Sky-Watcher ProED/Evostar 80 EDX Reducer/Corrector - 0.85x - S20200 Power Supply Celestron recommends removing it for

Celestron recommends removing it for optimal use

This adjustment will give you the exact feel for pointing that you desire

the Celestron Schmidt-Cassegrain optical system offers bright

Excellent 65 degree field of view

A sharp looking CNC body is the first indicator the GEM45EC is a top quality mount

Sky-Watcher ProED/Evostar 80 EDX Reducer/Corrector - 0.85x - S20200 Power Supply Celestron recommends removing it forSky Watcher 80ED Reducer Corrector 0. 85x This Sky Watcher 0. 85x Focal Reducer Corrector for the Sky Watcher Evostar 80 EDX or PRO 80 ED APO was designed for serious Astro Imagers. This corrector lens is optimized for the Sky Watcher 80 mm Evostar or Pro refractor telescopes. This accessory, which is of superb quality, effectively reduces the telescopes focal length by a factor of 0. 85x, and it simultaneously provides much improved field flattening