Askar 0.75x Reducer for the 60F Refractor - 60F-RED

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This 0.75x APO reducer takes the Askar 60F's focal ratio down to f/5.1. A shorter focal ratio allows the telescope OTA to have a wider field of view and faster exposure times, maki ng it suitable for capturing large areas of nebulae, star clusters, and faint, fast-moving celestial objects. The 0.75x reducer adopts a triplet design and supports a 44mm full-frame image circle. The overall weight is 0.2 kg. The back focus from the M48 thread is a standard 55mm. Both end threads are M59*1. 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. The reducer is CNC machined, and both ends sport threaded metal caps to protect the optics when not in use. Specifications Parameter 60F Focal length with Reducer 311mm 60F Focal ratio with Reducer f/5.1 Number of Elements Three (Triplet) Back Focus 55mm from the base of M48 male thread Weight 0.2kg Rear-end thread type M59*1 Show more