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Material selection for far Infrared telescope mirrors
Author(s): Matthew East; J. Scott Knight; Lynn Allen; Ted Mooney; Keith Havey
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Paper Abstract

Large visible telescopes present challenging requirements for manufactured surface figure and stability. By comparison, far infrared (IR) telescopes relax many of these requirements by ~100x. These relaxed requirements may translate into reduced cost, schedule, mass, and system complexity. This paper explores how different mirror substrate materials might take advantage of these requirements while operating in a cryogenic environment. Primary mirror materials are evaluated for an Origins Space Telescope (OST) concept, using a 9.1 m segmented aperture in a 30 μm diffraction limited system.

Paper Details

Date Published: 6 July 2018
PDF: 8 pages
Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106981N (6 July 2018); doi: 10.1117/12.2314310
Show Author Affiliations
Matthew East, Harris Corp. (United States)
J. Scott Knight, Ball Aerospace and Technologies Corp. (United States)
Lynn Allen, Harris Corp. (United States)
Ted Mooney, Harris Corp. (United States)
Keith Havey, Harris Corp. (United States)

Published in SPIE Proceedings Vol. 10698:
Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave
Makenzie Lystrup; Howard A. MacEwen; Giovanni G. Fazio; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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