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Paper: Gaia Data Processing: Status, Architecture, First Results
Volume: 376, Astronomical Data Analysis Software and Systems XVI
Page: 293
Authors: Hernandez, J.; Hoar, J.; Lammers, U.; ter Linden, M.; O'Mullane, W.; Parsons, P.; Raison, F.; de Teodoro, P.
Abstract: Gaia is the European Space Agency's ambitious space astrometry mission with a main objective to astrometrically and spectro-photometrically map 109 celestial objects (mostly in our galaxy) with unprecedented accuracy. The satellite will downlink about 100 TB of raw telemetry data over 5 years. The achievement of its targeted astrometric accuracy of a few tenths of ╬╝as requires a very involved and intricate processing of the data. In addition to the main astrometric instrument, Gaia will feature a radial velocity instrument and two low-resolution dispersers for multi-color photometry. The data processing system will be developed over the coming years until the launch of Gaia in 2011 and then operated by the Gaia Data Processing and Analysis Consortium (DPAC). This body has recently been formed and will reply to ESA's forthcoming announcement of opportunity for conducting the Gaia data processing efforts. We report on the overall structure of the DPAC and show first results obtained with the current astrometric data reduction subsystem that is being developed at ESA's European Space Astronomy Centre (ESAC).
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