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Proceedings Paper

SITELLE: a wide-field imaging Fourier transform spectrometer for the Canada-France-Hawaii Telescope
Author(s): L. Drissen; A.-P. Bernier; L. Rousseau-Nepton; A. Alarie; C. Robert; G. Joncas; S. Thibault; F. Grandmont
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Paper Abstract

We describe the concept of a new instrument for the Canada-France-Hawaii telescope (CFHT), SITELLE (Spectromètre Imageur à Transformée de Fourier pour l'Etude en Long et en Large de raies d'Emission), as well as a science case and a technical study of its preliminary design. SITELLE will be an imaging Fourier transform spectrometer capable of obtaining the visible (350 nm - 950 nm) spectrum of every source of light in a field of view of 15 arcminutes, with 100% spatial coverage and a spectral resolution ranging from R = 1 (deep panchromatic image) to R = 104 (for gas dynamics). SITELLE will cover a field of view 100 to 1000 times larger than traditional integral field spectrographs, such as GMOS-IFU on Gemini or the future MUSE on the VLT. It is a legacy from BEAR, the first imaging FTS installed on the CFHT and the direct successor of SpIOMM, a similar instrument attached to the 1.6-m telescope of the Observatoire du Mont-Mégantic in Québec. SITELLE will be used to study the structure and kinematics of HII regions and ejecta around evolved stars in the Milky Way, emission-line stars in clusters, abundances in nearby gas-rich galaxies, and the star formation rate in distant galaxies.

Paper Details

Date Published: 15 July 2010
PDF: 10 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77350B (15 July 2010); doi: 10.1117/12.856470
Show Author Affiliations
L. Drissen, Univ. Laval (Canada)
A.-P. Bernier, Univ. Laval (Canada)
L. Rousseau-Nepton, Univ. Laval (Canada)
A. Alarie, Univ. Laval (Canada)
C. Robert, Univ. Laval (Canada)
G. Joncas, Univ. Laval (Canada)
S. Thibault, Univ. Laval (Canada)
F. Grandmont, ABB Inc. (Canada)


Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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