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anastigmats's Usage Examples:

Such systems are called anastigmats.

(See, for example, Ritchey-Chrétien telescope, or three-mirror anastigmats such as LSST.

Rudolph in the first anastigmats (photographic objectives).

There are also a small number of off-axis unobstructed all-reflecting anastigmats which give optically perfect images.

Double-meniscus anastigmats use widely separated positive and negative surfaces, generally thick.

Double-meniscus anastigmats use widely separated positive and negative surfaces, generally.

Also, as the system of Mersenne + Schmidt is the sum of two anastigmats (the Mersenne system is an anastigmat, and so is the Schmidt system).