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Proceedings Paper

Thermal design of interface region imaging spectrograph (IRIS) ULE primary mirror
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Paper Abstract

This paper presents the overall thermal design of the Interface Region Imaging Spectrograph (IRIS) telescope with focused descriptions of the primary mirror thermal design, telescope active thermal control system, ULE® mirror substrate thermal properties, and the thermal math model supporting the thermal design. The challenge of the IRIS primary mirror thermal design was to manage the un-filtered solar flux that directly impinges on the optical substrate, while maintaining the mirror within a narrow range of temperatures throughout the mission life. This thermal problem is compounded by a change in the absorption properties of ULE over time, due to UV light.

Paper Details

Date Published: 17 September 2012
PDF: 9 pages
Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84433E (17 September 2012); doi: 10.1117/12.925486
Show Author Affiliations
Sang C. Park, Smithsonian Astrophysical Observatory, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Carl H. Yanari, Lockheed Martin Solar and Astrophysics Lab. (United States)
Peter N. Cheimets, Smithsonian Astrophysical Observatory, Harvard-Smithsonian Ctr. for Astrophysics (United States)
William A. Podgorski, Smithsonian Astrophysical Observatory, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Jean-Pierre Wuelser, Lockheed Martin Space Systems Co. (United States)


Published in SPIE Proceedings Vol. 8443:
Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Stephen S. Murray; Jan-Willem A. den Herder, Editor(s)

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