher M48 Nikon Adapter will work perfectly to connect your Nikon camera and achieve the correct spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eNikon F-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 Female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eSky-Watcher Esprit \u0026amp; ProED series with 0.85x Reducer\/Correctors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus Provided\u003c\/td\u003e\n\u003ctd\u003e55mm (Standard for DSLR)\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\"\u003eSky-Watcher Nikon Camera Adapter (M48)\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\/sky-watcher-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eSky-Watcher 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":44967193444637,"sku":"SW-S20301","price":40.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Sky-Watcher-Nikon-Camera-Adapter-M48-S20301-1__77191.1594170794.1280.1280.jpg?v=1684338547"},{"product_id":"explore-scientific-camera-ring-m48x0-75-for-canon-eos","title":"Explore Scientific Camera-Ring M48x0.75 for Canon EOS","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Canon EOS cameras to M48x0.75 accessories\u003c\/li\u003e\n\u003cli\u003eOptimized for full-frame sensors to eliminate vignetting\u003c\/li\u003e\n\u003cli\u003eWider clear aperture than standard M42 T-rings\u003c\/li\u003e\n\u003cli\u003eLightweight, black-anodized aluminum construction\u003c\/li\u003e\n\u003cli\u003eReduces internal reflections for higher contrast images\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 Camera-Ring M48x0.75 for Canon EOS\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific Camera-Ring M48x0.75 for Canon EOS provides a full-frame-ready connection between your camera and telescope accessories. By using the larger M48x0.75 thread standard instead of a traditional T-ring, this adapter illuminates your entire sensor without the vignetting common with smaller M42 adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFull-Frame Illumination with the M48x0.75 Thread\u003c\/h3\u003e\n\u003cp\u003eConnect your Canon EOS DSLR or mirrorless camera to field flatteners, coma correctors, and filter wheels that use the M48x0.75 filter thread standard. This adapter provides a secure, direct bayonet connection designed specifically for the Canon EOS mount, ensuring perfect alignment in your imaging train.\u003c\/p\u003e\n\u003cp\u003eThe primary advantage of the M48 thread is its wider clear aperture compared to the older M42 T-thread. This spacious opening allows the full light cone from your optics to reach the corners of a full-frame sensor, preventing clipped illumination and dark corners in your final astrophotographs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 vs. M42 T-Rings: Eliminating Full-Frame Vignetting\u003c\/h3\u003e\n\u003cp\u003eA standard M42 T-ring was designed when imaging sensors were much smaller. While adequate for APS-C sensors, its narrow opening can act as a bottleneck, physically blocking light from reaching the corners of a modern 35mm full-frame sensor.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific M48 ring solves this problem. Its larger diameter ensures an unobstructed light path, preserving edge-to-edge brightness and making it an essential upgrade for any full-frame Canon EOS astrophotographer. The adapter is crafted from matte black anodized aluminum to minimize internal reflections and enhance image contrast.\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 Explore Scientific M48 Ring for my full-frame Canon EOS camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need the \u003cstrong\u003eExplore Scientific M48 Ring\u003c\/strong\u003e to prevent vignetting (darkened corners) in your images. Standard M42 T-rings are too narrow for full-frame sensors and can block light. This M48 adapter provides a wider opening, ensuring your entire sensor is evenly illuminated.\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 M48 ring and a standard M42 T-ring for my Canon EOS?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe key difference is the thread diameter. This \u003cstrong\u003eM48 ring\u003c\/strong\u003e has a larger opening than a standard M42 T-ring. This wider aperture is critical for full-frame cameras, as it allows the entire light cone to pass through without being clipped, which is the primary cause of mechanical vignetting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific M48 Canon EOS Ring work with APS-C cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003eExplore Scientific M48 Ring\u003c\/strong\u003e is fully compatible with Canon EOS cameras that have smaller APS-C sensors. While vignetting is less of an issue on APS-C, using M48 accessories ensures you have a future-proof setup if you ever upgrade to a full-frame camera body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of telescope accessories can I connect with the Explore Scientific M48 Ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter allows you to connect your Canon EOS camera to any accessory with a male M48x0.75 thread. This includes many popular accessories designed for full-frame imaging, such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eField Flatteners\u003c\/li\u003e\n\u003cli\u003eComa Correctors\u003c\/li\u003e\n\u003cli\u003eOff-Axis Guiders\u003c\/li\u003e\n\u003cli\u003eFilter Wheels and Drawers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm trying to image the Andromeda Galaxy (M31) with my full-frame Canon EOS R and a large refractor. Will this M48 ring help?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. For a large target like the Andromeda Galaxy (M31) on a full-frame sensor, maximizing your illuminated field is crucial. Using the \u003cstrong\u003eExplore Scientific M48 Ring\u003c\/strong\u003e instead of an M42 ring will help ensure the faint outer arms of the galaxy are not lost in vignetted corners, giving you a cleaner, more evenly lit final image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I use this Explore Scientific M48 ring on my 8\" SCT with a reducer, will it prevent vignetting?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is a critical component for that setup. An 8\" SCT with a reducer produces a wide, fast light cone. The \u003cstrong\u003eExplore Scientific M48 Ring\u003c\/strong\u003e ensures that the connection to your Canon EOS camera is not the source of vignetting, allowing the reducer's fully corrected image circle to reach your sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e4007922064130\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\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":44967208419613,"sku":"ES-510383","price":41.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-Camera-Ring-M48x0-75-for-Canon-EOS-510383-1__56405.1594240399.1280.1280.jpg?v=1684338930"},{"product_id":"explore-scientific-camera-ring-m48x0-75-for-nikon","title":"Explore Scientific Camera-Ring M48x0.75 for Nikon","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Nikon F-mount DSLR cameras to M48x0.75 threaded accessories\u003c\/li\u003e\n\u003cli\u003e41.2mm clear inner diameter minimizes vignetting on full-frame sensors\u003c\/li\u003e\n\u003cli\u003eAdds a precise 8.0mm of optical path length to your imaging train\u003c\/li\u003e\n\u003cli\u003eConstructed from matte black anodized aluminum for durability\u003c\/li\u003e\n\u003cli\u003eWeighs only 30 grams to reduce load on your focuser\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 Camera-Ring M48x0.75 for Nikon\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific Camera-Ring for Nikon adapts your DSLR to the modern astrophotography standard with its M48x0.75 female thread and a wide 41.2mm inner diameter. This design eliminates the vignetting common with older M42 T-rings on full-frame sensors, while contributing a precise 8.0mm to your back focus distance in a lightweight 30-gram body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 Threading: A 41.2mm Aperture for Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eThis adapter ring is built around the M48x0.75 thread, the preferred standard for connecting full-frame cameras to field flatteners, reducers, and coma correctors. Its generous 41.2mm clear internal aperture allows the full light cone to pass unobstructed to your sensor, ensuring your images are brightly illuminated from corner to corner without the tell-tale dimming or clipping that plagues smaller adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePrecision Spacing: An 8.0mm Light Path in a 30g Body\u003c\/h3\u003e\n\u003cp\u003eAchieving the correct distance between your corrector and sensor is critical for sharp stars across the field. This adapter adds exactly 8.0mm of optical path length, a standard figure that simplifies back focus calculations. Machined from matte black anodized aluminum, the ring weighs only 30 grams, adding minimal mass and flexure to 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\u003eM48 vs. M42 T-Rings: Why the Larger Thread Matters for Imaging\u003c\/h3\u003e\n\u003cp\u003eWhile the classic M42 T-ring was sufficient for APS-C and smaller sensors, it acts as a bottleneck for modern full-frame DSLRs. The physical opening of an M42 adapter is too small, causing it to cut off light at the edges of a 35mm sensor, resulting in vignetting.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM42 (T-Thread):\u003c\/strong\u003e Limited clear aperture often vignettes full-frame sensors, requiring aggressive flat-field correction and cropping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48 (2-inch Filter Thread):\u003c\/strong\u003e The larger diameter provides a completely unvignetted field for full-frame sensors, preserving image data and quality across the entire frame.\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 benefit of the Explore Scientific M48 ring over a standard M42 T-ring for my Nikon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is the prevention of vignetting on full-frame cameras. The \u003cstrong\u003eM48x0.75 thread\u003c\/strong\u003e and wide \u003cstrong\u003e41.2mm internal diameter\u003c\/strong\u003e provide a much larger light path than a standard M42 T-ring, ensuring the corners of your full-frame sensor are fully illuminated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M48 ring work with my Nikon D850 or other full-frame DSLR?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This adapter is designed with a standard Nikon F-mount bayonet and is specifically intended for full-frame Nikon DSLRs like the D810, D850, and D750 to leverage their large sensors without vignetting. It is also fully compatible with Nikon APS-C (DX-format) cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 8.0mm light path of this ring affect my back focus calculation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must include this \u003cstrong\u003e8.0mm\u003c\/strong\u003e in your total back focus distance. For example, if your field flattener requires 55mm of back focus, this adapter provides 8.0mm of that distance. You would then need an additional 47mm of extension tubes to achieve perfect spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I thread 2\" filters into this Explore Scientific Nikon M48 ring?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter has female M48 threads designed to attach to a telescope's field flattener or corrector. To use filters, you would typically place them in a filter drawer or wheel, or thread them onto the nosepiece that goes into your focuser, ahead of this adapter in the optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 41.2mm inner diameter of this adapter large enough for an f\/4 imaging Newtonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the \u003cstrong\u003e41.2mm clear aperture\u003c\/strong\u003e is designed to handle the steep light cones from fast optical systems. When paired with a proper M48-threaded coma corrector, this ring will prevent the adapter itself from being the cause of vignetting, even on fast telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat material is the Explore Scientific M48 Camera-Ring made from?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter is made from lightweight and durable \u003cstrong\u003ematte black anodized aluminum\u003c\/strong\u003e. The anodizing process increases surface hardness and corrosion resistance, while the matte black finish minimizes internal reflections that could reduce image contrast.\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\u003e4007922064185\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Camera Mount\u003c\/td\u003e\n\u003ctd\u003eNikon F-mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Thread\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter\u003c\/td\u003e\n\u003ctd\u003e41.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Path Length\u003c\/td\u003e\n\u003ctd\u003e8.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eMatte Black Anodized Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e30 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\"\u003eExplore Scientific Camera-Ring M48x0.75 for Nikon\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 Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967208452381,"sku":"ES-510384","price":41.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-Camera-Ring-M48x0-75-for-Nikon-510384-1__71465.1594240399.1280.1280.jpg?v=1684338935"},{"product_id":"explore-scientific-2-t2-camera-adapter","title":"Explore Scientific 2\" T2 Camera Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects DSLR cameras to any 2-inch telescope focuser\u003c\/li\u003e\n\u003cli\u003eStandard male T2-thread (M42x0.75) for camera-specific T-rings\u003c\/li\u003e\n\u003cli\u003eEnables direct prime-focus astrophotography\u003c\/li\u003e\n\u003cli\u003e2-inch (50mm) barrel maximizes light throughput to the sensor\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 2\" T2 Camera Adapter\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific 2\" T2 Camera Adapter provides the essential link between your DSLR or mirrorless camera and any telescope equipped with a 2-inch (50mm) focuser. Its standard T2 male thread connects directly to your camera-specific T-ring, creating a secure, rigid imaging train for prime focus 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\u003eA Secure 2\" Connection for Prime Focus Astrophotography\u003c\/h3\u003e\n\u003cp\u003eThis adapter allows you to use your telescope as a high-power telephoto lens for your camera. By seating the 2-inch barrel firmly in your focuser and attaching your camera via a T-ring (sold separately), you place the camera's sensor directly at the telescope's focal plane. This direct, all-metal connection is far more stable and optically pure than holding a camera up to an eyepiece, eliminating vignetting and flexure for sharper, cleaner 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\u003e2\" vs. 1.25\" T-Adapter: Why the Larger Barrel Matters\u003c\/h3\u003e\n\u003cp\u003eWhile 1.25\" T-adapters exist, the Explore Scientific 2\" T2 adapter is critical for imagers using cameras with APS-C or full-frame sensors. The wider 2-inch barrel provides an unobstructed light path from the telescope to the sensor, preventing the vignetting or corner illumination drop-off that smaller adapters can cause. If your telescope has a 2-inch focuser, this adapter ensures you can take full advantage of your camera's entire sensor area.\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 else do I need to connect my camera with the Explore Scientific 2\" T2 Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou will need a \u003cstrong\u003eT-Ring\u003c\/strong\u003e that is specific to your camera's lens mount (e.g., Canon EOS, Nikon F-mount, Sony E-mount). The T-ring attaches to your camera body, and this T2 adapter then threads onto the T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific 2\" T2 Adapter work with my 8\" Schmidt-Cassegrain telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, provided your SCT is equipped with a 2-inch visual back or an upgraded 2-inch focuser. This adapter slides directly into any standard 2-inch receptacle, making it compatible with a wide range of SCTs, refractors, and reflectors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this 2\" T2 adapter cause vignetting with a full-frame DSLR?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed to minimize vignetting with larger sensors. Its 2-inch barrel provides a much wider light path than a 1.25\" adapter, making it the preferred choice for illuminating the entire area of full-frame and APS-C sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the Explore Scientific 2\" T2 adapter to my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, remove the lens from your camera and attach the appropriate T-ring to the camera's bayonet mount. Next, screw the Explore Scientific T2 adapter's male threads into the female threads on the T-ring until it is snug. The entire assembly then inserts into your telescope's 2-inch focuser like an eyepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter suitable for imaging the Orion Nebula (M42) with a wide-field refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The 2-inch barrel is ideal for wide-field imaging, ensuring the light cone from your refractor fully illuminates the camera sensor. This prevents darkened corners and is critical for capturing large, sprawling targets like the Orion Nebula (M42) or Andromeda Galaxy (M31) in a single frame.\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 T-adapter and a Barlow lens?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA T-adapter is a non-optical mechanical part used to connect your camera at the telescope's native focal length (known as 'prime focus'). A Barlow lens is an optical device containing lenses that you place between the focuser and the T-adapter to increase the telescope's effective focal length, thereby increasing 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\u003e2\" (50mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eMale T2-Thread (M42x0.75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e2\" Nosepiece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e4007922006444\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\" T2 Camera 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\/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":44967208648989,"sku":"ES-510365","price":97.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-50mm-2-inch-T2-Camera-Adapter-510365-510365-1__82074.1594240401.1280.1280.jpg?v=1684339082"},{"product_id":"explore-scientific-m48x0-75-adapter-for-fffr","title":"Explore Scientific M48x0.75  Adapter for FFFR","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 (2-inch filter thread) accessories to the Explore Scientific 3\" 0.7x Reducer\u003c\/li\u003e\n\u003cli\u003eReplaces the standard M42 T-thread adapter included with the reducer\u003c\/li\u003e\n\u003cli\u003eWider aperture reduces vignetting with full-frame and large APS-C sensors\u003c\/li\u003e\n\u003cli\u003eLightweight design at only 0.15 lb (0.08 kg)\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 M48x0.75 Adapter for FFFR\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific M48x0.75 Adapter is the essential upgrade for the 3-inch 0.7x Field Flattener\/Focal Reducer, replacing the stock M42x0.75 adapter to provide a wider light path for large-sensor cameras. Weighing only 0.15 lb (0.08 kg), this component ensures a secure, threaded connection without adding significant mass to 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\u003eUpgrade to M48 Threads for the 3-inch 0.7x Reducer\u003c\/h3\u003e\n\u003cp\u003eThis adapter is specifically designed to replace the M42 T-thread adapter that comes standard with the Explore Scientific 3-inch 0.7x Reducer\/Flattener. By swapping to this M48x0.75 version, you can directly connect accessories like filter wheels, off-axis guiders, and camera rotator that use the larger 2-inch filter thread standard for a more robust and less restrictive imaging connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 vs. M42: Reducing Vignetting on Larger Sensors\u003c\/h3\u003e\n\u003cp\u003eThe primary advantage of M48 threads over the standard M42 T-thread is its larger clear aperture. This wider opening minimizes vignetting—the darkening of corners in an image—which becomes a significant issue when using cameras with full-frame or large APS-C sensors. While the stock M42 adapter is sufficient for smaller sensors, this M48 adapter is the definitive solution for imagers looking to illuminate the largest possible field with their Explore Scientific reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Explore Scientific reducer is the M48x0.75 Adapter compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed exclusively for the \u003cstrong\u003eExplore Scientific 3-inch Field Flattener\/0.7x Focal Reducer\u003c\/strong\u003e. It is a direct replacement for the M42 adapter that ships with that specific reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I upgrade the Explore Scientific reducer to this M48 adapter from the standard M42?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou should upgrade to the M48 adapter if you are using a camera with a large sensor (APS-C or full-frame). The wider \u003cstrong\u003eM48 aperture provides a less restricted light path\u003c\/strong\u003e, which helps to reduce or eliminate vignetting at the corners of your images compared to the standard M42 T-thread adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Explore Scientific M48 adapter eliminate all vignetting on my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile the Explore Scientific M48 adapter significantly reduces vignetting by removing the bottleneck of the M42 thread, achieving a perfectly flat field often requires calibration frames like flats. However, it provides the widest possible unvignetted light path from the reducer itself, giving you the best starting point for large-sensor imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Explore Scientific M48x0.75 Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation is straightforward. Simply unthread the standard M42 adapter that came with your Explore Scientific 3-inch 0.7x Reducer\/Flattener and thread the new M48x0.75 Adapter in its place. The connection is entirely threaded, requiring no tools.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I still attach my 2-inch filters with this M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter provides M48 female threads on the camera side. To use 2-inch filters (which typically have M48 male threads), you would place them in a filter wheel or filter drawer that sits between this adapter and your camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this M48 adapter necessary for my camera with an APS-C sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor smaller APS-C sensors, the standard M42 adapter may be sufficient. However, for larger APS-C sensors, especially those in modern mirrorless cameras, upgrading to the M48 adapter is highly recommended to maximize illumination across the entire sensor and minimize vignetting.\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\u003eThreads\u003c\/td\u003e\n\u003ctd\u003eM48x0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eExplore Scientific 3-inch Field Flattener\/0.7x Focal Reducer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.15 lb \/ 0.08 kg\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\"\u003eM48x0.75 Adapter for FFFR\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 product does not have a software or manual download.\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":44967208780061,"sku":"ES-M48-0750.7x","price":51.79,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Explore-Scientific-M48x0-75-Adapter-for-FFFR-M48-0750-7x-1__43775.1594240403.1280.1280.jpg?v=1684339100"},{"product_id":"explore-scientific-2-adapter-for-fffr507x-00","title":"Explore Scientific 2\" Adapter for FFFR507X-00","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts the 3\" 0.7x Reducer (FFFR507X-00) to fit 2\" focusers\u003c\/li\u003e\n\u003cli\u003eEnables use of premium optics on a wider range of telescopes\u003c\/li\u003e\n\u003cli\u003eSecure, precision-machined connection\u003c\/li\u003e\n\u003cli\u003eMaintains optical alignment between focuser and 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\u003eExplore Scientific 2\" Adapter for FFFR507X-00\u003c\/h2\u003e\n\u003cp\u003eThis essential adapter connects the Explore Scientific 3-inch 0.7x Field Flattener Focal Reducer (FFFR507X-00) to any standard 2-inch focuser, expanding its compatibility to a much wider range of optical tubes. It allows you to leverage the advanced optical correction of a premium 3-inch accessory on telescopes equipped with a more common 2-inch drawtube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBridge Your 3\" Reducer to a 2\" Focuser\u003c\/h3\u003e\n\u003cp\u003eThe Explore Scientific FFFR507X-00 0.7x reducer is designed to provide a large, flat, and corrected field for serious astrophotography, but its native 3-inch format limits its use to telescopes with large focusers. This 2\" adapter solves that problem directly, providing a secure, threaded connection that steps the reducer down to the 2-inch format. Now you can use your high-end reducer on more portable refractors or secondary imaging scopes without compromising the mechanical connection.