Sharpstar and Askar reducers and flatteners are precision optical accessories designed to optimise field correction and image flatness for astrophotography refractor telescopes. These components are essential for achieving sharp, round stars across the entire imaging sensor when using modern CMOS and DSLR cameras.
This collection includes dedicated reducer-flatteners, field flatteners, and focal reducers compatible with a wide range of Sharpstar and Askar APO refractors, including full-frame imaging systems. Common reduction factors include 0.7x, 0.74x, 0.8x, and 0.85x, supporting both wide-field and high-resolution astrophotography setups.
Engineered to deliver accurate back-focus spacing and consistent optical performance, Sharpstar and Askar correctors help minimise field curvature, improve edge-to-edge sharpness, and maximise image quality for deep-sky astrophotography and wide-field imaging applications.
