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Proceedings Paper

Optical design considerations for next-generation space and lunar telescopes
Author(s): Dietrich G. Korsch
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Paper Abstract

The paper discusses the optical requirements for future large space or lunar telescopes and their influence upon the fundamental system parameters. Two telescope concepts, a four-reflection three-mirror telescope, and a spherical-primary four-mirror telescope are introduced. Both have the potential for extreme high performance, and both use four reflections to accomplish this. Considering the present available coating capabilities, the reflectivity loss in the lower UV region due to the additional reflections, compared to a two-mirror system, seriously affects the utility of four-mirror telescopes for this part of the spectrum. Separate telescopes for the UV and for longer wavelengths may therefore be a practical solution, unless significant advances in coating technology are made in the foreseeable future.

Paper Details

Date Published: 1 September 1991
PDF: 8 pages
Proc. SPIE 1494, Space Astronomical Telescopes and Instruments, (1 September 1991); doi: 10.1117/12.46718
Show Author Affiliations
Dietrich G. Korsch, Korsch Optics, Inc. (United States)

Published in SPIE Proceedings Vol. 1494:
Space Astronomical Telescopes and Instruments
Pierre Y. Bely; James B. Breckinridge, Editor(s)

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