The Askar 60F 0.75x reducer is specifically optimized for the Askar 60F, reducing the focal ratio to f/5.1 for faster imaging. This triplet optical lens design supports a 44mm full-frame image circle and incorporates field-flattening correction capabilities. The faster focal ratio provides a wider field of view and shorter exposure times, making it particularly suitable for capturing large nebulae, dense star clusters, and faint or fast-moving celestial objects. Standard 55mm back focus from M48 thread with M50x1 threads on both ends for easy integration.