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Proceedings Paper

Two-mirror projection systems for simulating telescopes
Author(s): Paul G. Hannan; Pamela S. Davila
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Paper Abstract

Optical instruments designed for use with large telescopes need to be tested before being installed at their work site. This is especially true for space-based instruments. To perform these tests, an auxiliary optical system is required which simulates the telescope exit pupil. Two-mirror projection systems can be used for this purpose. In this paper the first-order geometric properties and third-order aberrations of the general two-mirror system used at finite conjugates are examined. Relations are given in terms of five design parameters: object distance, image distance, exit pupil size, and the two mirror magnifications. A particular application of these relations is presented for a system designed to simulate the HST, for ground testing of the next generation of scientific instruments to be installed in the observatory. We show that a sufficient number of degrees of freedom are available to meet requirements when both mirrors are conics.

Paper Details

Date Published: 1 December 1991
PDF: 11 pages
Proc. SPIE 1527, Current Developments in Optical Design and Optical Engineering, (1 December 1991); doi: 10.1117/12.48635
Show Author Affiliations
Paul G. Hannan, NASA/Goddard Space Flight Ctr. (United States)
Pamela S. Davila, NASA/Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 1527:
Current Developments in Optical Design and Optical Engineering
Robert E. Fischer; Warren J. Smith, Editor(s)

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