Eccentric-pupil reflecting-telescope development

Eugene W. Cross Jr.

doi:10.1117/12.131976

1 July 1992 Eccentric-pupil reflecting-telescope development

Eugene W. Cross Jr.

Proceedings Volume 10263, Lens Design: A Critical Review; 102630D (1992) https://doi.org/10.1117/12.131976
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

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.

Citation Download Citation

Eugene W. Cross Jr. "Eccentric-pupil reflecting-telescope development", Proc. SPIE 10263, Lens Design: A Critical Review, 102630D (1 July 1992); https://doi.org/10.1117/12.131976

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