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Proceedings Paper

FALCON: a new-generation spectrograph with adaptive optics for the ESO VLT
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Paper Abstract

We present FALCON, a concept of new generation multi-objects integral field spectrograph with adaptive optics for the ESO VLT. The goal of FALCON is to combine high angular resolution (0.15 - 0.25 arcsec) and high spectral resolution (R≥5000) in the 0.8-1.8 μm wavelength range across the Nasmyth field (25 arcmin). Instead of compensating the whole field, the correction will be performed locally on each scientific object. This implies to use small miniaturized devices for adaptive optics correction and wavefront sensing. The main scientific objective of FALCON will be extragalactic astronomy. It will therefore have to use atmospheric tomography because the stars required for wavefront sensing will be in most of the cases far outside the isoplanatic patch. We show in this paper that applying adaptive optics correction will provide an important increase in signal to noise ratio, especially for distant galaxies at high redshift.

Paper Details

Date Published: 6 February 2004
PDF: 12 pages
Proc. SPIE 5237, Optics in Atmospheric Propagation and Adaptive Systems VI, (6 February 2004); doi: 10.1117/12.514034
Show Author Affiliations
Francois Assemat, Observatoire de Paris-Meudon (France)
Francois Hammer, Observatoire de Paris-Meudon (France)
Eric Gendron, Observatoire de Paris-Meudon (France)
Frederic Sayede, Observatoire de Paris-Meudon (France)
Philippe Laporte, Observatoire de Paris-Meudon (France)
Michel Marteaud, Observatoire de Paris-Meudon (France)
Mathieu Puech, Observatoire de Paris-Meudon (France)
Jean-Marc Conan, ONERA (France)
Thierry Fusco, ONERA (France)
A. Liotard, Lab. d'Astrophysique de Marseille (France)
Frederic Zamkotskian, Lab. d'Astrophysique de Marseille (France)

Published in SPIE Proceedings Vol. 5237:
Optics in Atmospheric Propagation and Adaptive Systems VI
John D. Gonglewski; Karin Stein, Editor(s)

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