SKYWATCHER FLATTENER & REDUCER FOR 120ED refractor making it compatible with the

making it compatible with the Sky-Watcher and Saxon AZ-EQ6 mounts

Precession changes the direction of the Earth’s rotation axis

The 235mm PLUS support rings are designed for optical tubes with a diameter of Ø235mm

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

1x - M12 Mount fixing knob

SKYWATCHER FLATTENER & REDUCER FOR 120ED refractor making it compatible with theThe 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