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Operating SIRTF for maximum lifetime

Show simple item record Lawrence, C. R. en_US 2004-09-17T18:13:17Z 2004-09-17T18:13:17Z 2002-08-24 en_US
dc.identifier.citation IR Space Telescopes and Instruments en_US
dc.identifier.citation Waikoloa, HI, USA en_US
dc.identifier.clearanceno 02-2188 en_US
dc.description.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 longer wavelengths. By taking advantage of this, it may be possible to extend the helium and mission lifetime by 10% or even 20%. en_US
dc.format.extent 3088672 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.subject.other cryogenics infrared telescopes en_US
dc.title Operating SIRTF for maximum lifetime en_US

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