\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 Explore Scientific 2\" Adapter for FFFR507X-00?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter allows you to physically attach the \u003cstrong\u003eExplore Scientific 3-inch 0.7X Field Flattener Focal Reducer (model FFFR507X-00)\u003c\/strong\u003e to a telescope's \u003cstrong\u003e2-inch focuser\u003c\/strong\u003e. It bridges the size difference, enabling the use of this specific 3-inch accessory on telescopes that do not have a 3-inch drawtube.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI want to image the Andromeda Galaxy (M31) with my ES102 refractor which has a 2\" focuser. Is this adapter the right solution to use my FFFR507X-00 reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is precisely the correct accessory for that scenario. The \u003cstrong\u003eExplore Scientific 2\" Adapter\u003c\/strong\u003e will allow you to connect your FFFR507X-00 reducer to your refractor's 2-inch focuser, reducing its focal length for a wider field of view that is ideal for large targets like the Andromeda Galaxy (M31).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill using the Explore Scientific 2\" Adapter cause vignetting with my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003ePotentially, yes. While the FFFR507X-00 reducer is designed to illuminate a large image circle, stepping it down to a 2-inch barrel creates a new physical bottleneck. With very large sensors (like full-frame), the 2-inch barrel itself may cause some light fall-off, or vignetting, at the corners of the frame. This is an expected trade-off for adapting a 3-inch accessory to a 2-inch format and can typically be corrected with flat frames during image processing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter compatible with focal reducers from other brands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed for the threading and backfocus requirements of the \u003cstrong\u003eExplore Scientific FFFR507X-00 3-inch 0.7x Reducer\u003c\/strong\u003e. It is not guaranteed to work with reducers from other manufacturers, which may use different thread specifications or have different spacing requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this adapter attach to the FFFR507X-00 reducer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter features precision threads that screw directly and securely onto the body of the FFFR507X-00 focal reducer. The other end is a standard 2-inch barrel that slides into your telescope's focuser and is secured by the focuser's compression ring or thumbscrews.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need the Explore Scientific 2\" Adapter if my telescope already has a 3\" focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. If your telescope is already equipped with a 3-inch focuser, you can connect the FFFR507X-00 reducer directly without this adapter. This adapter is only for telescopes that have a 2-inch focuser.\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\u003e4007922000855\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eExplore Scientific 3\" 0.7x Field Flattener Focal Reducer (FFFR507X-00)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection\u003c\/td\u003e\n\u003ctd\u003e2\" Focuser\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\" Adapter for FFFR507X-00\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 Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":44967208812829,"sku":"ES-510364","price":139.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Explore-Scientific-2-inch-Adapter-for-FFFR507X-00-510364-1__51598.1594240404.1280.1280.jpg?v=1684339102"},{"product_id":"qhyccd-oag","title":"QHYCCD OAG","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIntegrated helical focuser for precise guide camera adjustment\u003c\/li\u003e\n\u003cli\u003eRigid, single-path design eliminates flexure from a separate guidescope\u003c\/li\u003e\n\u003cli\u003eLocking thumbscrew secures focus for consistent results\u003c\/li\u003e\n\u003cli\u003eAvailable in S, M, and L sizes to match different camera back-focus requirements\u003c\/li\u003e\n\u003cli\u003e7mm prism aperture provides a bright field for the guide camera\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eQHYCCD Off-Axis Guider (OAG)\u003c\/h2\u003e\n      \u003cp\u003eThe QHYCCD OAG eliminates differential flexure by using the same light path for both imaging and guiding, sampling stars from the main telescope's field through a 7mm prism aperture. This design ensures your autoguiding system tracks the exact same movements seen by your primary imaging sensor, resulting in tighter, rounder stars.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eIntegrated Helical Focuser for Precise Guiding\u003c\/h3\u003e\n      \u003cp\u003eAchieving sharp focus on your guide camera is critical for accurate tracking, and the QHYCCD OAG features a built-in helical focuser to make this process simple and repeatable. A large thumbscrew allows you to lock the focuser position once perfect focus is achieved, preventing any drift during an imaging session. This fine focus control ensures your guiding software receives the highest quality data for making sub-pixel corrections.\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\u003eOAG-S, OAG-M, and OAG-L for Flexible Integration\u003c\/h3\u003e\n      \u003cp\u003eTo accommodate a wide range of imaging setups, the QHYCCD OAG is available in multiple sizes (Small, Medium, and Large). This ensures you can match the OAG's thickness to your camera's back-focus requirements, maintaining the correct sensor-to-corrector distance. A dedicated OAG-M model is also available specifically for use with the large-format QHY16200A camera, providing a rigid and optimized connection for demanding imaging trains.\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\"\u003eHow do I focus the guide camera with the QHYCCD OAG?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe QHYCCD OAG has an integrated helical focuser. First, loosen the locking thumbscrew. Then, rotate the focusing ring until your guide stars are sharp. Once you have achieved focus, gently tighten the thumbscrew to lock the position. Avoid moving the focuser while it is locked to prevent damage.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the advantages of the QHYCCD OAG over a separate guidescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAn Off-Axis Guider offers two primary advantages over a traditional guidescope:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eEliminates Differential Flexure:\u003c\/strong\u003e The OAG uses the main telescope's optics, so the guide camera and imaging camera see the exact same field movement. This removes tracking errors caused by the guidescope's mounting rings or focuser sagging relative to the main telescope.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eReduces Weight and Complexity:\u003c\/strong\u003e It replaces an entire secondary telescope, reducing the overall payload on your mount and simplifying your setup.\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 the QHYCCD OAG help when imaging with my 11\" SCT?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eSchmidt-Cassegrain telescopes (SCTs) can suffer from \"mirror flop,\" where the primary mirror shifts slightly during tracking, causing image drift that a separate guidescope cannot detect. Because the QHYCCD OAG picks off light *after* it has reflected off the primary mirror, it sees and corrects for this mirror movement, leading to significantly sharper long-exposure images.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich QHYCCD OAG model (S, M, or L) should I choose?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe correct choice depends on the back-focus requirements of your specific imaging train (camera, filter wheel, and corrector\/reducer). Each model has a different thickness. You should choose the model that allows you to place your main camera sensor at the precise back-focus distance specified by your telescope or flattener optics.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the QHYCCD OAG with a full-frame camera and a fast f\/4 Newtonian?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, but careful placement of the prism is key. In fast optical systems, the prism can cast a shadow on the main sensor if placed too far into the light path. You should position the prism just outside the field of view of your main imaging sensor to pick off guide stars from the edge of the corrected field without creating vignetting.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of guide camera works best with the QHYCCD OAG?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA sensitive, monochrome guide camera with small pixels is ideal. Models like the QHY5III series are excellent choices. Their high sensitivity allows them to detect fainter guide stars in the small field of view provided by the OAG's prism, which is especially important at long focal lengths or when imaging through narrowband filters.\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\u003eAvailable Models\u003c\/td\u003e\n\u003ctd\u003eOAG-S, OAG-M, OAG-M for QHY16200A, OAG-L\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePrism Aperture\u003c\/td\u003e\n\u003ctd\u003e7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFocuser Type\u003c\/td\u003e\n\u003ctd\u003eIntegrated Helical Focuser with Locking Screw\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\"\u003eQHYCCD Off-Axis Guider\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e(Selected Model)\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\/qhyccd-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eQHYCCD Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"QHYCCD","offers":[{"title":"OAG-M","offer_id":44967212876061,"sku":"QHY-100094","price":322.0,"currency_code":"CAD","in_stock":true},{"title":"OAG-M for 16200A","offer_id":44967212908829,"sku":"QHY-100101","price":322.0,"currency_code":"CAD","in_stock":true},{"title":"OAG-S","offer_id":44967212941597,"sku":"QHY-100073","price":252.0,"currency_code":"CAD","in_stock":true},{"title":"OAG-L","offer_id":44967212974365,"sku":"QHY-100075","price":392.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/16912_source_1595641578.jpg?v=1684339042"},{"product_id":"william-optics-50mm-guiding-scope","title":"William Optics 50mm Guiding Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e50mm Aperture Doublet Lens\u003c\/li\u003e\n\u003cli\u003e200mm Focal Length\u003c\/li\u003e\n\u003cli\u003ef\/4.0 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e1.25\" RotoLock Eyepiece Holder\u003c\/li\u003e\n\u003cli\u003eTotal Weight: 0.42 kg \/ 0.93 lbs\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 50mm Guiding Scope\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 50mm Guiding Scope combines a 50mm doublet objective with a fast f\/4.0 focal ratio to deliver a wide field of view for reliable autoguiding. Its 200mm focal length is optimized for finding guide stars easily, while the entire optical tube weighs only 0.42 kg (0.93 lbs), adding minimal load to your mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eWide-Field Guiding: A Fast f\/4.0, 200mm Optical System\u003c\/h3\u003e\n\u003cp\u003eThe core of this guide scope is its 50mm f\/4.0 optical system. This combination produces a 200mm focal length that yields a very wide field of view, dramatically increasing the odds of finding a suitable guide star in any part of the sky without having to re-frame your primary target. The fully multi-coated doublet lens ensures bright, high-contrast star images for your guide camera, enabling a stronger lock and more precise corrections.\u003c\/p\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 \u0026amp; Lightweight: 1.25\" RotoLock at Just 0.42 kg\u003c\/h3\u003e\n\u003cp\u003eWeighing a mere 0.42 kg, this guide scope minimizes its impact on your mount's payload and reduces the potential for system flexure. A key feature is the integrated 1.25\" RotoLock adapter, a superior alternative to simple thumbscrews. The RotoLock provides a secure, self-centering grip on your guide camera, ensuring it remains perfectly aligned with the optical axis throughout your imaging session for consistent, error-free guiding.\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 William Optics 50mm Guiding Scope's f\/4.0 focal ratio beneficial?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe fast \u003cstrong\u003ef\/4.0 focal ratio\u003c\/strong\u003e, combined with the \u003cstrong\u003e200mm focal length\u003c\/strong\u003e, creates a very wide field of view. This allows your guide camera to see a larger patch of sky, dramatically increasing the number of potential guide stars available and making setup faster.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 1.25\" RotoLock adapter on the William Optics scope improve guiding?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1.25\" RotoLock\u003c\/strong\u003e provides a secure, self-centering connection for your guide camera. Unlike thumbscrews that can cause tilt, the RotoLock ensures the camera sensor is perfectly aligned with the optical axis, which is critical for preventing guiding errors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 0.42 kg weight of the William Optics Guiding Scope significant?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. At only \u003cstrong\u003e0.42 kg (0.93 lbs)\u003c\/strong\u003e, the scope adds minimal weight and torque to your imaging setup. This reduces the risk of mechanical flexure and ensures your mount's tracking performance isn't compromised by an unnecessarily heavy accessory.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 50mm guide scope with my 8\" SCT for imaging galaxies like M81?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an excellent pairing. The \u003cstrong\u003e200mm focal length\u003c\/strong\u003e provides a good image scale for guiding an SCT. The wide field makes finding a suitable guide star near a relatively small target like the Bode's Galaxy (M81) much easier than with a longer, narrower guide scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 200mm focal length precise enough for my wide-field refractor imaging the Cygnus Loop?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The \u003cstrong\u003e200mm focal length\u003c\/strong\u003e is a perfect match for wide-field imaging. It provides more than enough guiding accuracy for shorter focal length refractors, ensuring round stars across large mosaics of targets like the Veil Nebula complex (NGC 6960, etc.) without being overly sensitive to atmospheric seeing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhen would an Off-Axis Guider be better than the William Optics 50mm scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile this 50mm guide scope is excellent for most systems, an Off-Axis Guider (OAG) is often preferred for very long focal length instruments (e.g., large RCs or SCTs) to eliminate differential flexure. An OAG samples the same light path as the imaging camera, correcting for any mirror shift that a separate guide scope cannot see.\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\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Type\u003c\/td\u003e\n\u003ctd\u003eDoublet Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e252 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.42 kg \/ 0.93 lbs\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 50mm Guiding Scope\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\" RotoLock 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":"Black","offer_id":44967214022941,"sku":"WO-M-G50NCIII","price":246.0,"currency_code":"CAD","in_stock":true},{"title":"Grey","offer_id":44967214055709,"sku":"WO-M-G50BWIII","price":213.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-50mm-Guide-Scope-1.jpg?v=1722279442"},{"product_id":"william-optics-slide-base-uniguide-50mm-scope","title":"William Optics Slide-Base UniGuide 50mm Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e50mm Aperture Doublet Lens\u003c\/li\u003e\n\u003cli\u003e200mm Focal Length (f\/4.0)\u003c\/li\u003e\n\u003cli\u003eIntegrated 1.25\" RotoLock Adapter\u003c\/li\u003e\n\u003cli\u003eSlide-Base for William Optics Handles\u003c\/li\u003e\n\u003cli\u003eTotal Weight: 0.5 kg \/ 1.1 lbs\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 Slide-Base UniGuide 50mm Scope\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Slide-Base UniGuide 50mm Scope combines a fast f\/4.0 optical system with a 200mm focal length to deliver a bright, wide field of view ideal for autoguiding. Its 50mm doublet lens gathers ample light for tracking faint guide stars, while the entire assembly weighs just 0.5 kg (1.1 lbs), adding minimal load to your imaging setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e50mm f\/4.0 Optics: Bright Stars Across a Wide Field\u003c\/h3\u003e\n\u003cp\u003eFinding a suitable guide star is simplified with the UniGuide's optical design. The 50mm aperture and fast f\/4.0 focal ratio produce bright, sharp star fields, ensuring your autoguider has plenty of targets to choose from. The 200mm focal length provides an ideal image scale for guiding short-to-medium focal length imaging telescopes with precision.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoublet Lens:\u003c\/strong\u003e The air-spaced doublet objective is fully multi-coated to maximize light transmission and contrast, critical for detecting faint stars.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Field of View:\u003c\/strong\u003e The combination of the 50mm aperture and 200mm focal length creates a generous field of view, reducing the time spent hunting for a guide star near your deep-sky target.\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\u003eRotoLock \u0026amp; Slide-Base: A 0.5 kg Zero-Flexure Guiding System\u003c\/h3\u003e\n\u003cp\u003eThis guide scope eliminates two common sources of guiding error: camera sag and differential flexure. The innovative mechanical design ensures a rock-solid connection from your guide camera straight through to your main telescope, all within a lightweight 0.5 kg package.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25\" RotoLock Adapter:\u003c\/strong\u003e Forget flimsy thumbscrews. The RotoLock system secures your guide camera with a simple twist, creating a perfectly centered, non-marring, and rotation-free connection that prevents sag and tilt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlide-Base Integration:\u003c\/strong\u003e Designed for modern William Optics telescopes, the integrated base slides directly into the scope's handle, eliminating the need for separate guide rings and dovetail bars. This creates a more rigid, compact, and lighter guiding setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM48 Threading:\u003c\/strong\u003e For additional mounting flexibility, an M48 male thread is located under the RotoLock adapter, allowing for direct connection to other accessories.\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 do I mount the William Optics UniGuide 50mm scope to my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe UniGuide 50mm features an integrated slide-base designed to fit directly into the saddle of compatible William Optics carrying handles. This provides a secure, low-profile attachment without extra hardware. For mounting on telescopes from other brands or those without this handle design, you will need a separate Vixen-style dovetail bar that can be attached to the base of the guide scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat makes the RotoLock adapter on the UniGuide 50mm better than standard thumbscrews?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e1.25\" RotoLock adapter\u003c\/strong\u003e provides a superior connection for your guide camera. Unlike thumbscrews, which can cause tilt and do not guarantee perfect centering, the RotoLock uses a rotating compression ring. This ensures your camera is held securely on-axis, preventing sag and flexure that can ruin long exposures. It also avoids scratching or denting your camera's nosepiece.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the UniGuide 50mm work well for guiding my RedCat on a target like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it's an excellent match. The UniGuide's 200mm focal length pairs very well with wide-field refractors like the RedCat series. Its wide field of view makes it easy to find a bright guide star within the large expanse of a target like the Andromeda Galaxy (M31), ensuring sharp stars across your entire image.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of guide cameras are compatible with the UniGuide 50mm scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics UniGuide 50mm is compatible with any guide camera that has a standard \u003cstrong\u003e1.25\" nosepiece\u003c\/strong\u003e. This includes popular models from ZWO, QHY, Player One, and others. The RotoLock adapter provides a secure grip on any standard 1.25\" barrel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 200mm focal length of the UniGuide 50mm a good match for an 8\" f\/8 Ritchey-Chrétien?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile it can work, a 200mm focal length is on the shorter side for guiding a telescope with a focal length of 1600mm or more. For optimal guiding with a long focal length RC, astronomers often prefer a guide scope with a longer focal length or use an off-axis guider (OAG). However, for exposures under a few minutes with a good mount, the UniGuide 50mm can still provide acceptable results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use filters with the William Optics UniGuide 50mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The UniGuide features an \u003cstrong\u003eM48 male thread\u003c\/strong\u003e concealed beneath the 1.25\" RotoLock adapter. If you unscrew the RotoLock portion, you can attach accessories with a corresponding M48 female thread, such as a filter holder or other adapters, though this is not a common application for a guide scope.\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\u003eLens Type\u003c\/td\u003e\n\u003ctd\u003eDoublet Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/4.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e252 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg \/ 1.1 lbs\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 Slide-Base UniGuide 50mm Scope\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":"Black and red","offer_id":50843684569373,"sku":"WO-M-G50PB-BR","price":275.0,"currency_code":"CAD","in_stock":true},{"title":"Red","offer_id":44967216775453,"sku":"WO-M-G50PB-WR","price":275.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":44967216709917,"sku":"WO-M-G50PB-WG","price":275.0,"currency_code":"CAD","in_stock":true},{"title":"Grey","offer_id":44967216808221,"sku":"WO-M-G50PB-TG","price":275.