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Proceedings Paper

Enabling Gaia observations of naked-eye stars
Author(s): J. Martín-Fleitas; J. Sahlmann; A. Mora; R. Kohley; B. Massart; J. L'Hermitte; M. Le Roy; P. Paulet
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Paper Abstract

The ESA Gaia space astrometry mission will perform an all-sky survey of stellar objects complete in the nominal magnitude range G = [6.0 - 20.0]. The stars with G < 6.0, i.e. those visible to the unaided human eye, would thus not be observed by Gaia. We present an algorithm configuration for the Gaia on-board autonomous object observation system that makes it possible to observe very bright stars with G = [2.0-6.0). Its performance has been tested during the in-orbit commissioning phase achieving an observation completeness of ~ 94% at G = 3 – 5.7 and ~ 75% at G = 2 – 3. Furthermore, two targeted observation techniques for data acquisition of stars brighter than G=2.0 were tested. The capabilities of these two techniques and the results of the in-flight tests are presented. Although the astrometric performance for stars with G < 6.0 has yet to be established, it is clear that several science cases will benefit from the results of the work presented here.

Paper Details

Date Published: 2 August 2014
PDF: 12 pages
Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91430Y (2 August 2014); doi: 10.1117/12.2056325
Show Author Affiliations
J. Martín-Fleitas, European Space Astronomy Ctr. (Spain)
Aurora Technology B.V. (Netherlands)
J. Sahlmann, European Space Astronomy Ctr. (Spain)
A. Mora, European Space Astronomy Ctr. (Spain)
Aurora Technology B.V. (Netherlands)
R. Kohley, European Space Astronomy Ctr. (Spain)
B. Massart, Airbus Defence and Space (France)
J. L'Hermitte, Airbus Defence and Space (France)
M. Le Roy, Airbus Defence and Space (France)
P. Paulet, Airbus Defence and Space (France)

Published in SPIE Proceedings Vol. 9143:
Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann Jr.; Mark Clampin; Giovanni G. Fazio; Howard A. MacEwen, Editor(s)

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