ZWO 0.7x Full-Frame Reducer for FF107-APO and FF130-APO Refractors
This 3" Full Frame Reducer, which is compatible with the ZWO FF107-APO Refractor and the FF130-APO Refractor, will effectively shorten the focal length of either scope to produce wide-field images in less time! The triplet optical design of the 0.7X reducer has one extra-low dispersion (ED) element to keep your astro-images sharp and full of contrast.
ZWO's 0.7X Full Frame Reducer comes with an M68, M54 and M48 adapter and has a standard back focus of 55 mm.