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-Uniguide-50mm.png?v=1722279198"},{"product_id":"william-optics-slide-base-uniguide-32mm-scope","title":"William Optics Slide-Base UniGuide 32mm Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e32mm Doublet Objective Lens\u003c\/li\u003e\n\u003cli\u003eFast f\/3.75 Focal Ratio\u003c\/li\u003e\n\u003cli\u003e120mm Focal Length\u003c\/li\u003e\n\u003cli\u003eIntegrated Vixen\/Synta-Style Slide-Base\u003c\/li\u003e\n\u003cli\u003eUltra-Lightweight at 0.23 kg (0.51 lbs)\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 Slide-Base UniGuide 32mm Scope\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Slide-Base UniGuide 32mm Scope integrates a fast f\/3.75 optical system with a 120mm focal length into a rigid, featherlight 0.23 kg assembly. Its 32mm doublet objective lens provides bright, sharp guide stars, while the compact 147mm tube and integrated slide-base mount are engineered to eliminate the differential flexure that plagues traditional ring-mounted guide scopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFast f\/3.75 Optics: A 32mm Doublet for Bright Guide Stars\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the UniGuide is a 32mm air-spaced doublet lens with full multi-coatings. This design delivers high-contrast images, rendering potential guide stars as sharp, tight points. The fast f\/3.75 focal ratio works with the 120mm focal length to produce a bright image, allowing your guide camera to use shorter exposures and track stars more effectively, even in areas of the sky with fewer bright 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\u003eIntegrated Slide-Base Mount: A Rigid 0.23 kg Guiding Solution\u003c\/h3\u003e\n\u003cp\u003eWeighing only 0.23 kg (0.51 lbs), the UniGuide adds minimal load to your mount. Its key innovation is the integrated Vixen\/Synta-style slide-base, designed to attach directly to the handle bar or saddle of compatible William Optics telescopes. This single-piece construction creates a solid, flex-free connection between your imaging scope and guide scope, which is critical for maintaining accurate tracking over long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003e1.25\" and M42 Threads: Universal Guide Camera Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe UniGuide is designed for broad compatibility with the most popular guide cameras on the market. It features a standard 1.25\" eyepiece holder with a secure locking mechanism, as well as a male M42x0.75 T-thread for direct, rigid connection to cameras that support it. This dual-interface system ensures you can securely mount compact guiders like the ZWO ASI120MM Mini or Starlight Xpress Lodestar for a stable, reliable setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 0.23 kg UniGuide vs. Rings: Eliminating Differential Flexure\u003c\/h3\u003e\n\u003cp\u003eTraditional guide scopes rely on adjustable rings, which introduce multiple points of potential sag, slippage, and flexure as the telescope tracks across the sky. The UniGuide's 0.23 kg, single-body design bypasses this entire problem. By mounting directly and rigidly to the main optical tube, it ensures both telescopes move as one, eliminating a primary source of elongated stars and improving the quality of your final images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat guide cameras are compatible with the William Optics UniGuide 32mm?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe UniGuide 32mm is compatible with a wide range of guide cameras thanks to its dual connection options. You can use any camera with a \u003cstrong\u003e1.25\" nosepiece\u003c\/strong\u003e or one that can connect via a standard \u003cstrong\u003eM42 T-thread\u003c\/strong\u003e. This includes popular models like the ZWO ASI120 Mini, QHY5L-II, and Starlight Xpress Lodestar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I mount the UniGuide 32mm Scope to my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe UniGuide features an integrated \u003cstrong\u003eVixen\/Synta-style slide-base\u003c\/strong\u003e. This allows it to mount directly onto the carrying handle or saddle of most William Optics telescopes without any additional rings or hardware, ensuring a quick, simple, and rigid connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 120mm focal length of the UniGuide 32mm suitable for guiding an 8\" SCT at f\/10?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. Modern guiding software is extremely accurate at calculating star centroids to a sub-pixel level. The 120mm focal length of the UniGuide provides a wide field of view to easily find guide stars and is more than precise enough to guide a telescope with a focal length of 2000mm or more, such as a typical 8\" SCT.\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 UniGuide's slide-base over traditional guide rings?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is the elimination of \u003cstrong\u003edifferential flexure\u003c\/strong\u003e. Traditional rings can sag or allow the guide scope to shift slightly relative to the main telescope, causing guiding errors. The UniGuide's rigid, one-piece mounting system ensures both scopes move in perfect unison, leading to sharper, rounder stars in your long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the UniGuide 32mm work with a non-William Optics telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, as long as your telescope has a Vixen-style saddle clamp available where you want to mount the guide scope. The UniGuide's base conforms to the standard Vixen\/Synta profile, so it can be attached to any compatible saddle, not just those on William Optics telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI'm imaging the North American Nebula (NGC 7000) with a wide-field refractor; is the UniGuide 32mm a good match?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe UniGuide 32mm is an excellent match for wide-field refractors. Its light weight of 0.23 kg keeps the entire imaging payload balanced and manageable. The 120mm focal length provides a very wide field of view, making it extremely easy to find a suitable guide star within the expansive star fields around targets like the North American Nebula (NGC 7000).\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\u003eLens Type\u003c\/td\u003e\n\u003ctd\u003eDoublet Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e32 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/3.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length\u003c\/td\u003e\n\u003ctd\u003e147 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg \/ 0.51 lbs\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 UniGuide 32mm Scope with Integrated Slide-Base\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":"Red","offer_id":44967216906525,"sku":"WO-M-G32PB-RD","price":189.0,"currency_code":"CAD","in_stock":true},{"title":"Grey","offer_id":44967216873757,"sku":"WO-M-G32PB-TG","price":189.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":44967216840989,"sku":"WO-M-G32PB-GD","price":189.0,"currency_code":"CAD","in_stock":true},{"title":"Blue","offer_id":48958897848605,"sku":"WO-M-G32PB-BU","price":189.0,"currency_code":"CAD","in_stock":true},{"title":"Black","offer_id":52839936360733,"sku":"WO-M-G32PB-BR","price":189.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-Uniguide-32mm.png?v=1722104957"},{"product_id":"william-optics-guide-star-61","title":"William Optics GuideStar 61","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eFPL53 ED Air-Spaced Doublet Lens\u003c\/li\u003e\n\u003cli\u003eDual-Purpose Guide Scope and Imaging Telescope\u003c\/li\u003e\n\u003cli\u003eDraw-Tube (Push-Pull) Focuser\u003c\/li\u003e\n\u003cli\u003eRotating Lens Assembly for Image Framing\u003c\/li\u003e\n\u003cli\u003eCNC-Machined Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eVixen\/Synta-Style Finder Dovetail Rail\u003c\/li\u003e\n\u003cli\u003eIncludes Padded Soft Carry 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\u003eWilliam Optics GuideStar 61 APO Refractor\u003c\/h2\u003e\n\u003cp\u003eThe William Optics GuideStar 61 uses an FPL53 ED doublet, the same 2-element lens found in the Zenithstar 61, for pure apochromatic performance. This single optical tube serves two critical roles for astrophotographers: a primary wide-field imager and a high-precision guide scope. Its design ensures one outcome for either application: sharp, high-contrast images free of false color, making it a crucial tool for any advanced setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eApochromatic Optics: The FPL53 ED Doublet Core\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the GuideStar 61 is an air-spaced doublet lens featuring premium FPL53 glass. This is the exact same optical design that earned the Zenithstar 61 its reputation for producing stunningly sharp, high-contrast images. The result is a view completely free of distracting chromatic aberration, ensuring stars are tight pinpoints against a dark sky background, a critical requirement for both precise guiding and quality 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\u003eImaging Mechanics: Draw-Tube Focuser and Rotating Lens Assembly\u003c\/h3\u003e\n\u003cp\u003eEngineered for portability and simplicity, the GuideStar 61 features a practical draw-tube (push-pull) focuser for coarse adjustments, with a rotating lens assembly for fine-tuning focus. This lightweight system is ideal for guide cameras and smaller imaging cameras where robust, heavy focusers are unnecessary. The entire optical tube is CNC-machined from aluminum, providing a rigid and durable platform that holds collimation, and includes a Vixen\/Synta-style rail for easy mounting.\u003c\/p\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-Role Functionality: A Precision Guider and Portable Imager\u003c\/h3\u003e\n\u003cp\u003eThe GuideStar 61 is designed as a flexible, high-end solution for two distinct tasks. As a guide scope, its apochromatic optics deliver perfectly round guide stars, allowing your autoguiding software to make more accurate tracking corrections. As a primary imaging instrument, it becomes a powerful wide-field astrograph, capable of capturing entire nebulae or star clusters when paired with the optional Adjustable Flattener or 0.8x Reducer\/Flattener for the ZS61.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eGuideStar 61 vs. Zenithstar 61: Shared Optics, Different Missions\u003c\/h3\u003e\n\u003cp\u003eWhile both telescopes share the same superb FPL53 doublet lens, their mechanical systems are tailored for different purposes. The GuideStar 61 is the lighter, more portable option, with a simple and effective draw-tube focuser perfect for guiding or use with lightweight cameras. The Zenithstar 61, in contrast, incorporates a heavier, more precise rack-and-pinion focuser designed to handle larger cameras and accessories, making it the dedicated choice for primary deep-sky imaging.\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 William Optics GuideStar 61 and the Zenithstar 61?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eBoth models use the identical FPL53 ED doublet lens, so their optical quality is the same. The primary difference is mechanical: the \u003cstrong\u003eGuideStar 61\u003c\/strong\u003e has a lightweight draw-tube focuser designed for guiding and portability, while the \u003cstrong\u003eZenithstar 61\u003c\/strong\u003e has a more robust rack-and-pinion focuser to support heavier imaging cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan the GuideStar 61 be used as a primary imaging telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The GuideStar 61's FPL53 optics make it an excellent portable, wide-field imaging refractor. For optimal results across a larger sensor, it is best paired with an optional field flattener, such as the William Optics Adjustable Flattener for ZS61.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the draw-tube focuser on the GuideStar 61 work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe GuideStar 61 uses a simple and reliable draw-tube, or \"push-pull,\" focuser. You achieve coarse focus by sliding the tube in and out, then lock it. Fine focus adjustments are then made by rotating the lens cell assembly itself, allowing for precise focus on your guide star or imaging target.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would the GuideStar 61 perform for guiding on a large SCT imaging the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt would perform exceptionally well. The apochromatic FPL53 optics of the GuideStar 61 will produce very sharp, tight stars across the field of view of your guide camera. This allows your software to calculate a more accurate centroid, leading to smoother and more precise tracking corrections, which is essential for long exposures on a target like M31 with a long focal length SCT.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat accessories are needed to use the GuideStar 61 for imaging the North America Nebula (NGC 7000)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo image a large target like the North America Nebula, you would need a solid mount, a guide camera (if using it as a guide scope), and your primary astronomy camera. To ensure sharp stars to the edge of your frame, a dedicated field flattener like the Adjustable Flattener for ZS61 is highly recommended. The optional 0.8x reducer\/flattener would provide an even wider field of view to capture the entire nebula complex.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the FPL53 lens in the William Optics GuideStar 61 truly apochromatic?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The use of FPL53, a high-grade extra-low dispersion (ED) glass, in an air-spaced doublet configuration effectively eliminates false color (chromatic aberration). This provides images with sharp focus across the visual spectrum, high contrast, and no purple fringing around bright stars, meeting the definition of an apochromatic refractor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Options\u003c\/td\u003e\n\u003ctd\u003eRed, Gold, Blue\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\"\u003eGuideStar 61 Optical Tube Assembly\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\"\u003eSoft Carry Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eVixen\/Synta-style finder dovetail rail\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":"Red","offer_id":44967234339101,"sku":"WO-M-GS61-RD","price":631.0,"currency_code":"CAD","in_stock":true},{"title":"Gold","offer_id":44967234273565,"sku":"WO-M-GS61-GD","price":549.0,"currency_code":"CAD","in_stock":true},{"title":"Blue","offer_id":44967234306333,"sku":"WO-M-GS61-BU","price":549.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-GuideStar-61-1.jpg?v=1722277641"},{"product_id":"william-optics-flat4-draw-tube-adapter-for-gt102-flt-132-black-for-3-v-power-focuser","title":"William Optics Flat4 Draw Tube Adapter for GT102, FLT 132 - Black for 3\" V-Power Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects William Optics Flat4 Flattener to Draw Tube\u003c\/li\u003e\n\u003cli\u003eDesigned for the 3\" V-Power Focuser\u003c\/li\u003e\n\u003cli\u003eCompatible with GT102 \u0026amp; FLT 132 (2017 Models)\u003c\/li\u003e\n\u003cli\u003eEnsures a Secure, Threaded Imaging Train\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eWilliam Optics Flat4 Draw Tube Adapter for GT102, FLT 132 - Black for 3\" V-Power Focuser\u003c\/h2\u003e\n\u003cp\u003eThis William Optics Flat4 Draw Tube Adapter provides the essential mechanical link for attaching your Flat4 flattener to the 3\" V-Power focuser on Gran Turismo 102 and FLT 132 refractors from the 2017 model year.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDedicated Adapter for Flat4 on 3\" V-Power Focusers\u003c\/h3\u003e\n\u003cp\u003eAchieve a rigid, secure connection for your astrophotography setup. This adapter is purpose-built to join the William Optics Flat4 field flattener directly to the draw tube of specific telescopes, eliminating potential flexure or misalignment that can occur with generic solutions.\u003c\/p\u003e\n\u003cp\u003eEngineered exclusively for the 2017 model year William Optics GT102 and FLT 132 refractors equipped with the 3\" V-Power focuser, this component ensures correct spacing and a stable imaging train. Using the correct, manufacturer-specified adapter is critical for capturing sharp, round stars across your entire field of 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\"\u003eWhich telescopes is the WO-AD4-A006-L00BL03 adapter compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is specifically designed for the \u003cstrong\u003eWilliam Optics Gran Turismo 102\u003c\/strong\u003e and \u003cstrong\u003eFLT 132\u003c\/strong\u003e refractors from the \u003cstrong\u003e2017 model year\u003c\/strong\u003e that are equipped with the \u003cstrong\u003e3\" V-Power focuser\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of this William Optics Draw Tube Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts sole purpose is to securely connect a William Optics \u003cstrong\u003eFlat4 field flattener\u003c\/strong\u003e to the draw tube of a compatible telescope. This creates a rigid, threaded connection essential for astrophotography, preventing tilt and maintaining optical alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with newer William Optics telescopes or different focusers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is not guaranteed to work with models other than the specified 2017 GT102 and FLT 132 with the 3\" V-Power focuser. William Optics produces different adapters for various telescope and focuser combinations to ensure correct mechanical fit and optical spacing.\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\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eWO-AD4-A006-L00BL03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDraw Tube Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics GT102, FLT 132 (2017 Models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Compatibility\u003c\/td\u003e\n\u003ctd\u003e3\" V-Power Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Compatibility\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics Flat4 Field Flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\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 Flat4 Draw Tube 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":44967234404637,"sku":"WO-AD4-A006-L00BL03","price":88.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"william-optics-flat4-draw-tube-adapter-for-gt102-flt-132-blue-for-3-v-power-focuser","title":"William Optics Flat4 Draw Tube Adapter for GT102, FLT 132 - Blue for 3\" V-power Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Flat4 Flattener to 3\" V-Power Focuser\u003c\/li\u003e\n\u003cli\u003eCompatible with William Optics GT102 \u0026amp; FLT 132\u003c\/li\u003e\n\u003cli\u003eEngineered for 2017 Telescope Models\u003c\/li\u003e\n\u003cli\u003eSecure Threaded Attachment for Imaging\u003c\/li\u003e\n\u003cli\u003eAnodized Blue Finish\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 Flat4 Draw Tube Adapter for GT102, FLT 132 - Blue for 3\" V-power Focuser\u003c\/h2\u003e\n\u003cp\u003eThis William Optics adapter provides the essential threaded connection between a Flat4 field flattener and the 3\" V-Power focuser drawtube. It is specifically engineered for the 2017 models of the William Optics Gran Turismo 102 and FLT 132 refractors, ensuring a perfect mechanical and cosmetic match.\u003c\/p\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-Thread Connection for the 3\" V-Power Focuser\u003c\/h3\u003e\n\u003cp\u003eFor astrophotography, a rigid imaging train is critical to prevent tilt and flexure. This adapter replaces standard compression fittings, creating a solid, direct-thread attachment from your Flat4 flattener to the telescope's 3\" V-Power focuser. This secure link is the foundation for achieving sharp, round stars across your entire image frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAnodized Blue Finish for 2017 GT102 \u0026amp; FLT 132 Models\u003c\/h3\u003e\n\u003cp\u003eDesigned as an original equipment manufacturer (OEM) component, this adapter is purpose-built for specific William Optics telescopes. The anodized blue finish is formulated to exactly match the livery of the 2017 versions of the GT102 and FLT 132 refractors. If you own one of these models, this is the correct adapter to integrate your Flat4 flattener seamlessly.\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 Flat4 adapter fit my William Optics GT102 from 2018?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this specific adapter (WO-AD4-A006-L00BU03) is designed for the \u003cstrong\u003e2017 models\u003c\/strong\u003e of the GT102 and FLT 132 with the 3\" V-Power focuser. Later models may use a different thread pitch or focuser design, requiring a different adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich focuser is this William Optics adapter compatible with?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is made exclusively for the William Optics \u003cstrong\u003e3\" V-Power focuser\u003c\/strong\u003e that was supplied with the 2017 GT102 and FLT 132 telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat field flattener does the WO-AD4-A006-L00BU03 connect to?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is a draw tube adapter designed to connect a William Optics \u003cstrong\u003eFlat4 series\u003c\/strong\u003e field flattener or flattener\/reducer to the telescope's focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy do I need this adapter to image with my FLT 132?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eTo ensure a rigid, flex-free imaging train. Using this threaded adapter eliminates the potential for sag or tilt that can occur with slip-fit or compression ring-style adapters, which is critical for maintaining a flat field and sharp focus during long exposures.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this Flat4 adapter compatible with a William Optics GT81?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is not compatible with the GT81. It is designed only for the \u003cstrong\u003eWilliam Optics GT102 and FLT 132 (2017 models)\u003c\/strong\u003e. The GT81 requires a different adapter due to its different focuser and optical design.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the color of this adapter a match for current William Optics telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter features an anodized \u003cstrong\u003eblue finish\u003c\/strong\u003e intended to match the specific color scheme of the 2017 model year telescopes. It may not be a perfect cosmetic match for newer or older models with different colorways (e.g., red, gold, or space gray).\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\u003eWilliam Optics GT102 \u0026amp; FLT 132 (2017 Models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Compatibility\u003c\/td\u003e\n\u003ctd\u003e3\" V-Power Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlattener Compatibility\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics Flat4 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eWO-AD4-A006-L00BU03\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\/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":44967234502941,"sku":"WO-AD4-A006-L00BU03","price":88.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Flat4-Draw-Tube-Adapter-for-GT102-FLT-132-Blue-for-3-inch-V-power-Focuser-AD4-A006-L00BU03-1__25851.1596133287.1280.1280.jpg?v=1684339257"},{"product_id":"william-optics-flat4-draw-tube-adapter-for-flt-gold-for-2007-2016-models","title":"William Optics Flat4 Draw Tube Adapter for FLT (Gold) for 2007-2016 Models","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely connects the Flat4 Field Flattener to the draw tube\u003c\/li\u003e\n\u003cli\u003eDesigned for William Optics FLT 98, 110, 132, and 152 models\u003c\/li\u003e\n\u003cli\u003eCompatible with telescopes manufactured between 2007 and 2016\u003c\/li\u003e\n\u003cli\u003eMachined aluminum construction\u003c\/li\u003e\n\u003cli\u003eAnodized gold finish to match original telescope trim\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 Flat4 Draw Tube Adapter for FLT (Gold)\u003c\/h2\u003e\n\u003cp\u003eThis William Optics Flat4 Draw Tube Adapter provides the essential mechanical link for attaching a Flat4 series field flattener to specific William Optics FLT refractors. It is engineered for FLT models including the 98, 110, 132, and 152, specifically for telescopes produced between 2007 and 2016. The adapter ensures a secure, threaded connection directly to the focuser's draw tube, establishing the correct spacing and alignment for a flat imaging 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\u003eFor FLT 98, 110, 132 \u0026amp; 152 Telescopes (2007-2016)\u003c\/h3\u003e\n\u003cp\u003eThis adapter is a required component for imagers using older-generation William Optics FLT quadruplet refractors who wish to use the compatible Flat4 flattener. Its threading and dimensions are precisely matched to the focusers on FLT models manufactured from 2007 to 2016, including the FLT98, FLT110, FLT132, and FLT152. The anodized gold finish is designed to cosmetically match the original trim and accents of these classic William Optics telescopes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecific Compatibility:\u003c\/strong\u003e This part is not universal. It is designed only for the specified FLT models and years; it will not work with other William Optics telescopes or focusers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging Requirement:\u003c\/strong\u003e Without this adapter, you cannot properly connect the Flat4 flattener to the telescope's draw tube, making it impossible to achieve a corrected field for astrophotography.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the William Optics WO-AD4-A006-L00GD03 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is a specialized mechanical part that allows you to securely thread a \u003cstrong\u003eWilliam Optics Flat4 field flattener\u003c\/strong\u003e onto the focuser draw tube of specific FLT telescopes (models 98, 110, 132, and 152) made between 2007 and 2016. It is required for astrophotography with that combination of equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Flat4 adapter fit my 2010 William Optics FLT110?