This 3″ Full Frame Reducer, which is compatible with the ZWO FF80-APO Refractor, will effectively shorten the focal length of the scope to produce wide-field images in less time!The triplet optical design of the 0.76X reducer has one extra-low dispersion (ED) element to keep your astro-images sharp and full of contrast.
ZWO’s 0.76X Full Frame Reducer has a built-in M48X0.75 2″ filter thread for easy attachment, and has a standard back focus of 55 mm.
