0.9x thread-on reducer/corrector produces a flat field across the entire image while shortening exposure time by 24%. 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-inch filters
