Quote:
|
Originally Posted by janoskiss
...A scaled up field will have less curvature, i.e., for the same r, you are closer to the focal plane in a long focal length mirror. (e.g., think of circular arc of fixed length as you blow up the circle.) So a small fast mirror will have a more strongly curved field than a large mirror of the same f-ratio.
|
A question: what effect is a paracorr designed to have on field curvature, as distinct from coma?
DN