The Sharpstar 50EDPH comes with an optional specific 0.84x reducer， which is optimized for the Sharpstar 50EDPH and can provide more possibilities for telescope use. The 0.84x reducer can bring Sharpstar 50EDPH's focal ratio down to F4.6. This is a standard reducer with field flattening capabilities as well. A shorter focal ratio allows the OTA to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters, and faint, fast-moving celestial objects. The 0.84x reducer adopts a quadruplet design and supports an APS-C frame. The overall weight is 0.24kg. The back focus from the M48 thread is a standard 55mm. The front thread is M42*1 and the camera end thread is M48*0.75. At the same time, it has a built-in 2-inch filter thread, which can be directly installed and used. The overall CNC machined, both end threaded metal caps prevent ash when not in use. Specifications 0.84x Reducer Parameters （After attaching）50EDPH Focal length 230mm （After attaching）50EDPH Focal ratio f/4.6 Lens Number Quadruplet design Back Focus 55mm（from the base of M48 male thread） Weight 0.24kg Rear-end thread type M48×0.75 (M48×0.75 filter thread inside) 0.84x Reducer Size Diagram 0.84x Reducer Installation Spot Diagram
