Skywatcher 0.85x focal reducer and field flattener for 120/900mm ED refractorIncreases 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 120/900 (Pro Serie, Evostar ED120 ...)
Celestron ED 120/900
Vixen ED 120/900
Orion ED 120/900
The Skywatcher 0,85x Reducer and Flattener for Evostar ED 120/900
increases the field of view and photographic speed, and corrects for