Accessory · 2022–
Sky-Watcher Evolux 0.9x Reducer/Corrector
Key specifications
| Accessory type | Flattener/Reducer |
|---|---|
| Back focus | 55 mm |
| Factor | 0.9 × |
About
0.9x thread-on reducer/corrector for the Evolux ED doublets, producing a flat field across the image while shortening exposure time ~24% (e.g. Evolux 82ED 530mm f/6.45 -> 477mm f/5.8). Versions optimized per aperture (62mm and 82mm).