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. This adapter is specified for all William Optics FLT 98, 110, 132, and 152 models manufactured from \u003cstrong\u003e2007 through 2016\u003c\/strong\u003e, so your 2010 model is fully compatible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter compatible with newer William Optics telescopes made after 2016?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This adapter is designed specifically for the focuser thread pattern and dimensions of the 2007-2016 generation of FLT telescopes. Newer models use different focuser designs and require different adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install this Flat4 adapter on my FLT132?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eInstallation typically involves unthreading the standard 2\" visual back or eyepiece holder from the end of your FLT132's focuser draw tube. This adapter then threads directly onto the exposed male threads of the draw tube, providing the correct connection for your Flat4 flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the gold color of this adapter match the original telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the gold anodized finish was intentionally chosen to match the distinctive gold trim and lens cell accents found on the William Optics FLT series telescopes from that manufacturing period.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter to connect a different brand of flattener to my FLT98?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis is not recommended. The adapter is designed to provide the correct threading and spacing for the William Optics Flat4 flattener. Using it with another flattener will likely result in incorrect spacing, leading to poor off-axis star shapes and other imaging artifacts.\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 Flat4 Draw Tube Adapter for FLT (Gold)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWO-AD4-A006-L00GD03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eAnodized Gold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Compatibility\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics FLT 98, FLT 110, FLT 132, FLT 152\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Year Compatibility\u003c\/td\u003e\n\u003ctd\u003e2007 - 2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlattener Compatibility\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics Flat4 Series\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 Flat4 Draw Tube Adapter for FLT (Gold)\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\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNo downloads available for this product.\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":44967237091613,"sku":"WO-AD4-A006-L00GD03","price":88.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Flat4-Draw-Tube-Adapter-for-FLT-Gold-for-2007-2016-Models-AD4-A006-L00GD03-1__03709.1596133287.1280.1280.jpg?v=1684339579"},{"product_id":"william-optics-image-plane-tilt-adjuster","title":"William Optics Image Plane Tilt Adjuster","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned exclusively for the William Optics RedCat 51 astrograph\u003c\/li\u003e\n\u003cli\u003eCorrects image plane tilt for perfectly round stars across the frame\u003c\/li\u003e\n\u003cli\u003eAdds only 12.2 mm of optical path length\u003c\/li\u003e\n\u003cli\u003eConnects via M56 female thread to the telescope\u003c\/li\u003e\n\u003cli\u003eProvides a standard M54 male thread for your camera or filter wheel\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 Image Plane Tilt Adjuster for RedCat 51\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Image Plane Tilt Adjuster is an essential upgrade for imagers using the RedCat 51, adding only 12.2 mm of optical length to the imaging train. It connects directly to the telescope's native M56 thread and provides a standard M54 output for your camera, enabling precise, independent adjustment to eliminate sensor tilt and achieve a perfectly flat 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\u003eAchieve a Perfectly Flat Field: The 12.2mm RedCat 51 Tilt Adjuster\u003c\/h3\u003e\n\u003cp\u003eThe fast optical system of the RedCat 51 is extremely sensitive to sensor tilt, where even a few microns of misalignment can result in elongated stars in the corners of an otherwise sharp image. This tilt adjuster provides the fine control needed to make the camera sensor perfectly orthogonal to the telescope's optical axis, ensuring the RedCat's flat-field correction is fully realized from edge to edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSeamless Integration with M56 and M54 Threads\u003c\/h3\u003e\n\u003cp\u003eEngineered as a drop-in solution, this adjuster features an M56 female thread on the light-in side that attaches directly to the RedCat 51's focuser drawtube. The light-out side provides a male M54 thread, a common standard for connecting to most filter wheels, off-axis guiders, and dedicated astronomy cameras. This robust, threaded connection maintains rigidity while allowing for the necessary micro-adjustments to perfect your images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the William Optics Tilt Adjuster for the RedCat 51?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts purpose is to correct for sensor tilt. This is a slight misalignment between your camera's sensor and the telescope's focal plane, which can cause stars to be sharp in the center of your image but elongated or out-of-focus in the corners. This device allows you to make fine adjustments to align the sensor perfectly, ensuring sharp stars across the entire field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know if I need this tilt adjuster for my RedCat 51?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIf you notice that stars in the corners of your images are not perfectly round while the stars in the center are, you likely have sensor tilt. The effect is most noticeable with large sensors and the fast optics of the RedCat 51. This adjuster is the definitive solution to that problem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this WO-M-FD-RC51 tilt adjuster work with other telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adjuster is designed specifically as an upgrade for the William Optics RedCat 51 astrograph. Its threading (M56) and optical length (12.2 mm) are engineered to integrate seamlessly into that specific optical train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 12.2 mm optical length of this tilt adjuster affect my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 12.2 mm of length it adds must be factored into your total back focus distance. You will need to reduce the length of your other extension tubes by 12.2 mm to ensure your camera sensor remains at the correct distance from the RedCat 51's final lens element.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the input and output threads on the William Optics Tilt Adjuster?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adjuster has the following connections:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope Side (Light-In):\u003c\/strong\u003e M56 x 0.75 female thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Side (Light-Out):\u003c\/strong\u003e M54 x 0.75 male thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm imaging the Andromeda Galaxy (M31) with my RedCat 51 and a full-frame sensor, why is this adjuster critical?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eImaging a large target like the Andromeda Galaxy (M31) with a full-frame sensor pushes the RedCat 51's image circle to its limits. Any minor sensor tilt will be immediately obvious as misshapen stars in the corners of your frame, ruining the large, flat field you're trying to capture. This tilt adjuster is critical for ensuring that the thousands of stars across M31's spiral arms are rendered as perfect pinpoints.\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\u003eWilliam Optics RedCat 51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Connection (Light-In)\u003c\/td\u003e\n\u003ctd\u003eM56 x 0.75 Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection (Light-Out)\u003c\/td\u003e\n\u003ctd\u003eM54 x 0.75 Male Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e12.2 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\"\u003eWilliam Optics Image Plane Tilt Adjuster\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":44967237681437,"sku":"WO-M-FD-RC51","price":83.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Image-Plane-Tilt-Adjuster-M-FD-RC51-1__19291.1596133294.1280.1280.jpg?v=1684339589"},{"product_id":"william-optics-4-extension-tube-for-flt-series","title":"William Optics 4\" Extension Tube for FLT Series","description":"\u003cul\u003e\n    \u003cli\u003e\n        4\" extension tube designed for William Optics FLT Series\n    \u003c\/li\u003e\n    \u003cli\u003e\n        Provides additional back focus for various optical setups\n    \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\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n    \u003cli class=\"active\"\u003e\n        \u003cp\u003e\n            The William Optics 4\" Extension Tube for FLT Series is a precision-engineered accessory designed to provide additional back focus for your William Optics FLT telescopes. This extension tube is essential for achieving the correct focus when using various imaging accessories, ensuring optimal performance and flexibility in your astrophotography setup.\n        \u003c\/p\u003e\n        \u003cdiv class=\"warning\"\u003e\n            \u003cimg alt=\"Disclaimer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/warning-logo.svg?v=1714663206\" width=\"25px\"\u003e\n            \u003cp\u003e\n                Telescopes and accessories sold separately.\n            \u003c\/p\u003e\n        \u003c\/div\u003e\n        \n        \u003cdiv\u003e\n            \u003ch3\u003e\n                Features\n            \u003c\/h3\u003e\n            \u003chr\u003e\n            \u003cdiv class=\"two-columns-section\"\u003e\n                \u003cdiv class=\"text-side-2\"\u003e\n                    \u003cp\u003e\n                        Specifically designed for use with William Optics FLT Series telescopes, ensuring compatibility and a secure fit.\n                    \u003c\/p\u003e\n                    \u003cp\u003e\n                        Provides an additional 4 inches of back focus, allowing for the integration of various optical accessories such as cameras, focal reducers, and filters.\n                    \u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"image-side-2\" style=\"text-align: start;\"\u003e\n                    \u003cimg alt=\"William Optics 4\\\" extension tube for flt series src=\"https:\/\/davidastro.com\/cdn\/shop\/products\/William-Optics-4-inch-Extension-Tube-for-FLT-Series-P-EXFLT-2__44358.1596133295.1280.1280_832x832.jpg?v=1684339595\"\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n\n            \u003cdiv style=\"background-color: #0a0001; border-radius: 5px;\"\u003e\n                \u003ch3 style=\"color: white!important;\"\u003e\n                    High-Quality Construction\n                \u003c\/h3\u003e\n                \u003chr\u003e\n                \u003cdiv class=\"two-columns-section\"\u003e\n                    \u003cdiv class=\"image-side-2\" style=\"text-align: start;\"\u003e\n                        \u003cimg alt=\"William Optics 4\\\" extension tube for flt series src=\"https:\/\/davidastro.com\/cdn\/shop\/products\/William-Optics-4-inch-Extension-Tube-for-FLT-Series-P-EXFLT-1__16520.1596133295.1280.1280_832x832.jpg?v=1684339595\"\u003e\n                    \u003c\/div\u003e\n                    \u003cdiv class=\"text-side-2\"\u003e\n                        \u003cp style=\"color: white!important;\"\u003e\n                            Made from durable materials to ensure longevity and reliable performance in various astrophotography setups.\n                        \u003c\/p\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003ch3\u003e\n            Ease of Use\n        \u003c\/h3\u003e\n        \u003chr\u003e\n        \u003cp\u003e\n            Simple to attach and detach, making it a user-friendly addition to your astrophotography equipment.\n        \u003c\/p\u003e\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967237746973,"sku":"WO-P-EXFLT","price":92.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-4-inch-Extension-Tube-for-FLT-Series-P-EXFLT-1__16520.1596133295.1280.1280.jpg?v=1684339595"},{"product_id":"william-optics-m63m-to-m48m-photo-adapter","title":"William Optics M63(M) to M48(M) Photo Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdds 80mm of Optical Length\u003c\/li\u003e\n\u003cli\u003eConnects to M63 Female Threads\u003c\/li\u003e\n\u003cli\u003eOutputs to M48 Male T-Threads\u003c\/li\u003e\n\u003cli\u003eEnables Focus Without a Field Flattener\u003c\/li\u003e\n\u003cli\u003eDesigned for William Optics Doublet \u0026amp; Triplet 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\u003eWilliam Optics M63(M) to M48(M) Photo Adapter\u003c\/h2\u003e\n\u003cp\u003eThe William Optics M63 to M48 Photo Adapter provides a precise 80 mm of optical length, creating the correct spacing to achieve focus when imaging without a field flattener. This adapter features M63 female threads on the telescope side and standard M48 male threads on the camera side, making it an essential component for direct-to-camera imaging with many William Optics doublet and triplet 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\u003eThe 80mm Solution for Flattener-Free Imaging\u003c\/h3\u003e\n\u003cp\u003eWhen you remove a field flattener from your imaging train, the focal plane of your telescope shifts significantly inward. This adapter compensates by adding exactly 80 mm of extension, pushing your camera sensor back to the new point of sharp focus. It's the ideal solution for visual-first observers who want to attach a camera for planetary work or casual deep-sky imaging without reinvesting in a full corrective setup.\u003c\/p\u003e\n\u003cp\u003eThe trade-off is straightforward: you achieve focus, but without the edge-of-field correction a flattener provides. For imagers using cameras with smaller sensors or those targeting central objects like Jupiter or the Ring Nebula (M57), this is often an acceptable compromise to get a camera attached and working.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM63 Female to M48 Male: Direct Camera Connection\u003c\/h3\u003e\n\u003cp\u003eThis adapter is engineered for a specific, secure fit. The M63 female threads on the light-in side are designed to screw onto focusers or accessories that terminate in a male M63 thread. The light-out side provides a standard M48x0.75 male thread, the universal standard for connecting to DSLR\/mirrorless T-rings and dedicated astronomy cameras.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope Side Connection:\u003c\/strong\u003e M63 Female Thread (screws onto an M63 male thread).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera Side Connection:\u003c\/strong\u003e M48 Male Thread (screws into a female T-ring or camera nosepiece).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild:\u003c\/strong\u003e Machined from black-anodized aluminum to minimize internal reflections and maintain a rigid connection.\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 the 80mm William Optics Photo Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need this adapter specifically when you want to do photography \u003cstrong\u003ewithout a field flattener or reducer\u003c\/strong\u003e in the optical path. Removing those components changes the focus point, and this 80 mm extension tube provides the exact distance required to bring a camera sensor to the new focal plane on many William Optics doublet and triplet refractors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich telescopes is the WO-P-PAM-63-48 adapter designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed specifically for William Optics doublet and triplet refractors that use an M63 thread on their focuser assembly. It is not a universal part; its 80 mm length is calculated to match the optical requirements of these specific telescopes when a flattener is removed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of camera can I attach with this M63 to M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter terminates in a standard \u003cstrong\u003eM48 male thread\u003c\/strong\u003e (also known as a \"wide T-mount\"). This allows you to connect any camera that can be fitted with a female M48 T-ring, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDSLR and mirrorless cameras (with the appropriate M48 T-ring for your camera brand).\u003c\/li\u003e\n\u003cli\u003eMost dedicated CMOS and CCD astronomy cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the William Optics Photo Adapter correct for field curvature?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it does not. This is purely a mechanical extension tube. Its sole purpose is to add 80 mm of length to achieve focus. It contains no optics and will not flatten the field of view. You will see star distortion at the edges of the field, especially with larger camera sensors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the William Optics M63 to M48 adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe adapter's \u003cstrong\u003eM63 female threads\u003c\/strong\u003e screw directly onto the corresponding M63 male thread on your telescope's focuser drawtube or visual back. You then thread your M48 T-ring and camera onto the adapter's M48 male threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 80mm length of the WO-P-PAM-63-48 adapter adjustable?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is a fixed-length adapter. The 80 mm optical length is a precise value required to achieve focus on specific William Optics telescopes when their flatteners are removed. It is not designed for general-purpose use where variable spacing is needed.\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\u003eLight-In Side\u003c\/td\u003e\n\u003ctd\u003eM63 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight-Out Side\u003c\/td\u003e\n\u003ctd\u003eM48 (male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e80 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\"\u003eWilliam Optics M63 to M48 Photo Adapter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eNo downloads available for this product.\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":44967237878045,"sku":"WO-P-PAM-63-48","price":92.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-M63-Male-to-M48-Male-Photo-Adapter-P-PAM63-48-1__24722.1596133296.1280.1280.jpg?v=1684339318"},{"product_id":"william-optics-stl-adapter-for-flt-flattener","title":"William Optics STL Adapter for FLT Flattener","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects SBIG STL-11000 Series CCD Cameras\u003c\/li\u003e\n\u003cli\u003eAttaches to P-FLAT68 Field Flatteners via M80 Female Thread\u003c\/li\u003e\n\u003cli\u003eProvides a Precise 69 mm Optical Path Length\u003c\/li\u003e\n\u003cli\u003eSolid, Single-Piece Machined Construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eWilliam Optics STL Adapter for FLT Flattener\u003c\/h2\u003e\n\u003cp\u003eThe William Optics STL Adapter for FLT Flattener provides a dedicated, secure connection between your SBIG STL-11000 series camera and a William Optics P-FLAT68 field flattener. This precision-machined component establishes the exact 69 mm optical length required for optimal performance, connecting to the flattener via its female M80 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eRigid Connection and 69mm Spacing for the P-FLAT68 Flattener\u003c\/h3\u003e\n\u003cp\u003eThis adapter is engineered to solve the specific connection and spacing challenge of pairing the P-FLAT68 field flattener with large-format SBIG STL cameras. The female M80 threads ensure a direct, rigid attachment to the flattener body, eliminating the potential for image-degrading flexure that can occur with stacked generic adapters.\u003c\/p\u003e\n\u003cp\u003eAchieving correct back focus is critical for a perfectly flat field, and this adapter delivers the required 69 mm of optical length in a single, solid component. This guarantees that the distance from the flattener's final lens element to your STL-11000's sensor plane is precisely set for sharp, pinpoint stars from corner to corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary function of the William Optics STL Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter is designed specifically to connect an \u003cstrong\u003eSBIG STL-11000 series CCD camera\u003c\/strong\u003e to a \u003cstrong\u003eWilliam Optics P-FLAT68 field flattener\u003c\/strong\u003e. It serves two critical roles: providing a secure mechanical connection and establishing the precise \u003cstrong\u003e69 mm optical spacing\u003c\/strong\u003e required for optimal flat-field correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the WO-P-STL adapter compatible with other flatteners or cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a dedicated adapter. It is engineered with \u003cstrong\u003eM80 female threads\u003c\/strong\u003e specifically for the P-FLAT68 flattener and the unique flange mount of the SBIG STL-11000 camera. Using it with other components is not recommended as it will likely result in an incorrect back focus distance and an inability to physically connect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a William Optics FLT refractor and a P-FLAT68 flattener. Is this the right adapter for my SBIG STL-11000 camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the exact component you need for that setup. The WO-P-STL adapter bridges the M80 thread on the P-FLAT68 flattener to the SBIG STL camera body and sets the critical \u003cstrong\u003e69 mm back focus distance\u003c\/strong\u003e required by that specific optical combination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the 69 mm optical length of the WO-P-STL adapter so important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eField flatteners like the P-FLAT68 must be placed at a very specific distance from the camera sensor to function correctly. The \u003cstrong\u003e69 mm optical length\u003c\/strong\u003e of this adapter is the prescribed spacing needed to ensure stars are sharp across the entire large sensor of an STL-11000, effectively correcting for the field curvature introduced by the telescope's main optics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I image large targets like the Andromeda Galaxy (M31) with the WO-P-STL adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. By correctly connecting your P-FLAT68 flattener to your STL-11000 camera with this adapter, you will achieve the flat field necessary to capture large deep-sky objects like the \u003cstrong\u003eAndromeda Galaxy (M31)\u003c\/strong\u003e or the \u003cstrong\u003eNorth American Nebula (NGC 7000)\u003c\/strong\u003e without distorted stars at the edges of your frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy can't I just use generic M80 adapters to create 69 mm of spacing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile theoretically possible, stacking multiple generic adapters introduces several threaded junctions, which are potential sources of tilt and flexure. This single, solid adapter provides a much more rigid and reliable connection, which is critical to maintaining optical alignment when imaging with a heavy camera like the \u003cstrong\u003eSBIG STL-11000\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWO-P-STL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eSBIG STL-11000 CCD Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eM80 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e69 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\"\u003eWilliam Optics STL Adapter for FLT Flattener\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":44967237910813,"sku":"WO-P-STL","price":190.