Other
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427...61c&link_type=abstract
The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 61
Other
6
Lws, Spectral Energy Distributions, Continuum Studies: Dust Models, Ic1396N, Iras16293-2422
Scientific paper
We have studied the behavior of the LW ISOCAM detector for the short term transient and applied the Fouks-Schubert model developed for PHT-S, the spectrometer in ISOPHOT. For uniform illumination, this model describes upward and downward steps of flux with an accuracy better than 1%. For each pixel of the detector, two parameters are used. We have computed their values for the 32x32 pixels of the camera. No evolution is visible during the mission. On the other hand, spatial variations from pixel to pixel are significant. We present an inversion method of the Fouks-Schubert model. Without any fitting and for uniform illumination, data are corrected with a photometric accuracy of ~ 1%. The accuracy of the previous methods was not better than ~ 10% (for instance with the old IAS model used up to now to process most of the data). This approach may be used for others ISO detectors. We are currently working on point sources and the problem of long term drift.
Abergel Alain
Coulais Alain
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