Two-mirror/three-surface system for large optical astronomical telescopes

Details Two-mirror/three-surface system for large optical astronomical telescopes Two-mirror/three-surface system for large optical astronomical telescopes

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1780..789p&link_type=abstract

Proc. SPIE Vol. 1780, p. 789-796, Lens and Optical Systems Design, Hannfried Zuegge; Ed.

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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.

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