The Sky-Watcher 0.9x Focal Reducer / Flattener for Evolux 82 ED APO Refractor is a thread-on reducer/corrector that produces a flat field across the entire image while shortening exposure time by 24%. It is optimized for Evolux 82mm refractors.
- 82mm, f/5.8, 477mm focal length
- 55mm back focus
- 36mm illuminated field
- Includes one ED element
- M56x1 female / M48 male threads
- Includes rotator/adapter with built-in cavity for 2" filters
UPC: 050234202077