On-orbit experience with the Spitzer far infrared detectors

E. T. Young, G. H. Rieke, M. Blaylock, J. Cadien, C. W. Engelbracht, K. D. Gordon, D. Kelly, K. Misselt, J. Morrison, J. Muzerolle, J. Stansberry, K. Y.L. Su, D. Fadda, D. Frayer, A. Noriega-Crespo, J. Rho

Research output: Contribution to journalConference articlepeer-review


The far-infrared detectors on the Multiband Imaging Photometer for Spitzer (MIPS) represent a significant advancement in both format and sensitivity. We describe some of the operational experience since launch in August 2003. MIPS has three infrared detector arrays, a 128×128 format Si:As impurity band conduction detector operating at 24 μm, a 32×32 format Ge:Ga array operating at 70 μm and a 2×20 format stressed Ge:Ga array operating at 160 μm. Since both germanium detectors utilize conventional bulk photoconductors, they are subject to a number of non-ideal behaviors that are inherent in these types of devices when operated in ultra-low backgrounds. The principal problems are nonlinear time response, changing responsivity in a radiation environment, and flux non-linearities. We describe observing strategies that are used on MIPS to minimize the impact of these effects.

Original languageEnglish (US)
Article number58830P
Pages (from-to)1-8
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventInfrared Spaceborne Remote Sensing 2005 - San Diego, CA, United States
Duration: Aug 3 2005Aug 4 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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