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Sky-Watcher Focal Reducer Field Flattener 0.77x for Esprit 150ED

(Only 2 Left)
Free shipping
SKU: SKY-S20215
$500.00

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$9.99
 

Sky-Watcher Focal Reducer Field Flattener
for Esprit 150ED

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

  • Drops the focal ratio from the native f/7 (1050 mm) to f/5.4 (810 mm)
  • Back-focus: 90 mm (55 mm with spacer and M48 ring installed)
  • Reduces exposure time by 68% compared to the native f/7
  • Mount filters with the built-in 2" filter cell
  • 36 mm fully illuminated field
  • APS-C field of view: 1.66 x 1.11-degrees
  • Compatible with full frame format
  • Full frame field of view: 2.54 x 1.7-degrees