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Proceedings Paper

IRIS: an infrared tilt sensor for the VLTI
Author(s): Philippe B. Gitton; Samuel A. Leveque; Gerardo Avila; Thanh Phan Duc
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Paper Abstract

In the last two years the Very Large Telescope Interferometer (VLTI) has been operated with a wavefront controlled down to the Coude focus of each 8m Unit Telescope. From this focus, the stellar beam is passively relayed by more than 10 mirrors distributed along a 100m subterranean path before to be coherently superimposed in the VLTI laboratory. Experience has proven that the observation efficiency would be largely improved by controlling the tilt of the beam directly inside the VLTI laboratory. In this article, we present the justification and basic features of the InfraRed Image Sensor (IRIS) as well as its implementation within the already packed VLTI laboratory. The forthcoming milestones of the project are presented.

Paper Details

Date Published: 20 October 2004
PDF: 10 pages
Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004);
Show Author Affiliations
Philippe B. Gitton, European Southern Observatory (Germany)
Samuel A. Leveque, European Southern Observatory (Germany)
Gerardo Avila, European Southern Observatory (Germany)
Thanh Phan Duc, European Southern Observatory (Germany)

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

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