Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED
- Sky-Watcher 0.85x Reducer/Flattener
- Compatible with both APS-C and full frame sensors
- APS-C (crop sensors) and smaller are recommended
- Provides a 55 mm back focus
- Lowers f/ratio from native f/5.8 (420 mm) to f/4.93 (355 mm)
- Reduces exposure time by 38% compared to native f/5.8
- 5.8 x 3.87 degree field of view when used with a full frame camera
- 3.79 x 2.53 degree field of view when used with APS-C crop sensor
- Includes thread-on adapter to mount reducer to Evostar 72ED focuser
This is the Sky-Watcher 0.85x Reducer/Flattener for their EvoStar 72ED telescope. Use this Reducer and Flattener attachment with the EvoStar 72ED optics to lower the f/ratio from native f/5.8 (420 mm) to f/4.93 (355 mm). It also reduces your imaging exposure time by 38% compared to native f/5.8, by providing a brighter image.
This Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED provides a nominal 55 mm back focal distance which is compatible with many imaging cameras. It also includes a convenient thread-on adapter to mount this reducer to the Evostar 72ED's focuser.
|Function:||0.85x Reducer/Flattener for their EvoStar 72ED Refractor|
|Back Focus:||55 mm|
|FOV Results:||5.8 x 3.87 degree with full frame camera; 3.79 x 2.53 degree with APS-C crop sensor|
|Color:||Black - metal|