Comparison of the isophot and COBE/DIRBE absolute photometry in the low surface brightness regions

P. Héraudeau, P. Ábrahám, C. Del Burgo, U. Klaas, C. Kiss

Research output: Conference contribution

Abstract

The DIRBE database is the most extensively used reference for absolute sky surface brightness in the infrared. We performed a thorough analysis of the ISOPHOT surface brightness calibration using a large number of observations. We have built up a large data base of suitable fields where an ISOPHOT vs. DIRBE comparison can be performed. This includes all large rasters of low surface brightness, absolute photometry observations and minimaps in the ISO archive. We use this database for a systematic comparison of the ISOPHOT and COBE/DIRBE surface brightness calibration for all filters and all detectors of the ISOPHOT instrument. We describe the steps of the comparison: a) retrieve DIRBE values for each ISOPHOT observation, b) interpolate DIRBE values at the proper wavelength; c) colour correct the data and d) take into account the smaller beam size of ISOPHOT using the ISSA maps. Finally we present our preliminary results with PIA V7 for all filters as transformations between the 2 photometric systems.

Original languageEnglish
Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
Pages361-364
Number of pages4
Edition481
Publication statusPublished - máj. 2003
EventThe Calibration Legacy of the ISO Mission - madrid, Spain
Duration: febr. 5 2001febr. 9 2001

Other

OtherThe Calibration Legacy of the ISO Mission
CountrySpain
Citymadrid
Period2/5/012/9/01

Fingerprint

Photometry
Luminance
Calibration
Color
Infrared radiation
Detectors
Wavelength

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Héraudeau, P., Ábrahám, P., Del Burgo, C., Klaas, U., & Kiss, C. (2003). Comparison of the isophot and COBE/DIRBE absolute photometry in the low surface brightness regions. In European Space Agency, (Special Publication) ESA SP (481 ed., pp. 361-364)

Comparison of the isophot and COBE/DIRBE absolute photometry in the low surface brightness regions. / Héraudeau, P.; Ábrahám, P.; Del Burgo, C.; Klaas, U.; Kiss, C.

European Space Agency, (Special Publication) ESA SP. 481. ed. 2003. p. 361-364.

Research output: Conference contribution

Héraudeau, P, Ábrahám, P, Del Burgo, C, Klaas, U & Kiss, C 2003, Comparison of the isophot and COBE/DIRBE absolute photometry in the low surface brightness regions. in European Space Agency, (Special Publication) ESA SP. 481 edn, pp. 361-364, The Calibration Legacy of the ISO Mission, madrid, Spain, 2/5/01.
Héraudeau P, Ábrahám P, Del Burgo C, Klaas U, Kiss C. Comparison of the isophot and COBE/DIRBE absolute photometry in the low surface brightness regions. In European Space Agency, (Special Publication) ESA SP. 481 ed. 2003. p. 361-364
Héraudeau, P. ; Ábrahám, P. ; Del Burgo, C. ; Klaas, U. ; Kiss, C. / Comparison of the isophot and COBE/DIRBE absolute photometry in the low surface brightness regions. European Space Agency, (Special Publication) ESA SP. 481. ed. 2003. pp. 361-364
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