Wide field imaging

Physics – Optics

Scientific paper

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12

Focusing, Image Processing, Optical Correction Procedure, Telescopes, Cassegrain Optics, Lenses, Paraboloid Mirrors

Scientific paper

New types of prime focus field correctors for Ritchey-Chretien telescopes which have significantly better imaging than those presently in use are discussed. A corrector consisting of two contiguous positive lenses of relatively low power followed by separated negative and positive lenses has been applied to the f/2.7 focus of the Cerro Tololo 4-m telescope. Also considered is a 2.0-deg corrector for the Anglo-Australian 2.9-m telescope.

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