GriF: The New Three‐dimensional Spectroscopic Mode of PUEO, the Canada‐France‐Hawaii Telescope Adaptive Optics Bonnette: First Observations in the Fabry‐Pérot Scanning Mode

Three‐dimensional spectroscopy has the advantage of providing (quasi‐) simultaneously both spatial and spectral information. Coupled to adaptive optics, it conjugates spectroscopic power with high angular resolution. GriF offers these capabilities in the near‐infrared. As a new observing mode of KIR...

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Bibliographic Details
Published in:Publications of the Astronomical Society of the Pacific 2002-05, Vol.114 (795), p.563-576
Main Authors: Clénet, Y., Le Coarer, E., Joncas, G., Beuzit, J.‐L., Rouan, D., Chalabaev, A., Rabou, P., Arsenault, R., Delage, C., Marlot, C., Vallée, P., Grundseth, B., Thomas, J., Forveille, T., Lai, O., Lacombe, F.
Format: Article
Language:English
Subjects:
Adaptive optics
Astronomical objects
Astrophysics
Calibration
Cubes
Interferometers
Optical filters
Physics
Pixels
Spectral resolution
Telescopes
Wavelengths
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Summary:Three‐dimensional spectroscopy has the advantage of providing (quasi‐) simultaneously both spatial and spectral information. Coupled to adaptive optics, it conjugates spectroscopic power with high angular resolution. GriF offers these capabilities in the near‐infrared. As a new observing mode of KIR, the camera behind PUEO, the Canada‐France‐Hawaii Telescope adaptive optics bonnette, it provides images at the diffraction limit of the telescope in theKband. Spectroscopy at a resolution of 2000 is provided by a Fabry‐Pérot interferometer coupled with a grism, cooled to limit the background. This setup offers a large multiplex gain by observing simultaneously up to five monochromatic images. This article first describes the instrument and the calibration procedures. Next, we demonstrate GriF performances from its first observations, obtained on the Orion molecular cloud OMC‐1.
ISSN:0004-6280
1538-3873
DOI:10.1086/341674