Quote:
Originally Posted by gregbradley
An RC does not need a corrector for a flat field but it does "need" a flattener for field curvature to make the stars smaller at the corners.
Greg.
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Its the same thing.. A corrector corrects for an error(s). A flattner is still a corrector, as it "Corrects" for field curvature.
But i think we get you meant.
Theo