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Near-Infrared Wavefront Sensing

Wizinowich, Peter and Chun, Mark and Mawet, Dimitri and Agapito, Guido and Dekany, Richard and Esposito, Simone and Fusco, Thierry and Guyon, Olivier and Hall, Donald and Plantet, Cedric and Rigaut, François (2016) Near-Infrared Wavefront Sensing. In: Adaptive Optics Systems V. Proceedings of SPIE. No.9909. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 990915. ISBN 978-1-5106-0198-7.

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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.

Item Type:Book Section
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URLURL TypeDescription
Wizinowich, Peter0000-0002-1646-442X
Mawet, Dimitri0000-0002-8895-4735
Guyon, Olivier0000-0002-1097-9908
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE). The W. M. Keck Observatory is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The Keck I near-IR tip-tilt sensor was supported by the National Science Foundation under Grant No. AST-1007058 and by the Gordon and Betty Moore Foundation under Grant No. 4046. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain.
Funding AgencyGrant Number
W. M. Keck FoundationUNSPECIFIED
Gordon and Betty Moore Foundation4046
Subject Keywords:adaptive optics, wavefront sensing, tip-tilt sensing, near infrared, pyramid, Keck, LIFT
Series Name:Proceedings of SPIE
Issue or Number:9909
Record Number:CaltechAUTHORS:20161205-080523798
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Official Citation:Peter Wizinowich ; Mark Chun ; Dimitri Mawet ; Guido Agapito ; Richard Dekany ; Simone Esposito ; Thierry Fusco ; Olivier Guyon ; Donald Hall ; Cedric Plantet ; Francois Rigaut; Near-infrared wavefront sensing. Proc. SPIE 9909, Adaptive Optics Systems V, 990915 (July 26, 2016); doi:10.1117/12.2233035.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72543
Deposited On:06 Dec 2016 20:52
Last Modified:11 Nov 2021 05:03

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