Pegasus Indigo OAG (Off-Axis Guider) This thin and solid off-axis guider from Pegasus Astro is made of aircraft-grade aluminum and designed to be paired with the Indigo filter wheel. However, the Pegasus Indigo OAG has M2 & M3 through holes in its housing, allowing you to connect easily with a large number of CMOS cameras and third-party filter wheels.The main advantage of an OAG is that it uses the same optical path as your imaging camera, avoiding deflection problems that can occur when using a separate guidescope on top of your main telescope.The Indigo OAG has a back focus of just 10 mm. The telescope side adapter has a depth of 4mm, making a total back focus 14 mm. The large 12x8 mm fully multi-coated prism can be easily adjusted in height to allow better illumination of the imaging camera. If your camera's sensor is large, the prism can be moved up and secured so that the optical path of the sensor is not blocked.What's in the Box Pegasus OAG Telescope Side Adapter: M54F* Camera Side Adapter: M48F* *Either adapter adds 4mm of back focus. Specifications... Free Opening: 53.5 mm Telescope Connection: M58*0.75 / M54*0.75 Camera Connection: M48*0.75 / M54*0.75 female thread Back Focus: 10 mm (OAG) + 4 mm (Adapter) = 14 mm OAG & Indigo Filter Wheel Back Focus: 14 mm (OAG) + 19 mm (Indigo Filter Wheel) = 33 mm Prism Size: 12 mm x 8 mm
