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Proceedings Paper

Optimizing cryogen utilization on Spitzer Space Telescope
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Paper Abstract

The instruments of the Spitzer Space Telescope are cooled directly by liquid helium, while the optical system is cooled by helium vapor. The greater the power dissipation into the liquid helium, the more vapor is produced, and the colder the telescope. Observations at shorter wavelengths do not require telescope temperatures as low as those required at longer wavelengths. By varying the telescope temperature with observing wavelength, we are extending the mission lifetime by an estimated 9%.

Paper Details

Date Published: 12 October 2004
PDF: 10 pages
Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.551949
Show Author Affiliations
Charles R. Lawrence, Jet Propulsion Lab. (United States)
Paul T. Finley, Ball Aerospace & Technologies Corp. (United States)


Published in SPIE Proceedings Vol. 5487:
Optical, Infrared, and Millimeter Space Telescopes
John C. Mather, Editor(s)

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