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Proceedings Article

VASAO: visible all sky adaptive optics: a new adaptive optics concept for CFHT

[+] Author Affiliations
Olivier Lai, Christian Veillet, Derrick Salmon, Kevin Ho, Marc R. Baril, Gregory A. Barrick, Jim Thomas, Douglas Teeple, Tom Benedict

Canada-France-Hawaii Telescope (USA)

Jean Paul Pique, Hugues Guillet de Chatellus

Univ. Joseph Fourier (France)

Proc. SPIE 7015, Adaptive Optics Systems, 701543 (July 14, 2008); doi:10.1117/12.789666
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From Conference Volume 7015

  • Adaptive Optics Systems
  • Norbert Hubin; Claire E. Max; Peter L. Wizinowich
  • Marseille, France | June 23, 2008

abstract

VASAO is an ambitious project that explores new conceptual direction in the field of astronomical adaptive optics. In the era of 8 meter and larger telescopes, and their instrument costs and telescope time pressure, there is a natural niche for such ground-breaking conceptual development in the 4 meter class telescope. The aim of VASAO is to provide diffraction limited imaging in the visible with 100% sky coverage; the challenge (but potential rewards) arises from the simultaneity of these requirements. To this end, CFHT is conducting a feasibility study based on the polychromatic guide star concept (Foy et al., 1995 [4]) coupled with a high order curvature AO system, presented in this paper. A number of experiments have been started (or carried out) to study the challenges and limits of the techniques involved in an operational setting; these include the FlyEyes detector, and a polychromatic tip-tilt test on natural stars. Because such a project straddles such a fine line between facility instrument and experimental facility, careful thought has to be given to the balance between modes of operations and potential astrophysical targets.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Olivier Lai ; Christian Veillet ; Derrick Salmon ; Kevin Ho ; Marc R. Baril, et al.
"VASAO: visible all sky adaptive optics: a new adaptive optics concept for CFHT", Proc. SPIE 7015, Adaptive Optics Systems, 701543 (July 14, 2008); doi:10.1117/12.789666; http://dx.doi.org/10.1117/12.789666


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