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Proceedings Paper

A status update of the VLTI control system
Author(s): Anders Wallander; Bertrand Bauvir; Martin Dimmler; Rob Donaldson; Enrico Fedrigo; Bruno Gilli; Nico Housen; Alexis Huxley; Thanh Phan Duc
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Paper Abstract

In the last two years the Very Large Telescope Interferometer (VLTI) has, on one hand grown with the addition of new subsystems, on the other hand matured with experience from commissioning and operation. Two adaptive optics systems for the 8-m unit telescopes have been fully integrated in the VLTI infrastructure. The first scientific instrument, MIDI, has been commissioned and is now being offered to the community. A second scientific instrument AMBER is currently being commissioned. The performance of the interferometer is being enhanced by the installation of a dedicated fringe sensor, FINITO, and a tip-tilt sensor in the interferometric laboratory, IRIS, and the associated control loops. Four relocatable auxiliary 1.8 m telescopes and three additional delay lines are being added to the infrastructure. At the same time the design and development of the dual feed PRIMA facility, which will have major impact on the existing control system, is in full swing. In this paper we review the current status of the VLTI control system and assess the impact on complexity and reliability caused by this explosion in size. We describe the applied methods and technologies to maximize the performance and reliability in order to keep VLTI and its control system a competitive, reliable and productive facility.

Paper Details

Date Published: 15 September 2004
PDF: 11 pages
Proc. SPIE 5496, Advanced Software, Control, and Communication Systems for Astronomy, (15 September 2004); doi: 10.1117/12.550923
Show Author Affiliations
Anders Wallander, European Southern Observatory (Germany)
Bertrand Bauvir, European Southern Observatory (Chile)
Martin Dimmler, European Southern Observatory (Germany)
Rob Donaldson, European Southern Observatory (Germany)
Enrico Fedrigo, European Southern Observatory (Germany)
Bruno Gilli, European Southern Observatory (Germany)
Nico Housen, European Southern Observatory (Chile)
Alexis Huxley, European Southern Observatory (Germany)
Thanh Phan Duc, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 5496:
Advanced Software, Control, and Communication Systems for Astronomy
Hilton Lewis; Gianni Raffi, Editor(s)

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