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Proceedings Paper

The GAIA photometric data processing
Author(s): Giorgia Busso; Francesca De Angeli; Paolo Montegriffo
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Paper Abstract

Gaia is an ESA mission which will measure the positions, distances, space motions, and many physical characteristics for one billion stars in our Galaxy and beyond. The satellite will have three instruments on board: the Astrometric Field for the astrometry; the Blue and Red Photometers for the low-resolution spectroscopy and the Radial Velocity Spectrometer which will allow measuring radial velocities. This paper will give an overview of the processing of the dispersed images for BP and RP: the data will be corrected for CCD related effects in the pre-processing, where also the sky background and the flux contamination from neighbouring sources will be removed; the data will be then internally calibrated to the same "mean instrument" and externally calibrated to obtain spectrum and flux in physical units, which will be stored in the final catalogue.

Paper Details

Date Published: 21 September 2012
PDF: 9 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844242 (21 September 2012); doi: 10.1117/12.925911
Show Author Affiliations
Giorgia Busso, Leiden Observatory, Leiden Univ. (Netherlands)
Francesca De Angeli, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Paolo Montegriffo, INAF - Osservatorio Astronomico di Bologna (Italy)


Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann, Editor(s)

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