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Proceedings Paper

GBOT: ground based optical tracking of the Gaia satellite
Author(s): Martin Altmann; Sebastien Bouquillon; Francois Taris; Iain A. Steele; Ricky L. Smart; Alexandre H. Andrei; Christophe Barache; Teddy Carlucci; Sebastian G. Els
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Paper Abstract

Gaia, the 1 billion star, high precision, astrometric satellite will revolutionise our understanding in many areas of astronomy ranging from bodies in our Solar System to the formation and structure of our Galaxy. To fully achieve the ambitious goals of the mission, and to completely eliminate effects such as aberration, we must know the position and velocity vectors of the spacecraft as it orbits the Lagrange point to an accuracy greater than can be obtained by traditional radar techniques, leading to the decision to conduct astrometric observations of the Gaia satellite itself from the ground. Therefore the Ground Based Optical Tracking (GBOT) project was formed and a small worldwide network using 1-2 m telescopes established in order to obtain one measurement per day of a precision/accuracy of 20 mas. We will discuss all aspects of GBOT, setup, feasibility considerations, preliminary tests of observing methods, partner observatories, the pipeline/database (see also contribution by Bouquillon et al.1).

Paper Details

Date Published: 7 August 2014
PDF: 15 pages
Proc. SPIE 9149, Observatory Operations: Strategies, Processes, and Systems V, 91490P (7 August 2014); doi: 10.1117/12.2056571
Show Author Affiliations
Martin Altmann, Univ. Heidelberg (Germany)
SYRTE, Observatoire de Paris (France)
Sebastien Bouquillon, SYRTE, Observatoire de Paris (France)
Francois Taris, SYRTE, Observatoire de Paris (France)
Iain A. Steele, Liverpool John Moores Univ. (United Kingdom)
Ricky L. Smart, INAF - Osservatorio Astronomico di Torino (Italy)
Alexandre H. Andrei, SYRTE, Observatoire de Paris (France)
INAF - Osservatorio Astronomico di Torino (Italy)
Observatório Nacional (Brazil), and Observatorio de Valango (Brazil)
Christophe Barache, SYRTE, Observatoire de Paris (France)
Teddy Carlucci, SYRTE, Observatoire de Paris (France)
Sebastian G. Els, Univ. Heidelberg (Germany)
European Space Astronomy Ctr. (Spain)

Published in SPIE Proceedings Vol. 9149:
Observatory Operations: Strategies, Processes, and Systems V
Alison B. Peck; Chris R. Benn; Robert L. Seaman, Editor(s)

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