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-STL-1100-Adapter-for-FLT-FF-P-STL-1__84013.1596133296.1280.1280.jpg?v=1684339321"},{"product_id":"william-optics-48mm-t-mount-for-nikon-f","title":"William Optics 48mm T-Mount for Nikon F","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 Accessories to Nikon F-Mount Cameras\u003c\/li\u003e\n\u003cli\u003ePrecisely machined 8.2 mm optical length achieves exact 55mm back focus when combined with camera\u003c\/li\u003e\n\u003cli\u003eFemale M48 x 0.75 Threads (Telescope Side)\u003c\/li\u003e\n\u003cli\u003eMale Nikon F-Mount Bayonet (Camera Side)\u003c\/li\u003e\n\u003cli\u003eWide 48mm Aperture Prevents Vignetting\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 48mm T-Mount for Nikon F\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 48mm T-Mount for Nikon F provides a secure, direct connection from any M48 x 0.75 threaded accessory to a Nikon F-mount camera body. Consuming exactly 8.2 mm of optical path, it works seamlessly with your DSLR camera to achieve the standard 55 mm back focus for flat-field 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\u003ePrecision Spacing: Built for Standard 55mm Back Focus\u003c\/h3\u003e\n\u003cp\u003eAchieving the standard 55mm back focus distance required by most field flatteners and reducers demands exact component spacing. This William Optics T-Mount is engineered with an optical length of 8.2 mm, which combines directly with a Nikon F-mount DSLR's 46.5 mm flange distance to yield the required 55 mm total back focus (8.2 mm + 46.5 mm = 54.7 mm ~ 55 mm)—no additional spacers needed.\u003c\/p\u003e\n\u003cp\u003eBy delivering the exact 55 mm optical path out of the box when attached to your camera, this adapter removes guesswork and eliminates potential spacing errors that can introduce field curvature or other aberrations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSecure Connection for Full-Frame Sensors: M48 Threading\u003c\/h3\u003e\n\u003cp\u003eThe adapter features female M48 x 0.75 threads on the telescope side, providing a wider and more robust connection than standard M42 T-rings. This larger diameter is essential for fully illuminating full-frame sensors without vignetting, ensuring the entire field receives even light from your corrector.\u003c\/p\u003e\n\u003cp\u003eA secure threaded connection prevents any flexure or tilt that can occur with less rigid adapters, preserving the precise optical alignment needed for sharp stars corner-to-corner. This rigidity is especially important when supporting the weight of a DSLR camera throughout a long imaging 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\"\u003eHow do I use the William Optics 48mm Nikon F T-Mount to achieve 55mm of back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis T-mount provides \u003cstrong\u003e8.2 mm\u003c\/strong\u003e of optical length. A standard Nikon F-mount DSLR has a flange-to-sensor distance of 46.5 mm. When combined, the total optical path is 8.2 mm + 46.5 mm = \u003cstrong\u003e54.7 mm (~55 mm)\u003c\/strong\u003e. This delivers the required 55mm standard back focus directly from your corrector without requiring additional spacers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I choose this M48 T-Mount over a standard M42 T-ring for my full-frame Nikon D850?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe larger \u003cstrong\u003eM48 (48mm)\u003c\/strong\u003e opening is critical for preventing vignetting on full-frame sensors like the one in the Nikon D850. A smaller M42 T-ring can act as an aperture stop, physically blocking light and darkening the corners of your images. This M48 adapter ensures your full-frame sensor is completely illuminated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this T-Mount to connect my Nikon D5600 to a William Optics RedCat 51?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The RedCat 51 has a native M48 thread on the back. This T-mount will connect directly to the telescope, allowing you to securely attach your Nikon D5600 (which uses the F-mount) at the correct 55mm back focus distance directly without any additional spacers or adapters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this William Optics M48 T-Mount work with my Nikon Z-series mirrorless camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is designed specifically for the \u003cstrong\u003eNikon F-mount\u003c\/strong\u003e used on Nikon DSLR cameras. To connect an M48 thread to a Z-series camera, you would need a dedicated Nikon Z-mount T-adapter, or you could use this adapter in conjunction with a Nikon FTZ adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this William Optics T-mount have threads for 2\" filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this T-mount does not have internal threads for mounting filters inside it. Filters must be placed elsewhere in the optical train, such as in a dedicated filter drawer, filter wheel, or threaded onto the flattener\/corrector itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the thread pitch of the M48 connection on this T-Mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe M48 threads use the standard astronomical pitch of \u003cstrong\u003e0.75mm (M48x0.75)\u003c\/strong\u003e. This ensures compatibility with the vast majority of field flatteners, reducers, and other imaging accessories from William Optics and other manufacturers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eNikon F-Mount Bayonet (Male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e8.2 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\"\u003eWilliam Optics 48mm T-Mount for Nikon F\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":44967238009117,"sku":"WO-TM-NK-F-M48","price":54.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-48mm-T-Mount-for-Nikon-F-TM-NK-F-M48-1__88595.1596133297.1280.1280.jpg?v=1684339325"},{"product_id":"william-optics-m48-push-in-nosepiece-for-wo-2-diagonals-uniguide-scope","title":"William Optics M48 Push-in Nosepiece for WO 2\" Diagonals \u0026 UniGuide Scope","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 Threaded Accessories to 2\" Push-in Focusers\u003c\/li\u003e\n\u003cli\u003eFemale M48 Threads for 2\" Filter Attachment\u003c\/li\u003e\n\u003cli\u003eAdds a Fixed 36 mm of Optical Length\u003c\/li\u003e\n\u003cli\u003eMale M48 Threads on Camera Side\u003c\/li\u003e\n\u003cli\u003eDesigned for William Optics 2\" Diagonals \u0026amp; UniGuide Scope\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 M48 Push-in Nosepiece for WO 2\" Diagonals \u0026amp; UniGuide Scope\u003c\/h2\u003e\n      \u003cp\u003eThe William Optics M48 Push-in Nosepiece creates a secure, all-threaded connection between your M48-format imaging gear and a standard 2\" diagonal or focuser, adding a precise 36 mm to your optical path. This adapter eliminates the potential for tilt from compression rings or set screws by providing a rigid M48 male thread for your camera and a standard 2\" push-in barrel for your telescope.\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\u003eSecure M48 Threading for 2\" Diagonals and UniGuide Scopes\u003c\/h3\u003e\n      \u003cp\u003eThis nosepiece is engineered to solve a common flexure point in imaging trains. Instead of relying on a simple slip-fit nosepiece, you can thread your camera or filter wheel directly onto the adapter's M48 male threads for a solid, orthogonal connection. The female M48 threads on the telescope side also allow you to mount a 2\" filter inside the barrel, placing it at the front of your imaging train.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA Fixed 36mm Optical Path for Back Focus Calculations\u003c\/h3\u003e\n      \u003cp\u003eFor astrophotographers, every millimeter of the optical path counts. This nosepiece adds a known, fixed optical length of 36 mm, a critical value for achieving correct spacing with field flatteners and focal reducers. This precision removes the guesswork associated with variable-length adapters, ensuring you can accurately calculate and maintain your required back focus distance.\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 primary use for the William Optics M48 Push-in Nosepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eIts main purpose is to attach an accessory with M48 female threads, like a camera or filter wheel, to a standard 2\" push-in focuser or diagonal. It replaces standard smooth-sided nosepieces with a more secure threaded connection, which is especially important for preventing tilt with heavier imaging equipment.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 36mm optical length of this M48 nosepiece affect my imaging train?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003e36 mm optical length\u003c\/strong\u003e must be included in your total back focus calculation. If your focal reducer or flattener requires 55 mm of back focus, this adapter will consume 36 mm of that distance, leaving you with 19 mm for any remaining spacers and your camera's sensor depth.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I attach 2\" filters to this William Optics nosepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The light-in side of the adapter features \u003cstrong\u003eM48 (female) threads\u003c\/strong\u003e, which is the standard threading for 2\" astronomy filters. You can thread a filter directly into the barrel before inserting it into your diagonal or focuser.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M48 nosepiece work with my non-William Optics 2\" diagonal?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, most likely. While it is specifically designed for William Optics diagonals and the UniGuide scope, the male \u003cstrong\u003e2\" push-in barrel\u003c\/strong\u003e is a standard size and should fit any focuser or diagonal that accepts standard 2\" eyepieces and accessories.\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 M48 threaded nosepiece over a standard 2\" smooth-sided nosepiece?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA threaded connection provides superior security and alignment. Key advantages include:\u003c\/p\u003e\n    \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReduced Tilt:\u003c\/strong\u003e Eliminates the possibility of sensor tilt that can be introduced by set screws or unevenly tightened compression rings.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSecurity:\u003c\/strong\u003e Prevents your expensive camera or filter wheel from accidentally slipping out of the focuser.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs this William Optics adapter suitable for connecting my DSLR to my SCT's 2\" diagonal?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, this is an excellent application. You would need an M48 T-ring for your specific DSLR model. The signal path would be: SCT -\u0026gt; 2\" Diagonal -\u0026gt; This M48 Push-in Nosepiece -\u0026gt; M48 T-Ring -\u0026gt; DSLR Body. Just be sure that your SCT has enough inward focus travel to accommodate the \u003cstrong\u003e36 mm\u003c\/strong\u003e path length of the adapter plus your other components.\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\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWO-WD-DIG2A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLight-In Side (Telescope)\u003c\/td\u003e\n\u003ctd\u003eM48 (female) \/ 2\" Push-in (male)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLight-Out Side (Camera)\u003c\/td\u003e\n\u003ctd\u003eM48 (male)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Length\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\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\"\u003eM48 Push-in Nosepiece for WO 2\" Diagonals \u0026amp; UniGuide Scope\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":44967238041885,"sku":"WO-WD-DIG2A","price":54.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-M48-Push-in-Nosepiece-for-WO-2-inch-Diagonals-UniGuide-Scope-WD-DIG2A-1__59747.1596133331.1280.1280.jpg?v=1684339332"},{"product_id":"william-optics-m48-female-to-m42-male-adapter","title":"William Optics M48 Female to M42 Male Adapter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 Female Threads to M42 Male Threads\u003c\/li\u003e\n\u003cli\u003eAdds Only 5.3mm of Optical Path Length\u003c\/li\u003e\n\u003cli\u003eStandard 2\" Filter Thread (M48x0.75) to T-Thread (M42x0.75) Conversion\u003c\/li\u003e\n\u003cli\u003eMachined for a Rigid, Tilt-Free Connection\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 M48 Female to M42 Male Adapter\u003c\/h2\u003e\n\u003cp\u003eThe William Optics M48 Female to M42 Male Adapter provides a critical connection in your imaging train, stepping down from the 2-inch filter standard M48 thread to the widely used M42 T-thread. It achieves this conversion while adding only 5.3 mm of optical length, making it essential for maintaining precise back focus in demanding imaging systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eBridge M48 and M42 Gear with a Precise 5.3mm Path Length\u003c\/h3\u003e\n\u003cp\u003eThis adapter is the solution for integrating components with mismatched threads. It allows you to connect an accessory with female M48 threads, such as a field flattener or 2\" filter wheel, directly to a camera or T-ring that requires a male M42 T-thread interface.\u003c\/p\u003e\n\u003cp\u003eThe adapter's minimal 5.3 mm profile is a key design feature, consuming the smallest possible amount of your system's precious back focus. This is crucial when working with reducers or flatteners that have strict spacing requirements, ensuring you can reach focus and maintain a perfectly corrected field.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Conversion:\u003c\/strong\u003e Seamlessly adapts accessories with female M48x0.75 threads to devices with male M42x0.75 T-threads, such as DSLR T-rings and many astronomy cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimal Back Focus Consumption:\u003c\/strong\u003e The precisely defined 5.3 mm optical path makes it possible to integrate components without exceeding the critical back focus distance of your optical system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Connection:\u003c\/strong\u003e A rigid, threaded connection prevents the tilt and flexure that can ruin long exposures, which is crucial for maintaining a flat imaging field from edge to edge.\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 William Optics M48 to M42 Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary function is to connect an imaging train component with \u003cstrong\u003efemale M48 threads\u003c\/strong\u003e (like a field flattener or coma corrector) to a camera, T-ring, or other accessory that has \u003cstrong\u003emale M42 threads\u003c\/strong\u003e. It adds only 5.3 mm to the total optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eI have a William Optics flattener with M48 threads and need to connect my DSLR with an M42 T-ring. Is the WO-YE-M48-42 the right adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is the exact application for this adapter. It will step down the M48 thread on your flattener to the M42 thread on your T-ring, consuming just 5.3 mm of back focus in the process.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 5.3 mm optical length of this adapter affect my back focus calculation?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou must subtract the \u003cstrong\u003e5.3 mm optical length\u003c\/strong\u003e from your total available back focus. For example, if your flattener requires 55 mm of back focus, installing this adapter means you now have 49.7 mm remaining for any other components in your imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the William Optics M48 to M42 Adapter the same as a 2\" filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. While it uses the same M48 thread pitch as a standard 2\" filter, this adapter is a mechanical converter, not an optical element. It changes the thread type from M48 to M42 and does not alter the light passing through it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the WO-YE-M48-42 adapter to attach M42 accessories to my 2\" focuser drawtube?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNot directly. This adapter has a male M42 thread on the output and is designed to be threaded \u003cem\u003einto\u003c\/em\u003e an M42 female port on a camera or other accessory. To attach M42 accessories to a 2\" drawtube, you would typically need a 2\" nosepiece that terminates in an M42 male thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat are the thread pitches for the M48 and M42 sides of this adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile not listed in the specifications, M48 and M42 threads used in astronomy equipment almost universally use a \u003cstrong\u003e0.75mm pitch\u003c\/strong\u003e. This adapter is designed for full compatibility with standard M48x0.75 (2\" filter) threads and M42x0.75 (T-thread) standards.\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003eWO-YE-M48-42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Thread (Light-In Side)\u003c\/td\u003e\n\u003ctd\u003eM48 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Thread (Light-Out Side)\u003c\/td\u003e\n\u003ctd\u003eM42 (male)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e5.3 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\"\u003eWilliam Optics M48 Female to M42 Male 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\/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":44967238140189,"sku":"WO-YE-M48-42","price":21.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-M48-Female-to-M42-Male-Adapter-YE-M48-42-1__95751.1596133298.1280.1280.jpg?v=1684339341"},{"product_id":"william-optics-m63-female-to-2-push-in-adapter-for-p-flat6aiii","title":"William Optics M63 Female to 2\" Push-in Adapter for P-FLAT6AIII","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects P-FLAT6AIII Flattener to 2\" Focuser\u003c\/li\u003e\n\u003cli\u003eFemale M63 Threads for Flattener Connection\u003c\/li\u003e\n\u003cli\u003eMale 2\" Push-in Barrel for Focuser\u003c\/li\u003e\n\u003cli\u003eInternal M48 Female Threads for 2\" Filters\u003c\/li\u003e\n\u003cli\u003eProvides 46.6 mm of Optical Length\u003c\/li\u003e\n\u003cli\u003eCondition: Used\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 M63 Female to 2\" Push-in Adapter for P-FLAT6AIII - Used\u003c\/h2\u003e\n\u003cp\u003eThis used William Optics adapter provides the critical mechanical connection between your P-FLAT6AIII field flattener and any standard 2\" telescope focuser. It features a female M63 thread on the flattener side and contributes a precise optical length of 46.6 mm, ensuring you can achieve the correct back focus for a flat 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\u003eSecure Your P-FLAT6AIII with 46.6mm of Spacing\u003c\/h3\u003e\n\u003cp\u003eEngineered for a perfect fit, this adapter allows you to integrate the powerful P-FLAT6AIII flattener into an imaging train that terminates in a 2\" focuser. The female M63 threads attach directly to the flattener, while the male 2\" nosepiece slides securely into your telescope's drawtube. The adapter's body provides a fixed 46.6 mm of optical path length, a key distance for correct spacing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Filter Threads:\u003c\/strong\u003e The light-in side of the adapter features standard M48 female threads, allowing you to mount 2\" filters inside the optical path, directly in front of the flattener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility Warning:\u003c\/strong\u003e This adapter is not compatible with William Optics \"Twenty Years Anniversary Edition\" telescopes. Please confirm your telescope model is not an Anniversary Edition before purchasing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsed Condition:\u003c\/strong\u003e This is a pre-owned item. It is fully functional but may show minor cosmetic signs of use, such as small marks on the barrel from focuser set screws.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the purpose of the William Optics M63 to 2\" adapter for P-FLAT6AIII?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter allows you to connect the \u003cstrong\u003eWilliam Optics P-FLAT6AIII\u003c\/strong\u003e field flattener, which has an M63 male thread, to a standard \u003cstrong\u003e2\" telescope focuser\u003c\/strong\u003e. It also provides a specific \u003cstrong\u003e46.6 mm\u003c\/strong\u003e of optical length required for proper spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this adapter with my William Optics GT81 Twenty Years Anniversary Edition telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e This adapter is explicitly not compatible with any of the \"Twenty Years Anniversary Edition\" telescopes from William Optics. You will need a different adapter for those specific models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the 46.6 mm optical length of this M63 adapter account for the full back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the 46.6 mm is the contribution of this adapter alone. The P-FLAT6AIII has a total back focus requirement (typically 55 mm) that must be achieved by adding this adapter plus any other necessary spacers and camera adapters to reach the sensor plane.\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 this William Optics M63 to 2\" adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The adapter is equipped with standard \u003cstrong\u003eM48 female threads\u003c\/strong\u003e on the telescope side (inside the 2\" barrel), allowing you to securely mount any standard 2\" astronomy filter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install this adapter between my William Optics Zenithstar 103 and the P-FLAT6AIII?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, thread the female M63 end of the adapter onto the male M63 threads of your P-FLAT6AIII flattener until it is snug. Then, slide the 2\" male barrel of the adapter assembly into your Zenithstar 103's 2\" focuser and lock it in place with the focuser's set screws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does \"Used\" condition mean for this WO-YE-M63F-2IN-PI adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\"Used\" means the adapter is fully functional but is pre-owned and will likely show cosmetic signs of previous use. This may include minor scratches or scuffs on the black anodizing or marks on the 2\" barrel from being inserted into a focuser. The threads will be clean and fully operational.\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 Code\u003c\/td\u003e\n\u003ctd\u003eWO-YE-M63F-2IN-PI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eUsed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics P-FLAT6AIII Flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncompatible With\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics Twenty Years Anniversary Edition Telescopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight-In Side Connection\u003c\/td\u003e\n\u003ctd\u003e2\" Push-in (male) with internal M48 (female) filter threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight-Out Side Connection\u003c\/td\u003e\n\u003ctd\u003eM63 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e46.6 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\"\u003eWilliam Optics M63 Female to 2\" Push-in 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\/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":44967238304029,"sku":"WO-YE-M63F-2IN-PI","price":66.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-M63-Female-to-2-inch-Push-in-Adapter-for-P-FLAT6AIII-YE-M63F-2IN-PI-1__95761.1596133299.1280.1280.jpg?v=1684339348"},{"product_id":"william-optics-super-high-precision-copper-t-mount-for-canon-eos-full-frame","title":"William Optics Super High Precision COPPER T-Mount for Canon EOS Full Frame","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSolid Copper Construction for Maximum Rigidity\u003c\/li\u003e\n\u003cli\u003eM48 (2\") Female Thread for Wide-Field Correctors\u003c\/li\u003e\n\u003cli\u003eConnects to Nikon F Mount Camera Bodies\u003c\/li\u003e\n\u003cli\u003ePrecise 8.2 mm Optical Path Length\u003c\/li\u003e\n\u003cli\u003eEliminates Flexure in Heavy Imaging Trains\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 Super High Precision COPPER T-Mount for Canon EOS Full Frame\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Super High Precision COPPER T-Mount provides a rigid, M48-threaded connection for Nikon F mount cameras with a precise optical length of 8.2 mm. This solid copper adapter is engineered to eliminate flexure and maintain thermal stability, ensuring the 8.2 mm spacing is held perfectly constant even as temperatures change.