Material selection for far Infrared telescope mirrors

Matthew East; J. Scott Knight; Lynn Allen; Ted Mooney; Keith Havey

doi:10.1117/12.2314310

6 July 2018 Material selection for far Infrared telescope mirrors

Matthew East, J. Scott Knight, Lynn Allen, Ted Mooney, Keith Havey

Proceedings Volume 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave; 106981N (2018) https://doi.org/10.1117/12.2314310
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

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.

Conference Presentation

Citation Download Citation

Matthew East, J. Scott Knight, Lynn Allen, Ted Mooney, and Keith Havey "Material selection for far Infrared telescope mirrors", Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106981N (6 July 2018); https://doi.org/10.1117/12.2314310

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