SKYWATCHER FLATTENER & REDUCER FOR 120ED refractor Finderscope 9 x 50

Finderscope 9 x 50

which allows for the correction of the classical polar alignment and conic errors as well as the most important flexure terms of the optical tube

Polar scope (Southern and Northern Hemisphere)

Precession changes the direction of the Earth’s rotation axis

SKYWATCHER FLATTENER & REDUCER FOR 120ED refractor Finderscope 9 x 50The SkyWatcher field flattener and reducer for the Evostar 120ED transform your telescope into a professional astrographer. Refractors are affected by field curvature no matter what brand or diameter. This is not an issue for visual observations as eyepieces can partially compensate this aberration. On the contrary, when a refractor is used for astrophotography, a curved field will limit the corrected image circle and the stars on the border of the