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Proceedings Paper

Eccentric-pupil reflecting-telescope development
Author(s): Eugene W. Cross
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Paper Abstract

The development of a special purpose telescope is described, which is capable of complete stray light rejection, parfocalization of all wavelengths, and diffraction-limited image quality, all with only "gentle" aspherics, even for a 2.5-meter aperture. The main purpose of this new design is as a solar coronagraph, although there are several other possible astronomical and military applications.

Optical design codes whose optimization routines rely heavily on aberration coefficients proved ineffective in finding "global" optima in the non-rotationally symmetric world of "compact" eccentric pupil telescopes. Manual "steering" of the optimization process resulted in "rediscovery" of the Schwarzschild Principle.

Paper Details

Date Published: 1 July 1992
PDF: 43 pages
Proc. SPIE 10263, Lens Design: A Critical Review, 102630D (1 July 1992); doi: 10.1117/12.131976
Show Author Affiliations
Eugene W. Cross, Cross Optics (United States)

Published in SPIE Proceedings Vol. 10263:
Lens Design: A Critical Review
Warren J. Smith, Editor(s)

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