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eCopper Construction: A Zero-Flexure Foundation for Your Imaging Train\u003c\/h3\u003e\n\u003cp\u003eUnlike standard aluminum T-rings that can bend or shift under the weight of a heavy camera and filter wheel, this William Optics T-mount is machined from solid copper. This material choice provides a significant increase in rigidity, preventing tilt and ensuring your camera sensor remains perfectly orthogonal to the optical axis for sharp, round stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 Threading for Full-Frame Nikon F Mount Cameras\u003c\/h3\u003e\n\u003cp\u003eThis adapter features the larger M48x0.75 thread standard on the telescope side, not the smaller M42 T-thread. This wider aperture is essential for full-frame Nikon F mount cameras, as it prevents vignetting by providing an unobstructed light cone to the large sensor. It creates a secure, wide-format connection to modern field flatteners and 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\u003eCopper vs. Aluminum T-Rings: Why 8.2mm of Stability Matters\u003c\/h3\u003e\n\u003cp\u003eWhile an aluminum T-ring is lighter, copper offers superior thermal characteristics for astrophotography. As ambient temperature drops during an imaging session, aluminum contracts more significantly, which can alter the critical 8.2 mm backfocus and cause stars to lose their sharp focus. The thermal stability of copper minimizes this contraction, keeping your focus locked and your data pristine throughout the night.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompetitor Advantage:\u003c\/strong\u003e Standard aluminum T-rings are lighter and less expensive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWilliam Optics Advantage:\u003c\/strong\u003e The copper construction provides superior thermal stability and flexure resistance, protecting image quality in demanding conditions.\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 is this William Optics T-Mount made of copper?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe copper construction provides superior thermal stability and rigidity compared to standard aluminum. This prevents focus shift from temperature changes and eliminates flexure in the imaging train, which is critical for sharp, round stars with heavy camera setups.\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 M48 thread on this T-mount for my Nikon F camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe larger M48 (2-inch) thread provides a wider, unvignetted light path to full-frame sensors. This is a significant improvement over standard M42 T-threads, which can cause dark corners in images taken with full-frame cameras like those using the Nikon F mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 8.2mm optical length of this William Optics mount work with my flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 8.2mm optical length is designed to be part of a standard 55mm backfocus calculation. Always check the requirements for your specific flattener or reducer, but this T-mount is designed to integrate cleanly into common M48-threaded imaging trains.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eThe product title says Canon EOS, but the specs say Nikon F. Which is it for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis specific model connects to a \u003cstrong\u003eNikon F camera mount\u003c\/strong\u003e. It is designed to adapt M48-threaded accessories to Nikon F-mount camera bodies. William Optics produces different models for various camera brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the copper construction of the William Optics T-Mount help on a cold night imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDuring a long imaging session of M42, temperatures can drop significantly. The copper's thermal stability means it won't contract as much as aluminum, keeping the critical 8.2mm spacing constant and your focus locked. This prevents stars from bloating or drifting out of focus over several hours.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the extra weight of the copper T-mount matter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile copper is heavier than aluminum, the small size of the T-mount means the weight difference is minimal and will not affect the balance of most telescope setups. The added rigidity and stability are a worthwhile trade-off for the slight increase in weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eM48 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eNikon F Camera Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e8.2 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\"\u003eWilliam Optics Super High Precision COPPER T-Mount\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":44967238402333,"sku":"WO-YE-TR-BR48-C","price":149.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Super-High-Precision-COPPER-T-Mount-for-Canon-EOS-Full-Frame-YE-TR-BR48-C-1__86614.1596133300.1280.1280.jpg?v=1684339355"},{"product_id":"william-optics-super-high-precision-copper-t-mount-for-nikon-full-frame","title":"William Optics Super High Precision COPPER T-Mount for Nikon Full Frame","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSolid Copper Construction for Maximum Rigidity\u003c\/li\u003e\n\u003cli\u003eM48 x 0.75 Female Thread for Wide-Field Correctors\u003c\/li\u003e\n\u003cli\u003eDesigned for Nikon Full-Frame DSLR and Mirrorless Cameras\u003c\/li\u003e\n\u003cli\u003ePrevents Vignetting on Large Sensors\u003c\/li\u003e\n\u003cli\u003ePrecision Machining for Secure, Flex-Free Connection\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 Super High Precision COPPER T-Mount for Nikon Full Frame\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Super High Precision COPPER T-Mount connects your Nikon full-frame camera to any M48 (0.75 pitch) threaded flattener or field corrector, providing the large clear aperture required to prevent vignetting. Its solid copper body offers superior rigidity compared to standard aluminum T-rings, ensuring perfect optical alignment for demanding imaging trains that utilize M48 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSolid Copper Construction: Rigidity Beyond Aluminum\u003c\/h3\u003e\n\u003cp\u003eUnlike standard T-rings made from lightweight aluminum, this William Optics T-mount is machined from a solid piece of copper. This deliberate material choice provides a significant increase in rigidity, eliminating the potential for flexure between your camera and the rest of your optical train. For imagers using heavy filter wheels or off-axis guiders, this robust connection ensures that sensor tilt is not introduced by the adapter itself.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 Clear Aperture: Eliminating Vignetting on Full-Frame Sensors\u003c\/h3\u003e\n\u003cp\u003eStandard T-rings use a smaller M42 thread, which acts as a bottleneck and darkens the corners of images captured with full-frame sensors. The William Optics T-mount utilizes the larger M48 thread format, ensuring the light cone from your flattener or reducer fully illuminates your Nikon's sensor from edge to edge. This is essential for creating flat, evenly illuminated astrophotos without the need for aggressive cropping.\u003c\/p\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 Copper M48 vs. Standard Aluminum M42 T-Rings\u003c\/h3\u003e\n\u003cp\u003eChoosing the right T-ring is a critical, often overlooked, part of the imaging train. A standard aluminum M42 T-ring is sufficient for smaller APS-C sensors, but it presents two key limitations for full-frame users that the William Optics Copper M48 T-mount solves.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Aluminum T-Ring's Limitation:\u003c\/strong\u003e Aluminum is light but can flex under the load of a heavy camera and accessories, introducing sensor tilt and elongated stars in the corners of your images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWilliam Optics Copper T-Mount's Advantage:\u003c\/strong\u003e Copper is a much stiffer material, providing a rock-solid, flex-free connection that maintains perfect optical alignment throughout an imaging session, even as temperature changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard M42 Thread's Limitation:\u003c\/strong\u003e The smaller M42 diameter physically vignettes the light cone, preventing it from covering a full-frame sensor and causing dark corners in your final images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWilliam Optics M48 Thread's Advantage:\u003c\/strong\u003e The M48 thread provides a wide, unobstructed path for light, guaranteeing full illumination for 35mm format sensors and enabling you to use the entire frame of your Nikon camera.\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 use a copper T-ring like this William Optics model instead of a standard aluminum one?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003ecopper T-ring\u003c\/strong\u003e offers significantly higher rigidity than an aluminum one. This prevents flexure in the imaging train, which can cause sensor tilt and distorted stars, especially when using heavy cameras or accessories like filter wheels. The added mass and thermal properties also contribute to a more stable connection.\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 M48 thread on this T-mount for my Nikon D850?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe full-frame sensor in your Nikon D850 requires a large, fully-illuminated image circle to avoid vignetting (darkened corners). Standard M42 T-rings are too narrow and will constrict the light path. The \u003cstrong\u003eM48 thread\u003c\/strong\u003e on this William Optics T-mount provides a wider clear aperture, ensuring the entire sensor is illuminated for clean, flat frames.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this William Optics T-mount connect directly to my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this T-mount is designed to connect your Nikon camera to a field flattener, reducer, or other corrector that has male M48 x 0.75 threads. You will thread this T-mount onto your corrector, and then the entire assembly connects to your telescope's focuser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the copper material add a lot of weight to the imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, copper is denser than aluminum, so this T-mount is heavier than a standard ring. However, this additional weight is a key part of its stability. The trade-off is a small increase in weight for a significant reduction in mechanical flexure, which is critical for high-resolution imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this T-mount help when imaging large targets like the Andromeda Galaxy (M31) with a full-frame sensor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen framing a large object like the Andromeda Galaxy (M31), you need to use your entire full-frame sensor. An M42 T-ring would cause vignetting, forcing you to crop the image and lose parts of the galaxy's faint outer arms. The \u003cstrong\u003eWilliam Optics M48 T-mount\u003c\/strong\u003e ensures the whole field is usable, allowing you to capture M31 in its entirety with even illumination.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the William Optics M48 T-mount compatible with Nikon Z-series mirrorless cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis T-mount is designed for the standard Nikon F-mount. To use it with a Nikon Z-series mirrorless camera, you will need to use the \u003cstrong\u003eNikon FTZ (F-mount to Z-mount) adapter\u003c\/strong\u003e between your camera body and this T-mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eWO-YE-TR-BR48-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eNikon F-Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Thread\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 (Female)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Compatibility\u003c\/td\u003e\n\u003ctd\u003eFull Frame \/ APS-C\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 Super High Precision COPPER T-Mount for Nikon\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":44967238435101,"sku":"WO-YE-TR-BR48-N","price":149.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Super-High-Precision-COPPER-T-Mount-for-Nikon-Full-Frame-YE-TR-BR48-N-1__02819.1596133300.1280.1280.jpg?v=1684339362"},{"product_id":"william-optics-48mm-t-mount-for-sony-e-black","title":"William Optics 48mm T-Mount for Sony E - Black","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Sony E-mount cameras to M48 accessories\u003c\/li\u003e\n\u003cli\u003eProvides a precise 36.7 mm optical length\u003c\/li\u003e\n\u003cli\u003eM48 (female) threads reduce vignetting on large sensors\u003c\/li\u003e\n\u003cli\u003eDurable, black anodized aluminum construction\u003c\/li\u003e\n\u003cli\u003eEngineered for William Optics optical systems\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 48mm T-Mount for Sony E - Black\u003c\/h2\u003e\n\u003cp\u003eSecurely connect your Sony E-mount camera to your telescope's M48 corrector or flattener with the William Optics 48mm T-Mount for Sony E. This adapter provides a precise optical length of 36.7 mm, critical for achieving a perfectly flat field with William Optics imaging systems. Its female M48 threads create a wide, unvignetted light path directly to your camera's sensor, eliminating the bottleneck caused by older M42 T-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\u003eM48 Threading: A Wider, 36.7mm Path for Full-Frame Sony Sensors\u003c\/h3\u003e\n\u003cp\u003eThis T-mount is engineered specifically for modern astrophotography setups that utilize full-frame or large APS-C sensors, common in the Sony Alpha camera line. The M48 (2-inch filter) thread provides a larger clear aperture than the standard M42 T-thread, ensuring the corrected light cone from your flattener fully illuminates the sensor without clipping the corners of the frame.\u003c\/p\u003e\n\u003cp\u003eThe fixed 36.7 mm optical length is not arbitrary; it is calculated to achieve the exact back focus required by many William Optics flatteners and reducers when paired with a Sony E-mount camera. This single-piece design removes the guesswork and potential for tilt introduced by using multiple extension tubes, resulting in sharper stars across your entire 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\u003eM48 vs. M42 T-Rings: The 6mm Difference for Full-Frame Imaging\u003c\/h3\u003e\n\u003cp\u003eFor decades, the M42 \"T-ring\" was the standard for connecting cameras to telescopes. However, its 42mm clear aperture acts as a choke point for the light path, causing significant vignetting (darkened corners) on sensors larger than the APS-C format. A full-frame sensor simply cannot be fully illuminated through such a narrow opening.\u003c\/p\u003e\n\u003cp\u003eThe William Optics 48mm T-Mount solves this problem. By expanding the connection thread to M48, it creates a wider gateway for light, preserving the field illumination your telescope's corrector was designed to deliver. If you are imaging with a full-frame Sony camera, an M48 T-mount is essential for maximizing the usable area of your sensor and capturing clean, evenly illuminated frames.\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 William Optics 48mm T-Mount for Sony E?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis T-mount serves one primary function: to connect a \u003cstrong\u003eSony E-mount camera\u003c\/strong\u003e (such as those in the Alpha series) to a telescope flattener, reducer, or other accessory that uses a male \u003cstrong\u003eM48x0.75 thread\u003c\/strong\u003e. It also sets the camera sensor at a precise \u003cstrong\u003e36.7 mm\u003c\/strong\u003e distance from the accessory's threads, which is critical for achieving correct back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy should I choose this M48 T-Mount over a standard M42 T-ring for my Sony A7?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard M42 T-ring has a smaller opening that will cause significant vignetting (darkened corners) on the full-frame sensor of a Sony A7 series camera. The larger \u003cstrong\u003eM48 thread\u003c\/strong\u003e on this William Optics mount provides a wider light path, ensuring the entire sensor is evenly illuminated, which is crucial for high-quality, wide-field astrophotography.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 36.7 mm optical length of this T-Mount important?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is extremely important. Most field flatteners and reducers require a specific back focus distance (typically 55mm) to produce sharp stars across the entire field. Sony E-mount cameras have a flange distance of 18mm. This adapter's \u003cstrong\u003e36.7 mm length\u003c\/strong\u003e, when added to the camera's 18mm, totals 54.7mm—very close to the 55mm standard. It is specifically designed to achieve perfect spacing with many William Optics correctors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich William Optics telescopes is this 48mm T-Mount designed for?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis T-mount is compatible with any William Optics telescope that uses a field flattener or reducer terminating in a male M48 thread. This includes popular models such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRedCat, WhiteCat, and SpaceCat series refractors\u003c\/li\u003e\n\u003cli\u003eFluorostar (FLT) series with their corresponding flatteners\u003c\/li\u003e\n\u003cli\u003eGran Turismo (GT) series with their corresponding flatteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways check your specific flattener's documentation to confirm it requires an M48 connection and is compatible with the resulting back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this T-mount work for imaging the Andromeda Galaxy (M31) with my full-frame Sony camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this is an ideal accessory for that exact scenario. The Andromeda Galaxy is a very large target, and a full-frame sensor is needed to capture it fully with many refractors. Using this \u003cstrong\u003e48mm T-Mount\u003c\/strong\u003e ensures that the faint outer spiral arms of M31 are not dimmed or cut off by vignetting, which would almost certainly happen with a smaller M42 T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I attach the WO 48mm T-Mount to my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFirst, remove the lens from your Sony E-mount camera. Align the indicator dot on the T-mount with the dot on your camera's bayonet mount and twist to lock it in place, just like a standard lens. Then, you can thread the entire camera and T-mount assembly directly onto the male M48 threads of your telescope's field flattener or reducer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Telescope\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Camera\u003c\/td\u003e\n\u003ctd\u003eSony E-Mount (NEX\/Alpha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length \/ Back Focus Contribution\u003c\/td\u003e\n\u003ctd\u003e36.7 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\"\u003eWilliam Optics 48mm T-Mount for Sony E\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":44967238467869,"sku":"WO-TM-SN-E-M48","price":76.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-48mm-T-Mount-for-Sony-E-Space-Gray-YE-TR-M48ET-TG-1__11108.1596133301.1280.1280.jpg?v=1684339370"},{"product_id":"william-optics-micro-4-3-48mm-t-mount-for-olympus-space-gray","title":"William Optics Micro 4\/3 48mm T-Mount for Olympus - Black","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 Correctors to Olympus Micro 4\/3 Cameras\u003c\/li\u003e\n\u003cli\u003eFixed 35.6 mm Optical Length for Precise Back Focus\u003c\/li\u003e\n\u003cli\u003eLight-In Connection: M48 (Female) Thread\u003c\/li\u003e\n\u003cli\u003eLight-Out Connection: Olympus Micro 4\/3 Bayonet Mount\u003c\/li\u003e\n\u003cli\u003eDurable Single-Piece Aluminum Construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\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 Micro 4\/3 48mm T-Mount for Olympus - Black\u003c\/h2\u003e\n      \u003cp\u003eThe William Optics Micro 4\/3 48mm T-Mount provides a direct, secure connection from any M48 female thread to your Olympus or Panasonic Micro 4\/3 camera body. Its single-piece design is machined to a precise optical length of 35.6 mm, achieving the ideal standard 55 mm total back focus requirement when paired with a Micro 4\/3 camera body.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003ePrecision Spacing: Achieving 55mm Total Back Focus\u003c\/h3\u003e\n      \u003cp\u003eA field flattener or reducer-flattener only delivers sharp, point-like stars across the entire frame when the camera sensor is placed at a specific distance from its rear lens element. This William Optics T-Mount provides the exact 35.6 mm optical path length that, when combined with the internal flange focal distance of a Micro 4\/3 camera, yields the total 55 mm back focus needed for William Optics refractors.\u003c\/p\u003e\n      \u003cp\u003eUsing this single, rigid adapter removes the guesswork and potential for tilt. The result is a mechanically solid imaging train and a flat, fully corrected field of view, letting you get the most out of your William Optics telescope.\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 primary purpose of the William Optics M48 T-Mount for Micro 4\/3?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter connects a field flattener or other corrector with a standard \u003cstrong\u003eM48 (2-inch filter) thread\u003c\/strong\u003e to any camera body that uses the \u003cstrong\u003eOlympus\/Panasonic Micro 4\/3 mount\u003c\/strong\u003e. Its main function is to provide an optical length of \u003cstrong\u003e35.6 mm\u003c\/strong\u003e, reaching a total system back focus of 55 mm once attached to your Micro 4\/3 camera.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the 35.6 mm optical length of this William Optics T-Mount critical for imaging?\u003c\/h3\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eField flatteners are designed to work at a specific distance from the camera sensor (typically 55 mm total). If the spacing is incorrect, you will see elongated or out-of-focus stars in the corners of your images. Combined with a Micro 4\/3 camera sensor distance, this adapter delivers the exact \u003cstrong\u003e55 mm total back focus\u003c\/strong\u003e needed to produce sharp stars from edge to edge.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI have a William Optics RedCat 51. Is this the right T-Mount for my Olympus OM-D E-M1 camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, this is the correct adapter. The RedCat 51 has an integrated flattener that terminates in an M48 thread. The William Optics M48 T-Mount for Micro 4\/3 will connect directly to the telescope and your Olympus camera, establishing the full 55 mm back focus for a fully corrected image.\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 M48 T-Mount with a non-William Optics telescope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, provided your telescope's flattener has an M48 output thread and requires a standard \u003cstrong\u003e55 mm back focus\u003c\/strong\u003e when paired with a Micro 4\/3 camera body. Always verify the back focus requirement of your specific flattener before imaging.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the William Optics M48 T-Mount cause vignetting with my Micro 4\/3 camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. The M48 thread provides a wide, fully illuminated light cone that is significantly larger than the sensor used in Micro 4\/3 cameras. This ensures there is no vignetting or light fall-off at the edges of the frame caused by the adapter itself.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the William Optics M48 T-Mount work with my ZWO cooled astronomy camera?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. This adapter features a bayonet mount for DSLR and mirrorless cameras like those from Olympus and Panasonic. It will not attach to a cooled astronomy camera, which typically uses direct threaded connections (like M42 or M48).\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\u003eLight-In Side\u003c\/td\u003e\n\u003ctd\u003eM48 (female)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLight-Out Side\u003c\/td\u003e\n\u003ctd\u003eOlympus Micro 4\/3 Camera Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e35.6 mm (55 mm total back focus with Micro 4\/3 camera)\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\"\u003eWilliam Optics Micro 4\/3 48mm T-Mount\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":44967238533405,"sku":"WO-TM-MFT-M48","price":65.