Optical design and testing of a fast large-aperture infrared space telescope

Colin M. Humphries; Yitzhak Nevo; Eli Ettedgui-Atad; John W. Harris

doi:10.1117/12.134843

1 January 1992 Optical design and testing of a fast large-aperture infrared space telescope

Colin M. Humphries, Yitzhak Nevo, Eli Ettedgui-Atad, John W. Harris

Proceedings Volume 1531, Advanced Optical Manufacturing and Testing II; (1992) https://doi.org/10.1117/12.134843
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

An optical design study for a next generation infrared space telescope has been performed. The concept is that of a passively cooled telescope of minimum aperture 2.5 meter with an F/1.2 primary and wavelength coverage from (lambda) equals 2 to at least 40 micrometers , and possibly to 100 micrometers . Compactness, low thermal emission from the optics and structure, diffraction limited imaging at (lambda) equals 2 micrometers , and sensitivity to misalignment aberrations and manufacturing errors were the main considerations for this study. Ray tracing results are presented showing the characteristics of the various designs considered. A preliminary investigation of stray light properties is also given. Special emphasis has been placed on the testing of such a fast primary, and optical systems using a lateral shearing interferometer are described for testing both the primary and the primary/secondary combination.

Citation Download Citation

Colin M. Humphries, Yitzhak Nevo, Eli Ettedgui-Atad, and John W. Harris "Optical design and testing of a fast large-aperture infrared space telescope", Proc. SPIE 1531, Advanced Optical Manufacturing and Testing II, (1 January 1992); https://doi.org/10.1117/12.134843

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