ZWO-OAG Off Axis Guider
NEW from ZWO Thin Off Axis Guider that allows you to Autoguide in SCTs and Refractors whilst only adding 16.5mm to the optical path.
Features a precision 8mm x 8mm prism, it comes complete with M48 and T2 adapters to the scope and M42 and M48 adapters to camera to keep back focus to a minimum, a 5mm spacer for guide cameras where the back focus is only 12.5mm.
Compatible with all ZWO ASI cameras.
A must for Cassegrains,and Refractors No guide scope – No differential flexure between Guide scope and main telescope.