William Optics Reducer-Flattener

This accessory performs two critical tasks: it shortens your telescope's focal length, which gives you a wider field of view and faster imaging speeds, and it flattens the image plane to eliminate distortion at the edges of your frame.

This unit is specifically optimized for refractor telescopes. Because compatibility can vary based on your specific model's focal length and drawtube design, we recommend checking your telescope's manual or product page to confirm it supports this specific William Optics reducer.

Yes, this reducer-flattener is designed to provide full-frame sensor coverage. It ensures that your images remain sharp and free of field curvature all the way to the corners of a full-frame sensor.

By reducing the focal length by 0.8x, the accessory effectively increases the focal ratio of your telescope. This allows more light to reach your sensor in a shorter amount of time, which helps you capture fainter details more efficiently.

While the reducer-flattener connects to your telescope's focuser, you will still need a camera-specific T-ring or adapter to attach your camera body to the rear of the unit. Ensure you have the correct mount type for your camera brand.