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reducers, flatteners & correctors

Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED - S20212

Sky-Watcher USA   ——   SKU: SWU-S20212
$560.00 CAD
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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.

Specifications:

Manufacturer: Sky-Watcher
Model/SKU: S20212
Function: 0.85x Reducer/Flattener for their EvoStar 72ED Refractor
Reduction: 0.85x
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
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