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Proceedings Paper

The VLTI Auxiliary Telescopes: commissioning of AT1
Author(s): Bertrand Koehler; Max Kraus; Jean-Michel Moresmau; Krister Wirenstrand; Michel Duchateau; Philippe Duhoux; Robert Karban; Carlo Flebus; E. Gabriel; Olivier Pirnay
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Paper Abstract

The Very Large Telescope Interferometer (VLTI) that currently combines the four VLT 8.2-m Unit Telescopes (UTs) is now being equipped with its dedicated array of Auxiliary Telescopes (ATs). This array includes four 1.8-m telescopes which can be relocated on thirty observing stations distributed on the top of the Paranal Observatory. This array, albeit less sensitive than the array of UTs, is a key element for the scientific operation of the VLTI. After more than five years of design, development, manufacturing and extensive testing in Europe by the company AMOS (Belgium), the first AT arrived on Paranal in October 2003 where it was re-assembled in two months. This was followed by the final testing on the sky, the so-called 'commissioning', that took place in January and February 2004. This paper describes the recent activities from the delivery of AT1 in Europe up to its commissioning at Paranal. It presents a few results from the commissioning and reports the achieved performance. The status of the other ATs is also briefly described.

Paper Details

Date Published: 20 October 2004
PDF: 11 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551210
Show Author Affiliations
Bertrand Koehler, European Southern Observatory (Germany)
Max Kraus, European Southern Observatory (Germany)
Jean-Michel Moresmau, European Southern Observatory (Germany)
Krister Wirenstrand, European Southern Observatory (Germany)
Michel Duchateau, European Southern Observatory (Germany)
Philippe Duhoux, European Southern Observatory (Germany)
Robert Karban, European Southern Observatory (Germany)
Carlo Flebus, Advanced Mechanical and Optical Systems (Belgium)
E. Gabriel, Advanced Mechanical and Optical Systems (Belgium)
Olivier Pirnay, Advanced Mechanical and Optical Systems (Belgium)

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

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