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Proceedings Paper

Final design of VISIR: the mid-infrared imager and spectrometer for the VLT
Author(s): Pierre-Olivier Lagage; Gilles A. Durand; Charles Lyraud; Yvon Rio; Jan-Willem Pel; Johannes C.M. de Haas
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Paper Abstract

In this paper, we present the status of VISIR, the mid-IR instrument to be installed in 2001 at the Cassegrain focus of YEPUN, the telescope unit number 4 of the European Very Large Telescope program. This cryogenic instrument, optimized for both mid-IR atmospheric windows, combines imaging capabilities over a field up to about 1 arcmin at the diffraction limit of the telescope, and long-slit grating spectroscopy capabilities with various spectral resolution up to 25000 at 10 micrometers at 20 micrometers . The contrast to design and build VISIR was signed in November 1996 between the European Southern Observatory and French-Dutch consortium of institutes led by Service d'Astrophysique of Commissariat a l'Energie Atomique. A key step in the project has been passed in 1999: the final design review. The instrument is now in the manufacture phase. Several subsystems have already been built and tested. The integration of the whole instrument is scheduled to start in December 2000.

Paper Details

Date Published: 16 August 2000
PDF: 12 pages
Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); doi: 10.1117/12.395431
Show Author Affiliations
Pierre-Olivier Lagage, CEA Saclay (France)
Gilles A. Durand, CEA Saclay (France)
Charles Lyraud, CEA Saclay (France)
Yvon Rio, CEA Saclay (France)
Jan-Willem Pel, Netherlands Foundation for Research in Astronomy (Netherlands)
Johannes C.M. de Haas, Netherlands Foundation for Research in Astronomy (Netherlands)

Published in SPIE Proceedings Vol. 4008:
Optical and IR Telescope Instrumentation and Detectors
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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