Correctors and Reducers

55mm back focus Works with f/5 to f/7 refractors Compatible with APS-C size cameras or smaller. Accepts 2" filters Optimized for refractors with...

This is a field flattener for refractor-type telescopes with a focal ratio of f/5 to f/7 Causes no change to the telescope focal length 2-inch...

Explore Scientific’s 3-inch Field Flattener/0.7x Focal Reducer is a multi-faceted accessory designed to enhance your astrophotography experiences. ...

After hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like bril...

The CAA 0.8x Reducer/Field Flattener is an optimal accessory for those who are interested in astrophotography- Perfect to use with any camera of yo...

The new 3inch full frame reducer for 140PH APO is made of high quality metal, beautiful shape, the focal ratio is reduced from the original F6.5 to...

The 0.84x reducer can bring Sharpstar 50EDPH's focal ratio down to F4.6. This is a standard reducer with field flattening capabilities as well. A ...

The dedicated full-frame reducer of SHARPSTAR 61EDPH, which meets the need of full-frame photography. The reducer is equipped with a 2.3" tube, one...

SHARPSTAR 76EDPH F4.5 is the latest development in dedicated full-frame reducer, which meets the need of full-frame photography. The reducer is equ...

SHARPSTAR F4.4 Full Frame Focal Reducer made especially for 94EDPH refractor telescopes, it satisfy the demands of full-frame photography. The redu...

Designed to fully illuminate APS-C sensor on most APO refractors. The SharpStar 2" field flattener has a M42x0.74 male thread to connect the camera...

Designed to fully illuminate full frame sensor on most APO refractors. The SharpStar 2.5" field flattener has a M69 male thread to connect the came...

Following the advent of 0.95x coma corrector for Newtonian reflector, SHARPSTAR optics has well received the favor of customers with high praise.A...

Delivers stunning wide-field views with pinpoint stars to the edge of the field. Magnification remains unaltered.

0.85x Focal Reducer/Corrector for Sky-Watcher Evostar 100 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher Evostar 100 E...

0.85x Focal Reducer/Corrector for Sky-Watcher Evostar 120 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher Evostar 120 E...

0.85x Focal Reducer/Corrector for Sky-Watcher Evostar 80 ED APO is designed for serious Astro-Imagers. Optimized for the Sky-Watcher Evostar 80 ED ...

FeaturesThe HyperStar 8 lens converts a standard Celestron 8" SCT from f/10 to f/1.9, making the system 25 times faster. That means 25-times shorte...