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Pegasus Astro Indigo OAG with Helical Focuser

Pegasus Astro Indigo OAG with Helical Focuser

par Pegasus Astro
UGC PEG-INDIGOAGPREM
$225.00 - $225.00
$225.00
$225.00 - $225.00
$225.00
Égalisation de prix!
  • 14mm Total Back Focus (10mm Body + 4mm Adapter)
  • Integrated Helical Focuser for 1.25" Guide Cameras
  • Adjustable 12x8mm Fully Multi-Coated Prism
  • 53.5mm Clear Aperture
  • CNC Machined 6061 Aluminum Alloy Body
  • Includes M54 and M48 Adapters
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  • Description
  • FAQ
  • Specifications
  • In the Box
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  • Warranty

  • Pegasus Astro Indigo OAG with Helical Focuser

    The 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.

    14mm Back Focus and Solid CNC Construction

    Engineered 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.

    12x8mm Adjustable Prism and 53.5mm Clear Aperture

    The 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.

    Integrated Helical Focuser for 1.25" Cameras

    This 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.

    Direct Connection: Indigo Filter Wheel and CMOS Camera Integration

    The 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.

  • What is the total back focus of the Indigo OAG with Helical Focuser?

    The Indigo OAG itself has an optical thickness of 10mm. The included M54 and M48 adapters each add 4mm of thickness. Therefore, the total back focus consumed by the OAG with one adapter attached is 14mm.

    How do I adjust the Indigo OAG's prism for my full-frame camera?

    The 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.

    Can I use the Indigo OAG with the Pegasus Astro Indigo Filter Wheel?

    Yes, 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.

    What guide cameras are compatible with the Indigo OAG's helical focuser?

    The helical focuser is designed to accept any guide camera with a standard 1.25” nosepiece. This covers the vast majority of popular planetary and guide cameras on the market.

    Will the Indigo OAG work with my Celestron EdgeHD 8" telescope?

    Yes. 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.

    What is the benefit of an Off-Axis Guider (OAG) over a separate guide scope?

    An OAG uses the same light path as your main imaging camera, completely eliminating the possibility of differential flexure. 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.

  • Product SKU PEG-INDIGO-OAGPREM
    Body Thickness 10mm
    Total Back Focus 14mm (with one 4mm adapter)
    Clear Aperture 53.5mm
    Prism Size 12 x 8 mm
    Prism Coating Fully Multi-Coated, Anti-Reflection
    Material CNC Machined 6061 Aluminum Alloy
    Guide Camera Connection 1.25" Barrel with Helical Focuser
    Telescope Side Adapter M54 Female Thread (adds 4mm)
    Camera Side Adapter M48 Female Thread (adds 4mm)
    Mounting Holes M2, M3, and 62mm pattern

    • Indigo OAG Body with Helical Focuser

      × 1

    • M54F Threaded Adapter (Telescope Connection)

      × 1

    • M48F Threaded Adapter (Camera Connection)

      × 1

  • Pegasus Astro 2-Year Warranty