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Proceedings Paper

The global sphere reconstruction for the Gaia mission in the Astrometric Verification Unit
Author(s): Alberto Vecchiato; Ummi Abbas; Marilena Bandieramonte; Ugo Becciani; Luca Bianchi; Beatrice Bucciarelli; Deborah Busonero; Mario G. Lattanzi; Rosario Messineo
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Paper Abstract

The core task of the Gaia mission is the solution of the Global Astrometric Sphere, which is providing the materialization of the astrometric reference frame for the catalog that will be the main outcome of the mission. Given the absolute character of the measurements, the Gaia Data Processing and Analysis Consortium (DPAC) has decided to replicate a dedicated version of this task, together with two other ones selected for their mission criticality, in an Astrometric Verification Unit (AVU). This task, named Global Sphere Reconstruction (GSR), focusses on the importance of having an implementation of the astrometric sphere solution from a well-defined subset of objects, based on an independent astrometric model as well as on a different solution algorithm. We analyze here these two aspects in the context of the GSR implementation at the Data Processing Center of Torino (DPCT) and the solution to implement the most computationally intensive part of the pipeline as a High-Performance Computing module.

Paper Details

Date Published: 24 September 2012
PDF: 9 pages
Proc. SPIE 8451, Software and Cyberinfrastructure for Astronomy II, 84513C (24 September 2012); doi: 10.1117/12.926098
Show Author Affiliations
Alberto Vecchiato, INAF - Osservatorio Astrofisico di Torino (Italy)
Ummi Abbas, INAF - Osservatorio Astrofisico di Torino (Italy)
Marilena Bandieramonte, Univ. degli Studi di Catania (Italy)
INAF - Osservatorio Astrofisico di Catania (Italy)
Ugo Becciani, INAF - Osservatorio Astrofisico di Torino (Italy)
EURIX (Italy)
Luca Bianchi, INAF - Osservatorio Astrofisico di Torino (Italy)
EURIX (Italy)
Beatrice Bucciarelli, INAF - Osservatorio Astrofisico di Torino (Italy)
Deborah Busonero, INAF - Osservatorio Astrofisico di Torino (Italy)
Mario G. Lattanzi, INAF - Osservatorio Astrofisico di Torino (Italy)
Rosario Messineo, ALTEC S.p.A. (Italy)


Published in SPIE Proceedings Vol. 8451:
Software and Cyberinfrastructure for Astronomy II
Nicole M. Radziwill; Gianluca Chiozzi, Editor(s)

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