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Three looks at Gaia data volumes

Published online by Cambridge University Press:  15 February 2011

C. Turon ,
F. Meynadier ,
F. Arenou ,
F. Mignard  and
U. Lammers
F. Mignard
Affiliation:
Univ. Nice Sophia-Antipolis, CNRS, OCA, Le Mont Gros, BP. 4229, 06304, Nice, France
U. Lammers
Affiliation:
ESA/ESAC, PO Box 78, 28691 Villanueva de la Cañada, Madrid, Spain
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Abstract

In this paper we discuss a few aspects of the data volume to be generated by the ESA space astrometry mission Gaia. This volume is assessed first from the on-board point of view in the form of the instantaneous number of sources in the combined astrometric fields of view as a function of time. Then one focuses on the data flow for the data processing itself measured by the number of objects entering the pipeline every day. Finally the combination of the on-board acquisition scheme with the number of stars per day gives the actual telemetry volume to be transferred to the ground and its variation during the mission.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 45: GAIA: At the Frontiers of Astrometry , 2010 , pp. 97 - 102
Copyright
© EAS, EDP Sciences 2011

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References

Références

Mignard, F., 2010, J. Adv. Space Res., doi:10.1016/j.asr.2010.05.020
Lindegren, L., 2010, Proc. of IAU Symp., 261, 296