This ZWO Full Frame Reducer, which is compatible with the ZWO FF65-APO Refractor, will effectively shorten the focal ratio of the scope to f/4.8! Talk about producing wide-field images in less time!The quad optical design of the 0.75X reducer, when working in conjunction with your FF65 Astrograph, will take your astrophotography to the next level.
ZWO’s 0.75X Full Frame Reducer comes with an M54 and M48 threaded adapter and sports a built-in M48x0.75 2″ filter thread for flexibility and connection simplicity.The back focus distance is a standard 55 mm.
