Designed exclusively for the Askar 60F, this 0.75x reducer reduces the 60F focal ratio to F5.1, offering a faster focal ratio while incorporating 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, as well as faint or fast-moving celestial objects. Featuring a triplet optical lens design, this reducer supports a 44mm full-frame image circle. It has a standard back focus of 55mm (measured from the M48 thread), with M50×1 threads on both ends for easy system integration. The included 60F photographic extension tube offers both M54×0.75 and M48×0.75 adapter specifications, allowing direct connection to the reducer for convenient setup. The reducer's adapter features a built-in M48×0.75 thread for direct attachment of 2-inch filters, eliminating the need for additional adapters. Constructed using CNC machining, the reducer boasts a great finish and comes with front and rear metal thread caps for dust protection during storage.
Size Diagram
Installation
Optical Path Diagram
Spot Diagram
Product introduction
Specifications
