Tecnosky 0.8X Field Flattener / reducer for 130mm apo Refractors
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Three element corrector / reducer for triplet refractor 130 mm F7
It reduces the focal length of the instrument to F5.5 that transforms the refractor into a powerful wide field astrograph. At the same time it corrects the same field on full frame sensors
Screw directly on 3 "Tecnosky focuser with M68x1mm thread.
Imager side there is a thread M48x0.75mm
Diagonal corrected field of 42mm.
The length of the corrector / reducer is 80mm, the back focus is 55mm