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/TM-MFT-M48-1.jpg?v=1714747777"},{"product_id":"william-optics-camera-angle-rotator-for-2-5-m63-focuser","title":"William Optics Camera Angle Rotator for 2.5\" M63 Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdds 360° of smooth camera rotation\u003c\/li\u003e\n\u003cli\u003eDesigned for William Optics 2.5\" focusers\u003c\/li\u003e\n\u003cli\u003eSecure M63 male and female threads\u003c\/li\u003e\n\u003cli\u003eMaintains optical alignment during adjustment\u003c\/li\u003e\n\u003cli\u003eLow-profile design minimizes back focus usage\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 Camera Angle Rotator for 2.5\" M63 Focuser\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Camera Angle Rotator provides 360° of precise framing adjustment for imagers using the William Optics 2.5\" focuser with an M63 thread connection. This essential accessory allows you to perfectly compose your astrophotography targets without ever needing to unthread your camera or disrupt your optical train's 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\u003e360° Framing Rotation for 2.5\" M63 Focusers\u003c\/h3\u003e\n\u003cp\u003eThis rotator threads directly onto the M63 drawtube of your William Optics 2.5\" focuser, providing a secure, non-flexing connection for your camera and accessories. A simple twist of the rotator housing allows for smooth, continuous rotation, letting you dial in the perfect orientation for targets like the Andromeda Galaxy (M31) or capture the full extent of the Veil Nebula complex. Once framed, the rotator locks firmly in place, preserving the rigid connection required for sharp, long-exposure images.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main purpose of the William Optics M63 Camera Angle Rotator?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts primary purpose is to allow you to rotate your imaging camera to achieve the best possible composition for an astronomical target. The \u003cstrong\u003eWilliam Optics M63 Camera Angle Rotator\u003c\/strong\u003e lets you do this without loosening the camera from the focuser, which prevents potential sensor tilt and maintains a solid imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the WO-M-CAA63 help when imaging large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor large, elongated targets like the Andromeda Galaxy (M31) or the Pleiades (M45), fitting the object into your camera's field of view is critical. This rotator lets you orient your rectangular sensor to match the target's longest axis, ensuring you capture the entire object and its faint outer extensions in a single, well-composed frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this M63 rotator to frame intricate targets like the Horsehead Nebula (B33)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. For targets with specific aesthetic orientations, like positioning the Horsehead Nebula (B33) relative to the Flame Nebula (NGC 2024), precise framing is key. The \u003cstrong\u003eWO-M-CAA63 rotator\u003c\/strong\u003e gives you fine control to compose the shot exactly as you envision it, turning a simple snapshot into a carefully crafted astrophoto.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this rotator work with focusers other than a William Optics 2.5\" M63 model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this rotator is specifically designed with \u003cstrong\u003eM63 threads\u003c\/strong\u003e to match the drawtube of William Optics 2.5\" focusers. It is not compatible with focusers that use different thread sizes or connection types.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I lock the William Optics rotator in place once I have my desired angle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMost camera angle rotators, including this William Optics model, feature a thumbscrew or a locking collar. Once you have rotated the camera to the desired position, you simply tighten the lock to prevent any further movement during your imaging session, ensuring stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the WO-M-CAA63 introduce flexure into my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics rotator is engineered to provide a rigid connection. When properly tightened and used within the focuser's load capacity, it should not introduce any noticeable flexure. It is designed to maintain the mechanical integrity of your optical path from the focuser to the camera sensor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics Camera Angle Rotator for 2.5\" M63 Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eM63\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Focuser\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics 2.5\" Focuser\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\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":44967238566173,"sku":"WO-M-CAA63","price":178.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Camera-Angle-Rotator-for-2-5-inch-M63-Focuser-M-CAA63-1__74749.1596133305.1280.1280.jpg?v=1684339605"},{"product_id":"william-optics-slide-base-50mm-guiding-rings-no-adjustments-screws","title":"William Optics Slide-Base 50mm Guiding Rings - No Adjustments Screws","description":"\u003cul\u003e\n\t\u003cli\u003eSeamlessly integrate with your existing astrophotography gear.\u003c\/li\u003e\n\t\u003cli\u003eEnsures stable attachment of your telescope to your mount.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\t\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\t\u003cli\u003eIn the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\t\u003cli class=\"active\"\u003e\n\t\t\u003cp\u003eEnhance your astrophotography setup with the William Optics Slide-Base 50mm Guiding Rings, designed for precise guiding without the need for adjustment screws.\u003c\/p\u003e\n\n\t\t\u003cdiv\u003e\n\t\t\t\u003ch3\u003eKey Features\u003c\/h3\u003e\n\t\t\t\u003chr\u003e\n\t\t\t\u003cdiv class=\"two-columns-section\"\u003e\n\t\t\t\t\u003cdiv class=\"text-side-2\"\u003e\n\t\t\t\t\t\u003cp\u003e\n\t\t\t\t\t\tHere are some key benefits and features:\n\t\t\t\t\t\u003c\/p\u003e\n\t\t\t\t\t\u003cul\u003e\n\t\t\t            \u003cli\u003e\n\u003cb\u003eSlide-Base Design:\u003c\/b\u003e Allows for effortless adjustment and fine-tuning of guiding scopes.\u003c\/li\u003e\n\t\t\t            \u003cli\u003e\n\u003cb\u003eNo Adjustment Screws:\u003c\/b\u003e Simplifies setup and reduces maintenance.\u003c\/li\u003e\n\t\t\t            \u003cli\u003e\n\u003cb\u003eSecure Mounting:\u003c\/b\u003e Ensures stability during long exposure photography sessions.\u003c\/li\u003e\n\t\t\t            \u003cli\u003e\n\u003cb\u003eDurable Construction:\u003c\/b\u003e Crafted from high-quality materials for reliability and longevity.\u003c\/li\u003e\n\t\t\t            \u003cli\u003e\n\u003cb\u003eCompatibility:\u003c\/b\u003e Compatible with most telescopes and mounting systems.\u003c\/li\u003e\n\t\t\t        \u003c\/ul\u003e\n\t\t\t\t\u003c\/div\u003e\n\t\t\t\t\u003cdiv class=\"image-side-2\" data-mce-style=\"text-align: start;\" style=\"text-align: start;\"\u003e\n\t\t\t\t\t\u003cimg src=\"https:\/\/davidastro.com\/cdn\/shop\/products\/William-Optics-Slide-Base-50mm-Guiding-Rings-M-GR50IISL-1__46491.1596133322.1280.1280_832x832.jpg?v=1684339652\" style=\"margin-bottom: 16px; float: none;\" alt=\"William Optics Slide-Base 50mm Guiding Rings - No Adjustments Screws\"\u003e\n\t\t\t\t\u003c\/div\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\u003c\/div\u003e\n\t\t\u003cdiv\u003e\n\t\t\t\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\t\t\t\u003chr\u003e\n\t\t\t\u003cp\u003eAstrophotographers seeking precise guiding solutions for improved tracking.\u003cbr\u003eEnthusiasts looking to enhance their telescope setup with reliable accessories.\u003c\/p\u003e\n\t\t\u003c\/div\u003e\n\t\u003c\/li\u003e\n\t\u003cli\u003e\n\t\t\u003cul\u003e\n\t\t\t\u003cli\u003eSlide-Base 50mm Guiding Rings\u003c\/li\u003e\n\t\t\u003c\/ul\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967240728861,"sku":"WO-M-GR50IISL","price":92.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Slide-Base-50mm-Guiding-Rings-M-GR50IISL-1__46491.1596133322.1280.1280.jpg?v=1684339652"},{"product_id":"william-optics-slide-base-50mm-guiding-rings","title":"William Optics Slide-Base 50mm Guiding Rings","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSecurely holds guidescopes and finders with a 50mm tube diameter\u003c\/li\u003e\n\u003cli\u003eSlide-base design allows for fore-and-aft adjustment for precise balancing\u003c\/li\u003e\n\u003cli\u003eEssential for eliminating tracking errors caused by an imbalanced imaging rig\u003c\/li\u003e\n\u003cli\u003eFeatures thumbscrews for fine-pointing adjustments to center a guide star\u003c\/li\u003e\n\u003cli\u003eSignature William Optics fit and finish for durability and ease of use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\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 Slide-Base 50mm Guiding Rings\u003c\/h2\u003e\n      \u003cp\u003eThe William Optics Slide-Base 50mm Guiding Rings are a fundamental component for serious astrophotographers, offering a secure, adjustable mounting solution for any guidescope with a 50mm tube diameter. This ring set's primary function is to enable perfect balance of your entire imaging payload, a critical step for achieving the sharpest possible long-exposure images with your 50mm guide scope.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA Secure Mount for 50mm Class Guidescopes\u003c\/h3\u003e\n      \u003cp\u003eThese rings are engineered to firmly hold your 50mm guidescope, preventing any flexure or slippage that could ruin a sub-exposure. Equipped with adjustment thumbscrews, you can easily aim your guidescope independently of your main telescope, making the process of finding and centering a suitable guide star quick and simple. This ensures your autoguider has a solid lock, night after night.\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 Slide-Base Advantage: Balancing Your 50mm Guide System\u003c\/h3\u003e\n      \u003cp\u003eThe key feature of this design is the slide-base, which allows you to move your 50mm guidescope forward or backward along the telescope's optical axis. This capability is crucial for achieving perfect balance in both right ascension and declination. An imbalanced rig forces your mount's motors to work harder, introducing tracking errors that result in elongated stars; these rings directly solve that problem by giving you fine control over your setup's center of gravity.\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 advantage of the William Optics Slide-Base 50mm Guiding Rings over fixed rings?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe primary advantage is \u003cstrong\u003ebalance\u003c\/strong\u003e. Fixed rings lock your guidescope in one position, but the \u003cstrong\u003eWilliam Optics Slide-Base 50mm Guiding Rings\u003c\/strong\u003e allow you to slide the guidescope fore and aft. This adjustment is critical for precisely balancing your entire telescope and camera payload, which reduces strain on your mount and improves autoguiding accuracy.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the William Optics 50mm Guiding Rings fit a guidescope from another brand?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. The William Optics 50mm Guiding Rings are designed to work with any guidescope or finderscope that has an outer tube diameter of \u003cstrong\u003e50mm\u003c\/strong\u003e, regardless of the manufacturer.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow do these WO Slide-Base 50mm Rings help balance a heavy setup like an 8\" SCT?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFor a telescope like an 8\" SCT with a camera and other accessories, achieving perfect balance is difficult. The \u003cstrong\u003eWilliam Optics Slide-Base 50mm Guiding Rings\u003c\/strong\u003e provide a second axis of adjustment. After balancing the main scope, you can slide the guidescope within the rings to fine-tune the balance point without having to move the entire telescope in its saddle, leading to much better tracking.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mounting plate do I need for the William Optics Slide-Base 50mm Guiding Rings?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThese rings are designed to be mounted onto a compatible base, such as the saddle handle found on many William Optics telescopes or a universal dovetail bar that accepts this type of sliding base. This allows the rings to move freely for balancing.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eMy William Optics RedCat 51 is hard to balance. Will these 50mm rings help?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. Compact, wide-field refractors like the RedCat 51 can become unbalanced quickly when a guidescope and camera are added. The \u003cstrong\u003eWilliam Optics Slide-Base 50mm Guiding Rings\u003c\/strong\u003e are an ideal solution, as they allow you to precisely counteract the weight of your accessories and achieve the perfect balance necessary for sharp, round stars.\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 Slide-Base 50mm Rings for a finderscope?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes. If your finderscope has a \u003cstrong\u003e50mm\u003c\/strong\u003e tube diameter, these rings will hold it securely. The slide-base functionality also allows you to position the finder eyepiece at a more comfortable viewing angle.\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\u003eCompatible Guidescope Diameter\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMounting Style\u003c\/td\u003e\n\u003ctd\u003eSlide-Base\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\"\u003eSlide-Base 50mm Guiding Rings\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":44967240794397,"sku":"WO-M-GR50SL","price":105.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-Slide-Base-50mm-Guiding-Rings-M-GR50SL-1__06866.1596133323.1280.1280.jpg?v=1684339658"},{"product_id":"william-optics-120mm-saddle-handle-bar-with-50mm-guiding-rings-no-adjustments-screws","title":"William Optics 120mm Saddle Handle Bar with 50mm Guiding Rings - No Adjustments Screws","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e120 mm Length\u003c\/li\u003e\n\u003cli\u003eIntegrated 50mm Guide Rings\u003c\/li\u003e\n\u003cli\u003eMini-Vixen Style Top Saddle\u003c\/li\u003e\n\u003cli\u003e44 mm Width\u003c\/li\u003e\n\u003cli\u003eDesigned for Maximum Rigidity\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 120mm Saddle Handle Bar with 50mm Guiding Rings\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 120mm Saddle Handle Bar combines a secure carrying handle with an integrated 44mm wide Mini-Vixen style saddle for mounting accessories. Designed for absolute rigidity, this 120mm long handle features a pair of fixed 50mm guide rings, creating a streamlined and flexure-free platform for a compact autoguiding system.\u003c\/p\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-Function Design: A 120mm Handle and Mini-Vixen Saddle\u003c\/h3\u003e\n\u003cp\u003eThis handle simplifies both the transport and the outfitting of your telescope. The 120mm length provides a sturdy, comfortable grip for carrying your optical tube, reducing the risk of drops during setup and teardown. Once mounted, the top surface acts as a Mini-Vixen saddle, allowing you to securely attach guide scopes, finderscopes, or other accessories with a standard V-style dovetail.\u003c\/p\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 50mm Guide Rings for a Rigid, Non-Adjustable Setup\u003c\/h3\u003e\n\u003cp\u003eBy eliminating adjustment screws, William Optics has engineered these 50mm guide rings for maximum stability. This design choice removes a common source of differential flexure, ensuring your guide scope and main imaging telescope remain perfectly parallel throughout an imaging session. This results in tighter stars and removes a frustrating variable from your guiding workflow.\u003c\/p\u003e\n\u003cp\u003eThe trade-off for this rigidity is a lack of independent aiming for the guide scope. You will rely on the wide field of view of your 50mm guide scope and modern guiding software like PHD2 to automatically locate a suitable guide star within the frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChoosing Your Guiding Philosophy: Non-Adjustable vs. Adjustable Rings\u003c\/h3\u003e\n\u003cp\u003eThe choice between this handle and one with adjustable rings comes down to your priorities. An adjustable system offers the flexibility to manually point your guide scope toward a brighter guide star, which can be useful in star-poor regions of the sky. This non-adjustable version prioritizes mechanical simplicity and absolute rigidity. With no screws to work loose or shift, it provides a solid, set-and-forget mounting solution that virtually eliminates guiding errors caused by hardware flex.\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 benefit of the William Optics 120mm handle bar having non-adjustable 50mm rings?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit is \u003cstrong\u003erigidity\u003c\/strong\u003e. By removing adjustment screws, William Optics eliminates a potential source of differential flexure. This ensures your guide scope and imaging scope remain perfectly aligned, leading to better guiding accuracy and sharper stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I mount on the Mini-Vixen saddle of this WO handle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Mini-Vixen saddle is compatible with any accessory that uses a standard Vixen (V-style) dovetail bar. This includes most finderscopes, guide scopes (like the William Optics UniGuide series), and other small astronomical accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 120mm length of this handle suitable for a portable setup with a William Optics RedCat or ZenithStar telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, its compact 120mm length is an excellent match for smaller William Optics refractors like the RedCat, ZenithStar, and Gran Turismo series. It provides essential handle and guiding functionality without adding unnecessary weight or bulk to a portable imaging rig.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I center a guide star using the WO 120mm handle if the 50mm rings don't have adjustment screws?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou rely on the wide field of view of your guide scope and your guiding software. A typical 50mm guide scope provides a large enough patch of sky that software like \u003cstrong\u003ePHD2 Guiding\u003c\/strong\u003e can almost always find a suitable guide star automatically without any need for manual aiming.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this handle bar fit non-William Optics telescopes?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt may, but compatibility depends on the mounting hole spacing on the top of your telescope's tube rings. This handle is designed specifically for the hole patterns found on William Optics telescopes, so you should measure your scope's ring spacing before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Mini-Vixen saddle on the WO 120mm handle compatible with standard Losmandy-style dovetail plates?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The saddle is designed for the narrower Vixen-style (V-style) dovetail profile. It is not wide enough to accept a larger Losmandy-style (D-style) plate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e44 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Saddle Dovetail Type\u003c\/td\u003e\n\u003ctd\u003eMini-Vixen (V-Style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Ring Inner Diameter\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Ring Adjustment\u003c\/td\u003e\n\u003ctd\u003eNone (Fixed)\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\"\u003e120mm Saddle Handle Bar with 50mm Guiding Rings\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":44967241679133,"sku":"WO-M-HC120BL-GR50IISL","price":140.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-120mm-Saddle-Handle-Bar-with-50mm-Guiding-Rings-M-HC120BL-GR50IISL-1__92525.1596133327.1280.1280.jpg?v=1684339685"},{"product_id":"william-optics-120mm-saddle-handle-bar-with-50mm-guiding-rings","title":"William Optics 120mm Saddle Handle Bar with 50mm Guiding Rings","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e120 mm Total Length\u003c\/li\u003e\n\u003cli\u003ePatented Handle and Saddle Design\u003c\/li\u003e\n\u003cli\u003eMini-Vixen Dovetail Saddle\u003c\/li\u003e\n\u003cli\u003eIncludes 50mm Guide Rings\u003c\/li\u003e\n\u003cli\u003e44 mm Width\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 120mm Saddle Handle Bar with 50mm Guiding Rings\u003c\/h2\u003e\n\u003cp\u003eThe patented William Optics 120mm Saddle Handle Bar is a dual-purpose accessory, combining a secure carry handle and a Mini-Vixen dovetail saddle into a single 120 mm component. This kit arrives with a matched set of 50mm guiding rings, creating a complete mounting solution for your guide scope and an essential upgrade for both portability and autoguiding.\u003c\/p\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 Patented 120mm Carry Handle and Mini-Vixen Saddle\u003c\/h3\u003e\n\u003cp\u003eThis patented design solves two common problems with a single accessory. It functions as a rigid, comfortable handle for safely transporting your optical tube, while the integrated 44 mm wide top surface is a Mini-Vixen style dovetail saddle for mounting guide scopes, finders, or other accessories.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Purpose Engineering:\u003c\/strong\u003e Combines a secure carry handle and a versatile accessory saddle into one CNC-machined unit, increasing rigidity and reducing weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMini-Vixen Compatibility:\u003c\/strong\u003e The 120 mm long saddle accepts any accessory equipped with a standard Vixen-style dovetail bar, secured by two robust locking screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe and Easy Transport:\u003c\/strong\u003e Offers a confident grip for moving your fully-loaded telescope to and from your observing site, minimizing the risk of accidental drops.\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\u003eIncluded 50mm Rings for Autoguiding Setups\u003c\/h3\u003e\n\u003cp\u003eThis kit is purpose-built for imagers, arriving with a matched pair of 50mm guiding rings. These rings mount directly to the handle bar, creating a stable platform for popular 50mm guide scopes. This integrated approach ensures solid alignment and rigidity, eliminating a common source of flexure in autoguiding systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Guiding Package:\u003c\/strong\u003e Includes two 50mm rings with non-marring nylon-tipped thumbscrews, ready for your guide scope right out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlex-Free Connection:\u003c\/strong\u003e Attaching the guide scope directly to the main OTA's handle bar creates a more rigid system than mounting it on a separate dovetail, reducing differential flexure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight and Strong:\u003c\/strong\u003e The entire assembly adds minimal weight to your imaging train while significantly improving its structural integrity and ease 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\"\u003eWill the William Optics 120mm Saddle Handle Bar fit my RedCat 51 telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this handle bar is designed as a standard accessory for many William Optics telescopes, including the \u003cstrong\u003eRedCat series\u003c\/strong\u003e. It provides both a carrying handle and a solid mounting point for the included 50mm guide rings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a 60mm guide scope with the included rings on the William Optics Handle Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, the rings included in this specific package are designed for a \u003cstrong\u003e50mm diameter guide scope\u003c\/strong\u003e. For larger guide scopes, you would need to purchase separate, larger rings and mount them to the handle's Mini-Vixen saddle if they are attached to a Vixen bar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat type of dovetail does the saddle on the William Optics 120mm Handle Bar accept?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe top saddle features a \u003cstrong\u003eMini-Vixen style clamp\u003c\/strong\u003e. It is designed to accept accessories that have a standard Vixen-style dovetail bar, such as guide scopes, finderscopes, or other small accessories.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the length of the William Optics Saddle Handle Bar?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe handle bar has a total length of \u003cstrong\u003e120 mm\u003c\/strong\u003e. Its compact size ensures a rigid connection and makes it an ideal fit for small to medium-sized refractors without adding unnecessary bulk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need to buy separate rings for my 50mm guide scope with this William Optics handle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this is a complete kit. The William Optics 120mm Saddle Handle Bar comes bundled with a pair of \u003cstrong\u003e50mm guiding rings\u003c\/strong\u003e, so you have everything you need to mount a compatible guide scope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this William Optics handle bar improve my imaging setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt improves your setup in two key ways. First, it provides a \u003cstrong\u003esecure handle for transport\u003c\/strong\u003e, reducing the risk of damaging your OTA. Second, it creates a \u003cstrong\u003erigid, integrated platform\u003c\/strong\u003e for your 50mm guide scope, which can reduce differential flexure and lead to tighter, rounder stars in your long-exposure images.