Near-infrared wavefront sensing

Peter Wizinowich; Mark Chun; Dimitri Mawet; Guido Agapito; Richard Dekany; Simone Esposito; Thierry Fusco; Olivier Guyon; Donald Hall; Cedric Plantet; Francois Rigaut

doi:10.1117/12.2233035

26 July 2016 Near-infrared wavefront sensing

Peter Wizinowich, Mark Chun, Dimitri Mawet, Guido Agapito, Richard Dekany, Simone Esposito, Thierry Fusco, Olivier Guyon, Donald Hall, Cedric Plantet, Francois Rigaut

Author Affiliations +

Proceedings Volume 9909, Adaptive Optics Systems V; 990915 (2016) https://doi.org/10.1117/12.2233035
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

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Peter Wizinowich, Mark Chun, Dimitri Mawet, Guido Agapito, Richard Dekany, Simone Esposito, Thierry Fusco, Olivier Guyon, Donald Hall, Cedric Plantet, and Francois Rigaut "Near-infrared wavefront sensing", Proc. SPIE 9909, Adaptive Optics Systems V, 990915 (26 July 2016); https://doi.org/10.1117/12.2233035

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