FF107 Quadruplet APO

The ZWO FF107 is a 107mm f/7 quadruplet apochromatic refractor featuring an advanced quadruplet configuration with two ED glass elements that virtually eliminates chromatic distortion, bringing stars into pinpoint focus with vivid color across the full field. Featuring a self-flattening design with no need for a separate field flattener, this air-spaced APO delivers small and round stars with a central RMS radius of 3 micrometers. The telescope supports full frame cameras with a 44mm imaging circle, making it ideal for both planetary and deep-sky astrophotography, as well as visual observation with eyepieces and diagonals.