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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 ESAspace astrometry mission Gaia. This volume is assessed first from the on-board point ofview in the form of the instantaneous number of sources in the combined astrometric fieldsof view as a function of time. Then one focuses on the data flow for the data processingitself measured by the number of objects entering the pipeline every day. Finally thecombination of the on-board acquisition scheme with the number of stars per day gives theactual telemetry volume to be transferred to the ground and its variation during themission.

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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