Reducers, Flatteners & Coma Correctors

This field flattener is designed to work with the Altair Astro Starwave 80mm F6 ED Triplet APO. It has an M48 rear thread adaptor for connecting your DSLR or CCD camera.

This is a brand new and unused item. Comes in its original packaging with extra 5mm and 10mm extension tubes. Only one at this price.

SkyWatcher dedicated high quality Field Flattener for Esprit 150 Super Apo triplet refractors.

0.8x adjustable reducer flattener by William Optics to suit the Zenithstar 73 series.

An optical chain is as good as its weakest link. With the development of 82 degree Nagler and 100+ degree Ethos eyepieces, Tele Vue offers the largest, flattest and best corrected visual fields in the industry.

Celestron’s new EdgeHD reducers feature a custom 4-element optical design engineered to maintain the flat-field performance of our award winning EdgeHD optical system. Unlike generic reducers, our premium reducers provide substantial back focus to accommodate an assortment of imaging accessories.