{"product_id":"pegasus-astro-indigo-oag-with-helical-focuser","title":"Pegasus Astro Indigo OAG with Helical Focuser","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e14mm Total Back Focus (10mm Body + 4mm Adapter)\u003c\/li\u003e\n\u003cli\u003eIntegrated Helical Focuser for 1.25\" Guide Cameras\u003c\/li\u003e\n\u003cli\u003eAdjustable 12x8mm Fully Multi-Coated Prism\u003c\/li\u003e\n\u003cli\u003e53.5mm Clear Aperture\u003c\/li\u003e\n\u003cli\u003eCNC Machined 6061 Aluminum Alloy Body\u003c\/li\u003e\n\u003cli\u003eIncludes M54 and M48 Adapters\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\u003ePegasus Astro Indigo OAG with Helical Focuser\u003c\/h2\u003e\n\u003cp\u003eThe Pegasus Astro Indigo OAG with Helical Focuser combines a thin 10mm body with a precision focusing mechanism to eliminate differential flexure from your imaging train. Its solid CNC-machined body provides a generous 53.5mm clear aperture, while the 12x8mm fully multi-coated prism picks off bright, sharp guide stars for your 1.25\" guide camera. With the included M54 and M48 adapters, the total optical path consumes only 14mm of back focus, making it compatible with a wide range of modern CMOS and CCD setups.\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\u003e14mm Back Focus and Solid CNC Construction\u003c\/h3\u003e\n\u003cp\u003eEngineered for modern, back-focus-critical imaging trains, the Indigo OAG body has a minimal 10mm optical thickness. When paired with either the included M54 or M48 adapter, which adds 4mm, the total back focus consumed is a slim 14mm. This thin profile, machined from a single piece of airplane-grade 6061 aluminum alloy, ensures rigidity and stability, capable of supporting heavy cameras and filter wheels without flexure.\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\u003e12x8mm Adjustable Prism and 53.5mm Clear Aperture\u003c\/h3\u003e\n\u003cp\u003eThe Indigo OAG utilizes a large 12x8mm rectangular prism, fully multi-coated to maximize light transmission to your guide camera. This ensures you can find bright guide stars even in sparse regions of the sky. The prism's height is fully adjustable via setscrews, allowing you to position it perfectly at the edge of your main camera's sensor, preventing any obstruction of the primary optical path, especially when using larger full-frame sensors inside the generous 53.5mm clear aperture.\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 Helical Focuser for 1.25\" Cameras\u003c\/h3\u003e\n\u003cp\u003eThis premium version of the Indigo OAG includes an integrated, non-rotating helical focuser, enabling you to achieve sharp, precise focus with your 1.25\" guiding camera. The smooth focusing action allows for fine adjustments without disturbing the imaging train's alignment. This eliminates the need to repeatedly slide the guide camera in and out of its holder, securing a parfocal relationship with your main imager quickly and reliably.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eDirect Connection: Indigo Filter Wheel and CMOS Camera Integration\u003c\/h3\u003e\n\u003cp\u003eThe Indigo OAG is designed to be the central hub of your imaging system. It features a 62mm through-hole pattern for direct, secure attachment to the Pegasus Astro Indigo Filter Wheel, creating a rigid imaging cluster with a combined back focus of only 33mm. The OAG also includes M2 and M3 through-holes in its body, allowing for direct mounting to a wide variety of modern CMOS cameras for the most secure, flex-free connection possible.\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 total back focus of the Indigo OAG with Helical Focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Indigo OAG itself has an optical thickness of \u003cstrong\u003e10mm\u003c\/strong\u003e. The included M54 and M48 adapters each add \u003cstrong\u003e4mm\u003c\/strong\u003e of thickness. Therefore, the total back focus consumed by the OAG with one adapter attached is \u003cstrong\u003e14mm\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I adjust the Indigo OAG's prism for my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe 12x8mm prism is mounted on a stalk that can be moved up or down. To avoid vignetting your main sensor, loosen the setscrews on the side of the OAG body, raise the prism just enough so it sits outside the light cone of your main imaging sensor, and then retighten the screws to lock it in place. This ensures maximum illumination for both your main camera and your guide camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Indigo OAG with the Pegasus Astro Indigo Filter Wheel?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Indigo OAG is designed to bolt directly to the Indigo Filter Wheel using the 62mm through-hole pattern. This creates a solid, integrated unit. The combined back focus of the Indigo Filter Wheel (19mm) and the Indigo OAG (14mm) is 33mm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat guide cameras are compatible with the Indigo OAG's helical focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe helical focuser is designed to accept any guide camera with a standard \u003cstrong\u003e1.25” nosepiece\u003c\/strong\u003e. This covers the vast majority of popular planetary and guide cameras on the market.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the Indigo OAG work with my Celestron EdgeHD 8\" telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The included M54 female threaded adapter allows direct connection to many standard flatteners and reducers. For a Celestron EdgeHD 8\", you would typically connect to the M48 threads on the .7x reducer or a camera adapter. The 14mm back focus of the Indigo OAG fits well within the 146mm back focus requirement of the EdgeHD optical system, leaving plenty of room for your filter wheel and camera.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of an Off-Axis Guider (OAG) over a separate guide scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAn OAG uses the same light path as your main imaging camera, completely eliminating the possibility of \u003cstrong\u003edifferential flexure\u003c\/strong\u003e. This is a common problem where a separate guide scope and the main telescope flex or shift independently, causing elongated stars even with perfect guiding. The Indigo OAG ensures your guide camera sees the exact same movement your imaging camera does.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct SKU\u003c\/td\u003e\n\u003ctd\u003ePEG-INDIGO-OAGPREM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Thickness\u003c\/td\u003e\n\u003ctd\u003e10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Back Focus\u003c\/td\u003e\n\u003ctd\u003e14mm (with one 4mm adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e53.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Size\u003c\/td\u003e\n\u003ctd\u003e12 x 8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrism Coating\u003c\/td\u003e\n\u003ctd\u003eFully Multi-Coated, Anti-Reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCNC Machined 6061 Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGuide Camera Connection\u003c\/td\u003e\n\u003ctd\u003e1.25\" Barrel with Helical Focuser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTelescope Side Adapter\u003c\/td\u003e\n\u003ctd\u003eM54 Female Thread (adds 4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Side Adapter\u003c\/td\u003e\n\u003ctd\u003eM48 Female Thread (adds 4mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Holes\u003c\/td\u003e\n\u003ctd\u003eM2, M3, and 62mm pattern\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\"\u003eIndigo OAG Body with Helical Focuser\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\"\u003eM54F Threaded Adapter (Telescope Connection)\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\"\u003eM48F Threaded Adapter (Camera Connection)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/pegasusastro.com\/download\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e \n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/pegasus-astro-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePegasus Astro 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":52686362312989,"sku":"PEG-INDIGOAGPREM","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/pegasus-astro-indigo-oag-with-helical-focuser-1.png?v=1793649428","url":"https:\/\/davidastro.com\/en-int\/products\/pegasus-astro-indigo-oag-with-helical-focuser","provider":"David Astro","version":"1.0","type":"link"}