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

Sang C. Park; Carl H. Yanari; Peter N. Cheimets; William A. Podgorski; Jean-Pierre Wuelser

doi:10.1117/12.925486

17 September 2012 Thermal design of interface region imaging spectrograph (IRIS) ULE primary mirror

Sang C. Park, Carl H. Yanari, Peter N. Cheimets, William A. Podgorski, Jean-Pierre Wuelser

Proceedings Volume 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray; 84433E (2012) https://doi.org/10.1117/12.925486
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

Sang C. Park, Carl H. Yanari, Peter N. Cheimets, William A. Podgorski, and Jean-Pierre Wuelser "Thermal design of interface region imaging spectrograph (IRIS) ULE primary mirror", Proc. SPIE 8443, Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray, 84433E (17 September 2012); https://doi.org/10.1117/12.925486

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