The Askar 0.75x focal reducer for the 71F APO telescope is an essential accessory for astrophotography. It increases the focal ratio of the Askar 71F APO telescope to f/5.2, significantly reducing the exposure time required for imaging. It also corrects optical aberrations at the edge of the field, delivering perfectly pinpoint stars across the entire field of view.
The three-element focal reducer offers a 44 mm image circle, making it fully suitable for use with full-frame cameras. On the camera side, it features M48 and M54 threads, ensuring broad compatibility with various systems. The product provides the standard 55 mm back focus.
The product features a 2" filter thread.