\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\u003eLength\u003c\/td\u003e\n\u003ctd\u003e120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e44 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDovetail Saddle Type\u003c\/td\u003e\n\u003ctd\u003eMini-Vixen\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\"\u003e120mm Saddle Handle Bar\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\"\u003e50mm Guiding Rings\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\u003cp\u003eNo downloads are available for this product.\u003c\/p\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":44967241744669,"sku":"WO-M-HC120BL-GR50SL","price":163.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-120mm-Saddle-Handle-Bar-with-50mm-Guiding-Rings-M-HC120BL-GR50SL-1__08953.1596133328.1280.1280.jpg?v=1684339490"},{"product_id":"william-optics-243mm-saddle-handle-bar-with-all-50mm-guiding-rings","title":"William Optics 243mm Saddle Handle Bar with 50mm Guiding Rings","description":"\u003cul\u003e\n\t\u003cli\u003eCompatible with William Optics' slide-base guide rings\u003c\/li\u003e\n\t\u003cli\u003eCan be used to make William Optics telescopes portable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\t\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\t\u003cli class=\"active\"\u003e\n\t\t\u003cp\u003e\n\t\t\tThe William Optics 243mm Saddle Handle Bar with 50mm guiding rings is a sturdy and versatile accessory designed for telescope systems. It provides a secure and comfortable grip for carrying and handling the telescope, while also offering a mounting point for guiding rings and other accessories. The handle bar is precision-made from high-quality materials, ensuring a durable and reliable performance. Its compatibility with William Optics' slide-base guide rings and UniGuide 50mm Slide-Base Guide Scope makes it an ideal addition to any telescope setup.\n\t\t\u003c\/p\u003e\n\t\t\u003cdiv class=\"warning\"\u003e\n\t\t\t\u003cimg alt=\"Disclaimer\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/warning-logo.svg?v=1714663206\" width=\"25px\"\u003e\n\t\t\t\u003cp\u003e\n\t\t\t\t\u003cb\u003eCompatible with William Optics' slide-base guide rings\u003c\/b\u003e\n\t\t\t\u003c\/p\u003e\n\t\t\u003c\/div\u003e\n\n\t\t\u003cdiv\u003e\n\t\t\t\u003ch3\u003eBenefits and Features\u003c\/h3\u003e\n\t\t\t\u003chr\u003e\n\t\t\t\u003cdiv class=\"two-columns-section\"\u003e\n\t\t\t\t\u003cdiv class=\"text-side-2\"\u003e\n\t\t\t\t\t\u003cp\u003e\n\t\t\t\t\t\tHere are some key benefits and features:\n\t\t\t\t\t\u003c\/p\u003e\n\t\t\t\t\t\u003cul\u003e\n\t\t\t\t\t\t\u003cli\u003eWeight: 405 grams\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eWidth: 44 mm\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eCan be used with the William Optics UniGuide 50mm Slide-Base Guide Scope\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eIncludes two screws for installation\u003c\/li\u003e\n\t\t\t\t\t\t\u003cli\u003eCan be used to make William Optics telescopes portable\u003c\/li\u003e\n\t\t\t\t\t\u003c\/ul\u003e\n\t\t\t\t\u003c\/div\u003e\n\t\t\t\t\u003cdiv class=\"image-side-2\" data-mce-style=\"text-align: start;\" style=\"text-align: start;\"\u003e\n\t\t\t\t\t\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-243mm-Saddle-Handle-Bar-with-All-50mm-Guiding-Rings-M-HC243BL-GR50IISL-1__29391.1596133330.1280.1280.jpg?v=1684339698\" style=\"margin-bottom: 16px; float: none;\"\u003e\n\t\t\t\t\u003c\/div\u003e\n\t\t\t\u003c\/div\u003e\n\t\t\u003c\/div\u003e\n\t\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":44967243415837,"sku":"WO-M-HC243BL-GR50IISL","price":203.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-243mm-Saddle-Handle-Bar-with-All-50mm-Guiding-Rings-M-HC243BL-GR50IISL-1__29391.1596133330.1280.1280.jpg?v=1684339698"},{"product_id":"william-optics-48mm-t-mount-for-canon","title":"William Optics 48mm T-Mount for Canon","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects M48 (2-inch) Threaded Correctors to Canon EOS Cameras\u003c\/li\u003e\n\u003cli\u003eWide M48 Aperture Eliminates Vignetting on Full-Frame Sensors\u003c\/li\u003e\n\u003cli\u003eAdds a Precise 10.6 mm of Optical Length to the Imaging Train\u003c\/li\u003e\n\u003cli\u003eMachined from Black Anodized Aluminum\u003c\/li\u003e\n\u003cli\u003eFemale M48x0.75 Threading\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 48mm T-Mount for Canon\u003c\/h2\u003e\n\u003cp\u003eThe William Optics 48mm T-Mount for Canon is the professional-grade solution for connecting your Canon EOS camera to a modern 2-inch imaging train, featuring a wide M48 female thread to prevent vignetting on full-frame sensors. It adds a precise 10.6 mm to the optical path, a critical constant for calculating the exact spacing required by field flatteners and reducers to achieve sharp stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eM48 Threads \u0026amp; 10.6mm Spacing: The Solution for Full-Frame Canon Imaging\u003c\/h3\u003e\n\u003cp\u003eThis adapter solves the most common bottleneck in DSLR astrophotography: the restrictive M42 \"T-thread.\" By using the larger M48 x 0.75 female thread, this T-mount provides a wider, un-obstructed light path from your flattener or reducer to your camera's sensor. This is essential for owners of full-frame Canon cameras, as it eliminates the vignetting (darkened corners) that M42 adapters often create.\u003c\/p\u003e\n\u003cp\u003eThe fixed optical length of 10.6 mm is designed for precision. When paired with a Canon EOS camera body, which has a native flange focal distance of 44mm, this adapter brings your total back focus to 54.6mm. This is within a millimeter of the 55mm standard required by most field correctors, allowing you to achieve a flat field with minimal or no additional spacers.\u003c\/p\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 M48 vs. Standard M42 T-Ring: A Wider Path to the Sensor\u003c\/h3\u003e\n\u003cp\u003eWhile standard M42 T-rings are common, they were designed for older film formats and can act as a choke point for the light cone in a modern imaging setup. The William Optics M48 T-Mount is purpose-built to overcome this limitation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard M42 T-Ring:\u003c\/strong\u003e The smaller 42mm thread diameter often vignettes the corners of full-frame and even some large APS-C sensors, forcing you to crop your final images or spend time correcting gradients in post-processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWilliam Optics M48 T-Mount:\u003c\/strong\u003e The larger 48mm thread diameter provides a clear aperture that fully illuminates sensors up to 44mm diagonally. This ensures your expensive full-frame sensor receives all the light your telescope collects, resulting in brighter, evenly illuminated frames from edge to edge.\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 William Optics M48 T-Mount over a standard M42 T-ring for my Canon EOS camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is the larger \u003cstrong\u003eM48 thread diameter\u003c\/strong\u003e, which prevents vignetting (darkening of the corners) on full-frame and large APS-C camera sensors. A standard M42 T-ring can physically block some of the light cone, while the M48 mount ensures the entire sensor is evenly illuminated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this M48 T-Mount work with my William Optics refractor and flattener?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, this T-mount is specifically designed to integrate with William Optics flatteners and other correctors that output an M48 male thread and require approximately 55mm of back focus. The \u003cstrong\u003e10.6 mm optical length\u003c\/strong\u003e of this adapter is a key part of that calculation when used with a Canon EOS camera body.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I calculate back focus using the 10.6 mm optical length of this William Optics T-mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou add the adapter's optical length to your camera's flange distance. For a Canon EOS camera, the flange distance is 44mm. So, the total distance from the T-mount's M48 thread to your sensor will be \u003cstrong\u003e44mm + 10.6mm = 54.6mm\u003c\/strong\u003e. You can then use thin M48 spacers to reach the exact back focus required by your specific flattener or reducer, which is typically 55mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter compatible with both full-frame and APS-C Canon EOS cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is compatible with any camera that uses the \u003cstrong\u003eCanon EOS mount\u003c\/strong\u003e. While it provides the most significant benefit for full-frame cameras by preventing vignetting, it works perfectly with APS-C models as well, providing a secure, wide-aperture connection to your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use 2-inch filters with the William Optics M48 T-Mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis adapter itself does not have threads for a filter. Filters should be placed earlier in the imaging train, typically by threading them into a dedicated filter drawer, a filter wheel, or directly onto the nosepiece of the flattener\/reducer before you attach this T-mount.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter let me attach my Canon EOS camera to a Schmidt-Cassegrain telescope for imaging the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, provided your Schmidt-Cassegrain (SCT) is equipped with a focal reducer or flattener that terminates in male \u003cstrong\u003eM48 threads\u003c\/strong\u003e. You would thread this T-mount onto the corrector, and then attach your Canon EOS camera to the bayonet mount to image large targets like the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connection\u003c\/td\u003e\n\u003ctd\u003eM48 x 0.75 Female Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection\u003c\/td\u003e\n\u003ctd\u003eCanon EOS Camera Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e10.6 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\"\u003eWilliam Optics 48mm T-Mount for Canon EOS\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":44967253475613,"sku":"WO-TM-CN-EOS-M48","price":54.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/William-Optics-48mm-T-Mount-for-Canon-TM-CN-EOS-M48-1__29196.1596133298.1280.1280.jpg?v=1684339552"},{"product_id":"starlight-instruments-3-0-adapter-and-3-5-to-convert-ap-threaded-end-cap-to-sbig-stl-11000-threads","title":"Starlight Instruments 3.0\" Adapter and 3.5\" to Convert 'AP Threaded End Cap' to 'SBIG STL 11000' Threads","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Starlight focusers with Astro-Physics threaded end caps to SBIG STL-11000 series cameras\u003c\/li\u003e\n\u003cli\u003eCreates a rigid, secure, all-threaded imaging train\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.0\" and 3.5\" Starlight Instruments focusers\u003c\/li\u003e\n\u003cli\u003eEliminates potential tilt and flexure from compression fittings\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\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\u003eStarlight Instruments 3.0\" \u0026amp; 3.5\" Adapter for A-P End Cap to SBIG STL-11000 Threads\u003c\/h2\u003e\n      \u003cp\u003eThis Starlight Instruments adapter provides a direct, secure threaded connection between a Starlight focuser equipped with an Astro-Physics (A-P) threaded end cap and an SBIG STL-11000 series camera. By creating a rigid, all-threaded optical train, it eliminates the potential for tilt, sag, or rotation that can occur with generic slip-fit or compression ring adapters. This component is essential for imagers who need to maintain perfect axial alignment for critical, long-exposure astrophotography.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eA Dedicated Threaded Connection for SBIG STL-11000 Cameras\u003c\/h3\u003e\n      \u003cp\u003eWhen assembling an imaging train with a large-format CCD like the SBIG STL-11000, every connection point is a potential source of flexure. This adapter replaces weaker connection methods with a robust, direct-thread solution. It ensures that your camera, filter wheel, and focuser are coupled with maximum rigidity, preserving the collimation and focus of your optical system throughout an imaging session.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eEliminates Flexure:\u003c\/strong\u003e A solid-threaded connection prevents the subtle tilt and sag that can ruin flat frames and elongate stars at the edge of the field, especially with heavy camera packages.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMaintains Orthogonality:\u003c\/strong\u003e Ensures your camera's sensor remains perfectly perpendicular to the optical axis, a critical requirement for achieving a flat, sharp field of focus from corner to corner.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSimple Integration:\u003c\/strong\u003e Designed to thread directly onto the Starlight Instruments 3.0\" or 3.5\" focuser's Astro-Physics style end cap and the SBIG STL-11000 camera body, creating a seamless and secure link.\u003c\/li\u003e\n      \u003c\/ul\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 purpose of this Starlight Instruments adapter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter is designed for a single, specific purpose: to connect a Starlight Instruments 3.0\" or 3.5\" focuser that has an \u003cstrong\u003eAstro-Physics (A-P) threaded end cap\u003c\/strong\u003e directly to the threads of an \u003cstrong\u003eSBIG STL-11000 series camera\u003c\/strong\u003e. It creates a secure, all-threaded connection for a stable imaging train.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this threaded adapter instead of a 2\" nosepiece for my SBIG STL-11000?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eA standard 2\" nosepiece held by thumbscrews or a compression ring can introduce slight tilt or sag, especially with a heavy camera like the SBIG STL-11000. This dedicated threaded adapter eliminates that risk by creating a rigid, fixed connection, which is critical for maintaining a flat field and round stars during long exposures.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this adapter work with original Astro-Physics focusers?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis adapter is specifically made for \u003cstrong\u003eStarlight Instruments focusers\u003c\/strong\u003e that are fitted with an Astro-Physics (A-P) compatible threaded end cap. It is not designed to attach directly to a stock Astro-Physics focuser drawtube.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter introduce any tilt into my imaging train?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, the primary benefit of this adapter is to \u003cstrong\u003eprevent tilt\u003c\/strong\u003e. By creating a direct, metal-on-metal threaded connection, it ensures your SBIG STL-11000 camera remains perfectly aligned with the focuser axis, which is essential for high-resolution imaging.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow does this adapter help when imaging faint objects like the Pelican Nebula (IC 5070) with my SBIG STL-11000?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eImaging faint targets like the Pelican Nebula (IC 5070) requires long sub-exposures where equipment stability is paramount. The rigidity provided by this threaded adapter prevents microscopic shifts or flexure as your telescope tracks across the sky. This stability ensures consistently sharp stars and a flat field, which is vital for stacking many hours of data on faint deep-sky objects.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich Starlight Instruments focusers is this adapter designed for?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAs indicated in the title, this adapter is designed to be used with Starlight Instruments' \u003cstrong\u003e3.0\" and 3.5\" Feather Touch focusers\u003c\/strong\u003e, provided they are equipped with the appropriate Astro-Physics threaded end cap.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/starlight-instruments-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eStarlight Instruments 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starlight Instruments","offers":[{"title":"Default Title","offer_id":44967253836061,"sku":"SI-A35-505AP-1","price":140.0,"currency_code":"CAD","in_stock":true}]},{"product_id":"starlight-instruments-orion-0-85-focal-reducer-adapter-w-m42-standard-t-thread","title":"Starlight Instruments Orion 0.85 Focal Reducer Adapter w\/ M42 Standard T-Thread","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eConnects Orion 0.85x Reducer to M42 T-Thread Cameras\u003c\/li\u003e\n\u003cli\u003eEngineered by Starlight Instruments\u003c\/li\u003e\n\u003cli\u003eEnsures a Rigid, Non-Flexing Imaging Train\u003c\/li\u003e\n\u003cli\u003eStandard M42 Female T-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\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\u003eStarlight Instruments Orion 0.85 Focal Reducer Adapter w\/ M42 Standard T-Thread\u003c\/h2\u003e\n\u003cp\u003eThis Starlight Instruments adapter creates a direct, secure attachment between an Orion 0.85x Focal Reducer and any camera or accessory using standard M42 T-threads. It is machined to replace push-fit or compression-ring holders, forming a solid, all-threaded optical train. This rigid connection is essential for eliminating tilt and flexure during long-exposure 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\u003eA Rigid, All-Threaded Connection for Orion Reducers\u003c\/h3\u003e\n\u003cp\u003eFor imagers using the Orion 0.85x Focal Reducer, achieving a rigid connection to the camera is critical for preventing optical misalignment. This adapter provides the necessary female M42 T-thread interface, allowing you to securely attach your DSLR, mirrorless, or dedicated astronomy camera. By creating a fully threaded system, you ensure your components remain perfectly square to the sensor throughout an imaging session, resulting in sharper stars across the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the primary purpose of the Starlight Instruments Orion Reducer Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIts sole purpose is to connect an \u003cstrong\u003eOrion 0.85x Focal Reducer\u003c\/strong\u003e directly to a camera or accessory that has male \u003cstrong\u003eM42 T-threads\u003c\/strong\u003e. This creates a secure, threaded connection that is superior to standard compression rings for astrophotography, as it prevents tilt and flexure in the imaging train.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy use this Orion Reducer Adapter instead of a standard 2\" nosepiece on my camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA standard nosepiece relies on thumbscrews and a compression ring, which can introduce slight tilt. This adapter threads directly onto the reducer, creating a solid, metal-on-metal connection that holds the camera sensor perfectly perpendicular to the optical axis. For imaging, a threaded connection is always the more stable and reliable option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs this adapter compatible with other focal reducers?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, this adapter is specifically machined by Starlight Instruments for the threads and optical spacing requirements of the \u003cstrong\u003eOrion 0.85x Focal Reducer\u003c\/strong\u003e. It is not a universal adapter and will likely not work with reducers from other brands.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of camera can I connect with this Orion Reducer Adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can connect any imaging device that uses the industry-standard M42 T-thread. This includes most dedicated astronomy cameras (from ZWO, QHY, etc.), as well as DSLR and mirrorless cameras via a camera-specific T-ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this adapter work with a ZWO ASI294MC Pro camera and an Orion ED80T CF telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. If you are using the Orion 0.85x Focal Reducer with your ED80T CF, this adapter will allow you to securely thread your ASI294MC Pro camera to the reducer. This setup creates a robust imaging train ideal for capturing deep-sky objects like the Andromeda Galaxy (M31) or the Orion Nebula (M42).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use a filter wheel with this Starlight Instruments adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, provided your total back focus distance remains correct. You would thread this adapter to the Orion reducer, then thread your filter wheel to the adapter's M42 threads, and finally thread your camera to the filter wheel. You must ensure the distance from the reducer to your camera sensor meets the reducer's specific back focus requirement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/starlight-instruments-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eStarlight Instruments 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starlight Instruments","offers":[{"title":"Default Title","offer_id":44967260848413,"sku":"SI-A20-287B","price":182.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Starlight-Instruments-Orion-0-85-Focal-Reducer-Adapter-M42-Standard-T-Thread-A20-287B-1__48867.1596313974.1280.1280.jpg?v=1684339806"},{"product_id":"howie-glatter-t-adater-w-parallizer-design","title":"Howie Glatter T-Adater w\/ Parallizer Design","description":"\u003c!-- more --\u003e\u003cp\u003e\u003cspan\u003eT-adapter with Howie Glatter's Parallizer Patent alignment feature allows your image train to stay parallel\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eThere is a misconception that the problem of the cylindrical slip-fit system we use for eyepieces and other optical accessories is centering. There are adapters and holders on the market that are advertised as “centering” or “self-centering”, but even if an accessory is pushed off-center a millimeter or more by clamping, that will not introduce a significant problem if the accessory and holder axis remain parallel. This is true even with a laser collimator. In contrast, angular misalignment between the accessory and the drawtube axis of even a few arc minutes can be detrimental, especially for collimation tools and camera adapters. In short, centering is nice, but parallelism is golden! \u003cb\u003e The Parallizer™ patented design insures parallel alignment with the drawtube axis of optical accesories such as eyepieces, camera adapters, and collimation tools. The Parallizer's unique, patented alignment feature assures that the drawtube and accessory axis will always be dead parallel. \u003cb\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/b\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003ch4\u003e News Release ! The Parallizer has been chosen a Sky \u0026amp;Telescope Hot Product for 2012.\u003c\/h4\u003e\u003cp\u003e\u003cspan\u003eS\u0026amp;T says it \"\"...provides three points of contact on the inner and outer surfaces, keeping everything perfectly square.\"\" I should add that the Parallizer design actually employs two parallel lines of contact and an opposite clamping point of contact for each of the inner, and outer surfaces. These four parallel lines, two forming a seat for the 2” drawtube, and two forming a seat for the 1 1\/4”accessory, assure drawtube-to-accessory axis parallelism. As Sky \u0026amp; Telescope says, \"\"It’s simple . . and it works . . !\"\" \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e“My crappy focuser only works as well as I need it to because of the Howie\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eGlatter\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eParallizer. The Parallizer design is very effective at overcoming the external and internal 'slop' that is served up when you dine at the table of imported mass-production.”\u003cspan\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cdiv data-custom-tab\u003e\n\u003cp data-custom-tab-title\u003eSpecifications\u003c\/p\u003e\n\u003cdiv\u003enull\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Howie Glatter","offers":[{"title":"Default Title","offer_id":44967269859613,"sku":"SI-EA20-205P-T","price":126.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/products\/Starlight-Instruments-T-Adater-Parallizer-Design-EA20-205P-T-1__58211.1596313991.1280.1280.jpg?v=1684339629"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/imaging-train.oembed?page=24","provider":"David Astro","version":"1.0","type":"link"}