The Askar 0.74x focal reducer for the 111F APO telescope is an essential accessory for astrophotography. It reduces the focal ratio of the Askar 111F APO telescope to f/5.1, significantly shortening exposure times. It also corrects optical aberrations at the edge of the image, delivering perfectly pinpoint stars across the entire field of view.
The three-element focal reducer features a 44 mm image circle, making it fully suitable for use with full-frame cameras. The camera side features M48 and M54 threads, ensuring broad compatibility with different systems. The product provides the standard 55 mm back focus.
The product features a 2" filter thread.