CaltechAUTHORS
Published March 5, 2003 | Version Published
Book Section - Chapter Open

Operating SIRTF for maximum lifetime

Creators

  • 1. ROR icon Jet Propulsion Lab
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon Ames Research Center

Contributors

Abstract

The instruments of the Space Infrared Telescope Facility (SIRTF) 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 shorter wavelengths. By taking advantage of this, it may be possible to extend the helium and mission lifetime by 10% or even 20%.

Additional Information

© 2003 Society of Photo-optical Instrumentation Engineers (SPIE).

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Identifiers

Eprint ID
92273
Resolver ID
CaltechAUTHORS:20190115-084104903

Dates

Created
2019-01-15
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Updated
2021-11-16
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Caltech Custom Metadata

Caltech groups
Infrared Processing and Analysis Center (IPAC)
Series Name
Proceedings of SPIE
Series Volume or Issue Number
4850