Skywatcher 0.85x focal reducer and field flattener for 100/900mm ED refractor
Increases field and photographic speed and corrects for field curvatureSkywatcher Field Flattener for ED refractors
The Skywatcher 0.85x focal reducer / field flattener has been designed for astronomers who want to use the renown ED Apo for astro photography. The flattener reduces the telescope's focal length by the factor of 0.85 and increases the useful field. As a positive side effect, the necessary integration times are significantly reduced. The field curvature that is unavoidable at most telescope systems is reduced to a nearly irrelevant level when using sensors up to APS-C format (24x16mm).
Optimal distance M48 - focal plane: 55mm The Reducers & Flatteners advantages
This flattener is recommended for the following telescopes
- Optimized for this particular refractor guaranteeing optimal results
- Better field illumination by M48 system - less vignetting compared with T2 systems.
- No expensive additional adapters necessary
- Skywatcher ED 100/900 (Pro Serie, Evostar ED100 ...)
- Celestron ED 100/900
- Vixen ED 100/900
- Orion ED 100/900
The Skywatcher 0,85x Reducer and Flattener for Evostar ED 100/900
increases the field of view and photographic speed, and corrects for