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Proceedings Paper

Optical design and testing of a fast large-aperture infrared space telescope
Author(s): Colin M. Humphries; Yitzhak Nevo; Eli Ettedgui-Atad; John W. Harris
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Paper 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.

Paper Details

Date Published: 1 January 1992
PDF: 17 pages
Proc. SPIE 1531, Advanced Optical Manufacturing and Testing II, (1 January 1992); doi: 10.1117/12.134843
Show Author Affiliations
Colin M. Humphries, Royal Observatory Edinburgh (United Kingdom)
Yitzhak Nevo, Royal Observatory Edinburgh (United Kingdom)
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)
John W. Harris, Royal Observatory Edinburgh (United Kingdom)

Published in SPIE Proceedings Vol. 1531:
Advanced Optical Manufacturing and Testing II
Victor J. Doherty, Editor(s)

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