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15 April 1993 Two-mirror/three-surface system for large optical astronomical telescopes
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Junhua Pan "Two-mirror/three-surface system for large optical astronomical telescopes", Proc. SPIE 1780, Lens and Optical Systems Design, 178021 (15 April 1993); doi: 10.1117/12.142872; https://doi.org/10.1117/12.142872
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