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The flattener is a lens that evens out the field, as this is slightly curved by the primary optics. This curvature causes stars that are imaged at the edge of the field of view to be less sharp. The flattener, also called a field flattener, corrects this effect. Astrophotographers can then enjoy images where the stars remain sharp right out to the edge of the exposure. The flattener is installed between the telescope and the camera.
Ideal for TS Optics Apokromatisk refraktor AP 130/910 CF-APO 130 FPL55 Triplet OTA
TS Optics is a brand of Teleskop-Service.
