The NICMOS Cooling System: Technology in the Service of Science

Details The NICMOS Cooling System: Technology in the Service of Science The NICMOS Cooling System: Technology in the Service of Science

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.9005c&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #90.05; Bulletin of the American Astronomical Society, Vol. 34, p.953

Astronomy and Astrophysics

Astronomy

Scientific paper

Over the past 4 years, the Hubble Space Telescope Project has been developing an experimental mechanical cryocooler for the observatory, with the goal of providing continuous cooling for the NICMOS detectors. The effort has been a success, and has resulted in the launch and deployment of this remarkable new technology during Servicing Mission 3B (March 2002). Since then, the NICMOS Cooling System has been activated, is operating within expected parameters, and has achieved the desired cooling of the NICMOS detectors. The NICMOS detectors are now being operated at about 77 K, a full 15 K higher temperature than during 1997-1999 (when the instrument was passively cooled by solid nitrogen). The higher temperature results in higher quantum efficiency, by about 40%, of the instrument. The NCS+NICMOS has fully restored the only infrared capability on HST. We report on the status of these developments.

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