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Proceedings Paper

The VLTI fringe sensors: FINITO and PRIMA FSU
Author(s): Mario Gai; Serge Menardi; Stefano Cesare; Bertrand Bauvir; Donata Bonino; Leonardo Corcione; Martin Dimmler; Giuseppe Massone; Francois Reynaud; Anders Wallander
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Paper Abstract

FINITO is the first generation VLTI fringe sensor, optimised for three beam observations, recently installed at Paranal and currently used for VLTI optimisation. The PRIMA FSU is the second generation, optimised for astrometry in dual-feed mode, currently in construction. We discuss the constraints of fringe tracking at VLTI, the basic functions required for stabilised interferometric observations, and their different implementation in the two instruments, with remarks on the most critical technical aspects. We provide an estimate of the expected performance and describe some of their possible observing and calibration modes, with reference to the current scientific combiners.

Paper Details

Date Published: 20 October 2004
PDF: 12 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551495
Show Author Affiliations
Mario Gai, INAF, Osservatorio Astronomico di Torino (Italy)
Serge Menardi, European Southern Observatory (Germany)
Stefano Cesare, Alenia Spazio (Italy)
Bertrand Bauvir, European Southern Observatory (Germany)
Donata Bonino, INAF, Osservatorio Astronomico di Torino (Italy)
Leonardo Corcione, INAF, Osservatorio Astronomico di Torino (Italy)
Martin Dimmler, European Southern Observatory (Germany)
Giuseppe Massone, INAF, Osservatorio Astronomico di Torino (Italy)
Francois Reynaud, Institut de Recherche en Communications Optiques et Microondes, CNRS (France)
Anders Wallander, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 5491:
New Frontiers in Stellar Interferometry
Wesley A. Traub, Editor(s)

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