The Askar 0.75x focal reducer for the 71F APO telescope is an essential accessory for astrophotography. It enhances the focal ratio of the Askar 71F APO telescope to f/5.2, significantly reducing the time needed for image capture. Additionally, it corrects optical aberrations at the edges of the image, ensuring perfectly pinpoint star images across the entire field of view during imaging.
This three-element focal reducer features a 44 mm image circle, making it fully compatible with full-frame cameras. On the camera side, it offers M48 and M54 threads, allowing for broad compatibility with various systems. The product provides the standard 55 mm back focus distance.
Inside, you'll find a 2" filter thread.