Sky-watcher 0.77x Reducer/Flatenner for Esprit-150ED Triplet is Designed specifically for the Sky-Watcher Esprit-150 ED Apo Refractor, the new three-lens Focal Reducer/Flattener has a reduction factor of 0.77x. It comes with a standard adaptor with M48 thread edge and 55mm back focus for use with Sky-Watcher's M48 Canon EOS (code 20237) and Nikon (code 20238) adaptor rings. After removing the adaptor, an M71x1 internal thread with maximum 75mm back focus is available for self-made adaptor solutions. The Reducer/Flattener produces a fully illuminated and corrected image circle of 36mm diameter and is therefore perfectly suitable for image formats up to APS-C but can also be used for full format.
Effectively reduces Focal Ratio of Esprit-150ED to f/5.4
Three-Lens Fully Optical Design
Full Frame Compatible
2-Inch Filter Compatible
75mm Back Focus or 55mm with the supplied adaptor
M48 x 0.75 Adaptor
Type: 0.77x Focal Reducer / Field Flattener
Image Circle 36mm
Weight 910g (with end caps)
Warranty: 2 Years
Kit content Sky-watcher-0.77x-Reducer-for-Esprit-150ED User guide
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