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Paper Abstract

We discuss the advantages of wavefront sensing at near-infrared (IR) wavelengths with low-noise detector technologies that have recently become available. In this paper, we consider low order sensing with laser guide star (LGS) adaptive optics (AO) and high order sensing with natural guide star (NGS) AO. We then turn to the application of near-IR sensing with the W. M. Keck Observatory (WMKO) AO systems for science and as a demonstrator for similar systems on extremely large telescopes (ELTs). These demonstrations are based upon an LGS AO near-IR tip-tilt-focus sensor and our collaboration to implement a near-IR pyramid wavefront sensor (PWFS) for a NGS AO L-band coronagraphic imaging survey to identify exoplanet candidates.

Paper Details

Date Published: 26 July 2016
PDF: 13 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 990915 (26 July 2016); doi: 10.1117/12.2233035
Show Author Affiliations
Peter Wizinowich, W. M. Keck Observatory (United States)
Mark Chun, Univ. of Hawaii (United States)
Dimitri Mawet, California Institute of Technology (United States)
Guido Agapito, Arcetri Astrophysical Observatory (Italy)
Richard Dekany, California Institute of Technology (United States)
Simone Esposito, Arcetri Astrophysical Observatory (Italy)
Thierry Fusco, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
ONERA (France)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Donald Hall, Univ. of Hawaii (United States)
Cedric Plantet, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Univ. Grenoble Alpes, CNRS, IPAG (France)
Francois Rigaut, Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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