SKYWATCHER FLATTENER & REDUCER FOR 100ED RC SWA-BDFF120ED

SKU: 75399500427

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SKYWATCHER FLATTENER & REDUCER FOR 100ED RC SWA-BDFF120EDThe SkyWatcher field flattener and reducer for the Evostar 100ED transform your telescope into a professional astrograph. 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

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