About this product
This Focal Reducer is designed for use with the Askar FRA400 Astrograph, the new Askar FRA400 f/3.9 full-frame focal reducer reduces the effective focal ratio by a factor of 0.7x, taking this already fast f/5.6 scope down to a f/3.9 system with 280mm focal length.
That means a wider field of view and a greatly reduced exposure time, making it easier to capture wide-field images of large deep-sky objects. The reducer has a back focus of 55mm and includes threads for M48X0.75 (2") filters.
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