{"title":"William Optics Off-Axis Guiders \u0026 Guide Scopes","description":"\u003cp\u003eWilliam Optics off-axis guiders and guide scopes give a guide camera a view of a guide star for autoguiding. The Elite Drawer OAG kit picks off light inside the imaging train, which avoids flexure between guide and main optics at longer focal lengths.\u003c\/p\u003e\u003cp\u003eGuide scopes include the UniGuide 32mm and 50mm, the 50mm Guiding Scope in black or red and the larger GuideStar 61. Slide-base 50mm guiding rings and saddle handle bars with guiding rings mount a guide scope on top of the main telescope.\u003c\/p\u003e","products":[{"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-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-elite-drawer-oag-kit","title":"William Optics Elite Drawer OAG Kit","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eIntegrates Off-Axis Guider and Filter Drawer\u003c\/li\u003e\n\u003cli\u003e37.5 mm Optical Length\u003c\/li\u003e\n\u003cli\u003eSupports M48, M54, and M68 Connections\u003c\/li\u003e\n\u003cli\u003eMagnetic M48 Filter Holder\u003c\/li\u003e\n\u003cli\u003e336 g (11.85 oz) Total Weight\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 Elite Drawer OAG Kit\u003c\/h2\u003e\n\u003cp\u003eThe William Optics Elite Drawer OAG Kit streamlines your imaging train by combining a precise off-axis guider and a magnetic M48 filter drawer into a single 336 g unit. This integrated design consumes only 37.5 mm of optical length, providing a rigid, compact solution for connecting telescopes and cameras using the included M48, M54, and M68 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\u003eA 37.5 mm Solution for Complex Imaging Trains\u003c\/h3\u003e\n\u003cp\u003eBy merging two critical accessories, the Elite Drawer OAG eliminates common sources of flexure and saves precious back focus. Its total optical path of just 37.5 mm makes it possible to build complex imaging trains with correctors or reducers, even on systems with limited focus travel. The single, solid body weighs only 336 g, reducing mechanical strain on your focuser compared to stacking separate components.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eOff-Axis Guiding with an Adjustable Prism and Helical Focuser\u003c\/h3\u003e\n\u003cp\u003eThe OAG features a high-transmission prism that can be adjusted in height, allowing you to pick off guide stars from the edge of the field without vignetting your main camera sensor. The dedicated guide port accepts both M42-threaded and 1.25\" push-in guide cameras. A non-rotating helical focuser provides smooth, precise focus adjustments for your guide camera, ensuring you achieve sharp stars without disturbing the main imaging 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\u003eSecure Magnetic M48 Filter Swaps\u003c\/h3\u003e\n\u003cp\u003eIntegrated into the OAG body is a magnetic drawer system designed for a single M48 (2-inch) mounted filter. This design allows for rapid filter changes without needing to disassemble any part of your imaging train. The magnetic holder ensures the filter is seated securely and parallel to the sensor plane, maintaining optical alignment from shot to shot.\u003c\/p\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, M54, and M68 Adapters for System Flexibility\u003c\/h3\u003e\n\u003cp\u003eThis kit is built for broad compatibility across different telescope and camera systems. It includes adapters for M48, M54, and M68 connections on the telescope side, and M48 and M54 adapters for the camera side. This extensive set of included hardware ensures you can integrate the Elite Drawer OAG into most modern imaging setups right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eElite Drawer OAG vs. Separate Components: An Integrated Advantage\u003c\/h3\u003e\n\u003cp\u003eChoosing an integrated system like the Elite Drawer OAG offers distinct advantages over purchasing a separate OAG and filter drawer.\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Focus Savings:\u003c\/strong\u003e A typical OAG and filter drawer might consume 20mm + 21mm (41mm) of back focus. At 37.5 mm, this integrated unit saves critical millimeters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Flexure:\u003c\/strong\u003e With one solid body instead of two separate accessories threaded together, you have fewer potential points of mechanical flex, leading to rounder stars across long exposures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplicity and Weight:\u003c\/strong\u003e A single, 336 g component is often lighter and always simpler to manage in the dark than two separate parts. The trade-off is the inability to use a filter wheel for automated changes, as this system is designed for single-filter use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the total optical length of the William Optics Elite Drawer OAG Kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe William Optics Elite Drawer OAG Kit adds exactly \u003cstrong\u003e37.5 mm\u003c\/strong\u003e of optical length to your imaging train. This compact measurement is crucial for systems with limited back focus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat filter size does the Elite Drawer OAG Kit use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe magnetic filter holder is designed to accept one standard \u003cstrong\u003eM48 x 0.75 (2-inch) mounted filter\u003c\/strong\u003e. It is not compatible with unmounted filters or other filter sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I focus the guide camera on the Elite Drawer OAG Kit?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe guide port features a built-in \u003cstrong\u003ehelical focuser\u003c\/strong\u003e. By turning the knurled ring on the guide port, you can make fine focus adjustments to your guide camera without affecting the main camera focus. The port accepts both 1.25\" push-in and M42-threaded guide cameras.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 37.5 mm optical path of the Elite Drawer OAG Kit work with my Newtonian that has limited back focus?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAt 37.5 mm, the Elite Drawer OAG is one of the more back-focus-friendly integrated solutions available. However, you must first confirm the total available back focus of your specific Newtonian telescope and imaging train. Measure the distance from your coma corrector's shoulder to the required sensor position and ensure it is greater than 37.5 mm plus any other required spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I connect the Elite Drawer OAG between my William Optics refractor with an M68 focuser and my camera with M48 threads?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe kit includes the necessary adapters for this exact scenario. You would use the included \u003cstrong\u003eM68 adapter\u003c\/strong\u003e to thread the OAG onto your telescope's focuser drawtube. On the other side, you would use the included \u003cstrong\u003eM48 adapter\u003c\/strong\u003e to connect to your camera's M48 threads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the prism position adjustable on the William Optics Elite Drawer OAG?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the prism stalk can be raised or lowered. This allows you to position the prism at the optimal depth to intercept guide stars from the edge of your telescope's corrected image circle without casting a shadow on your main imaging 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\u003eOptical Length\u003c\/td\u003e\n\u003ctd\u003e37.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Connections\u003c\/td\u003e\n\u003ctd\u003eM54, M48, M68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection (Main)\u003c\/td\u003e\n\u003ctd\u003eM54, M48\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Connection (Guide)\u003c\/td\u003e\n\u003ctd\u003eM42, 1.25\" push-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e336 g \/ 11.85 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/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":52662242214173,"sku":"WO-M-OAG-ED","price":543.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/William-Optics-Elite-Drawer-OAG-1.jpg?v=1785457639"}],"url":"https:\/\/davidastro.com\/collections\/william-optics-off-axis-guiders-and-guide-scopes.oembed","provider":"David Astro","version":"1.0","type":"link"}