DESIGN OF TELESCOPES OF THE CASSEGRAIN AND RITCHEYCHRETIEN TYPES
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UNAM, Observatorio Astronómico Nacional, CD MEXICO, DF, MEX
Abstract
The necessary equations for the design of a Cassegrain telescope are derived to first order. Also the conic constants are computed not only in the ordinary parabolic-hyperbolic system but also in the Ritchey-Chretien aplanatic system.