Reducer adapted for Sky-Watcher 100ED refractors. Used to reduce the focal length to 0.85x, improves field correction. By using the M48x0.75 ring with a Canon or Nikon mount you can connect the camera to the reducer.
• fold: 0.85x • purpose: Sky-Watcher 100/900 APO ED
(below photo of ED80 flatcoat - identical appearance except for the intended use)