{"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":388.0,"currency_code":"USD","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\/fr-us\/products\/william-optics-elite-drawer-oag-kit","provider":"David Astro","version":"1.0","type":"link"}