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Proceedings Paper

GI2T/REGAIN control system and data reduction package
Author(s): Denis Mourard; Jean Michel Clausse; Ettore Pedretti; Monique Pierron; Robert Dalla; Michel Dugue; Laurent Koechlin; Guy Merlin; Nathalie D. Thureau
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Paper Abstract

We present the general architecture of the GI2T/REGAIN control system. Based on a Graphical User Interface and different client-server communications, the system has to control both telescopes, the delay line, the beam-combiner, the data acquisition system and the real-time processing used as fringe tracker. We also describe in details the implementation of a real-time fringe tracker based on 4 monochromatic images and which used the fractional excess algorithm. Numerical simulations are shown. The control system is also dedicated to the acquisition of all the relevant data for the visibility calibration. We will also describe in details the data reduction package that provides the corrected visibilities. This architecture is very general and robust and has been developed having in mind that GI2T/REGAIN should be used by a wide community of astronomers.

Paper Details

Date Published: 5 July 2000
PDF: 10 pages
Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); doi: 10.1117/12.390251
Show Author Affiliations
Denis Mourard, Observatoire de la Cote d'Azur (France)
Jean Michel Clausse, Univ. de Nice Sophia-Antipolis (France)
Ettore Pedretti, Observatoire de Haute Provence (United States)
Monique Pierron, Observatoire de la Cote d'Azur (France)
Robert Dalla, Observatoire de la Cote d'Azur (France)
Michel Dugue, Observatoire de la Cote d'Azur (France)
Laurent Koechlin, Observatoire Midi-Pyrenees (France)
Guy Merlin, Observatoire de la Cote d'Azur (France)
Nathalie D. Thureau, Observatoire de la Cote d'Azur (United Kingdom)

Published in SPIE Proceedings Vol. 4006:
Interferometry in Optical Astronomy
Pierre J. Lena; Andreas Quirrenbach, Editor(s)

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