The ZWO FF65 APO, part of the FF series, is an excellent choice for astro-photography. This high-performance 65mm f/6.4 astrograph is designed for flat field imaging and comes with a 2.5" focuser featuring a built-in camera rotator and finder shoe compatible with Vixen style finder brackets. It's compact and lightweight, measuring under 13" and weighing 6 pounds with rings and dovetail. The 65mm aperture scope uses a dual ED quintuplet optical system for a flat field. While it's fast at f/6.4, an optional 0.75x Reducer can further speed it up to f/4.8 and 312mm. The ZWO FF65 supports a 44mm image circle, making it suitable for full frame cameras. It includes M68, M54m, and M48 camera adapters, with the M48 being filter-threaded.