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Proceedings Paper

Two-mirror/three-surface system for large optical astronomical telescopes
Author(s): Junhua Pan; Xin He
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Paper Abstract

In this paper a new optical system for large astronomical telescopes is proposed. The center part of the primary mirror of a Cassegrain or R-C system is utilized to build a third mirror. Should we exchange the secondary of a Cassegrain or R-C system with another second mirror, the optical system becomes a powerful three-mirror system with good image quality and a relatively wide field. General equations for eliminating spherical aberration, coma, and astigmatism are given. An example of a 2-meter telescope system of this type is calculated and optimized.

Paper Details

Date Published: 15 April 1993
PDF: 8 pages
Proc. SPIE 1780, Lens and Optical Systems Design, (15 April 1993); doi: 10.1117/12.142872
Show Author Affiliations
Junhua Pan, Astronomical Instruments Research Ctr. (China)
Xin He, Astronomical Instruments Research Ctr. (China)

Published in SPIE Proceedings Vol. 1780:
Lens and Optical Systems Design

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