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Proceedings Paper

VLT Interferometer Data Flow System: from observation preparation to data processing
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Paper Abstract

In this article we present the Data Flow System (DFS) for the Very Large Telescope Interferometer (VLTI). The Data Flow System is the VLT end-to-end software system for handling astronomical observations from the initial observation proposal phase through the acquisition, processing and control of the astronomical data. The Data Flow system is now in the process of installation and adaptation for the VLT Interferometer. The DFS was first installed for VLTI first fringes utilising the siderostats together with the VINCI instrument and is constantly being upgraded in phase with the VLTI commissioning. When completed the VLT Interferometer will make it possible to coherently combine up to three beams coming from the four VLT 8.2m telescopes as well as from a set of initially three 1.8m Auxiliary Telescopes, using a Delay Line tunnel and four interferometry instruments. Observations of objects with some scientific interest are already being carried out in the framework of the VLTI commissioning using siderostats and the VLT Unit Telescopes, making it possible to test tools under realistic conditions. These tools comprise observation preparation, pipeline processing and further analysis systems. Work is in progress for the commissioning of other VLTI science instruments such as MIDI and AMBER. These are planned for the second half of 2002 and first half of 2003 respectively. The DFS will be especially useful for service observing. This is expected to be an important mode of observation for the VLTI, which is required to cope with numerous observation constraints and the need for observations spread over extended periods of time.

Paper Details

Date Published: 2 January 2002
PDF: 10 pages
Proc. SPIE 4844, Observatory Operations to Optimize Scientific Return III, (2 January 2002); doi: 10.1117/12.460619
Show Author Affiliations
Pascal Ballester, European Southern Observatory (United States)
Alberto Maurizio Chavan, European Southern Observatory (United States)
Andreas Glindemann, European Southern Observatory (United States)
Carlos Guirao, European Southern Observatory (Germany)
Walter Jaffe, Leiden Observatory (Netherlands)
Pierre Kervella, European Southern Observatory (United States)
Michele Peron, European Southern Observatory (United States)
Benoit Pirenne, European Southern Observatory (United States)
Peter J. Quinn, European Southern Observatory (United States)
Andrea Richichi, European Southern Observatory (United States)
Cyrus Sabet, European Southern Observatory (United States)
Markus Scholler, European Southern Observatory (United States)
Andreas J. Wicenec, European Southern Observatory (United States)
Rainer Wilhelm, European Southern Observatory (United States)
Bruce Wiseman, European Southern Observatory (United States)
Markus Wittkowski, European Southern Observatory (United States)
Stefano Zampieri, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 4844:
Observatory Operations to Optimize Scientific Return III
Peter J. Quinn, Editor(s)

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