This bundle includes the focuser and the reducer/flattener

The William Optics Dr. Flat Master is an apochromatic triplet reducer/flattener designed for 12" - 16" WO and GSO Ritchey-Chrétien telescopes. It reduces the focal length by 0.8x and flattens the field, making it ideal for full-frame sensors with a 52mm image circle. Featuring an M48 x 0.75 camera connection and a backfocus distance of 86.15mm, this accessory enhances your astrophotography setup by expanding your field of view and ensuring edge-to-edge sharpnes.

The William Optics R&P33 Focuser is a premium dual-speed focuser designed for 12-16" WO and GSO RC telescopes. Featuring ultra-smooth fine focus control and high load-bearing capacity, it ensures precise and reliable focusing. The focuser includes a camera angle rotator with an M92 thread for optional accessories.