1. 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
- Author
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C. Marlot, Francois Lacombe, J. L. Beuzit, A. Chalabaev, B. Grundseth, E. Le Coarer, T. Forveille, Philippe Vallée, James D. Thomas, Robin Arsenault, Daniel Rouan, Olivier Lai, Gilles Joncas, C. Delage, Patrick Rabou, and Y. Clénet
- Subjects
Physics ,biology ,business.industry ,Astrophysics::Instrumentation and Methods for Astrophysics ,Astronomy and Astrophysics ,Astrophysics::Cosmology and Extragalactic Astrophysics ,biology.organism_classification ,law.invention ,Grism ,Telescope ,Interferometry ,Optics ,Space and Planetary Science ,law ,K band ,Angular resolution ,Pueo ,Adaptive optics ,business ,Astrophysics::Galaxy Astrophysics ,Fabry–Pérot interferometer ,Remote sensing - Abstract
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 the K band. Spectroscopy at a resolution of 2000 is provided by a Fabry‐Perot 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.
- Published
- 2002