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Skip to content Celestron EclipSmart 10 Pack

Sky-Watcher 0.77x Reducer/Field Flattener for Evostar 150DX

SKU: SKY-S20208
$500.00

Add Apertura Optics & Sensor Cleaning Kit - 20 Piece to your order

$49.95
 

Sky-Watcher 0.77x Reducer/Field Flattener
for Esprit 150DX

This Sky-Watcher 0.77x reducer and field flattener is designed for the Evostar 150DX APO refractor. Slipping into the telescope's focuser, this reducer/field flattener boasts a number of features:

  • Reduces exposure time by 66% compared to the Evostar 150DX's native f/8
  • Reduces the focal ratio from f/8 (1200 mm) to f/6.2 (930 mm)
  • 89 mm back-focus (55 mm with spacer and M48 ring installed)
  • 34 mm fully illuminated field
  • Compatible with APS-C and full-frame sensors
  • APS-C field of view: 1.45 x 0.97-degrees
  • Full-frame field of view: 2.22 x 1.48-degrees
  • Built-in 2-inch filter cell for mounting filters into light path

Only compatible with the Evostar 150DX focuser, this reducer/field flattener also includes metal thread-on caps, M48 thread adapter, and back-focus spacer.