SKYWATCHER FLATTENER & REDUCER FOR 80ED hood Center to center distance :

SKU: 74551528381

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SKYWATCHER FLATTENER & REDUCER FOR 80ED hood Center to center distance :The SkyWatcher field flattener and reducer for the Evostar 80ED transforms your telescope into a professional astrograph. The 0. 85x reduction factor will convert the focal ratio of your Evostar 80ED from f 7. 5 to f 6. 375 with the advantage of shortening the exposure time and extending the field of view. The native 600mm focal length is reduced down to 510mm. Refractors are affected by field curvature no matter what brand or diameter. This is not an

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