CaltechAUTHORS
Published July 26, 2016 | Version Published
Book Section - Chapter Open

Near-Infrared Wavefront Sensing

Creators

  • 1. ROR icon W.M. Keck Observatory
  • 2. ROR icon University of Hawaii at Manoa
  • 3. ROR icon California Institute of Technology
  • 4. ROR icon Arcetri Astrophysical Observatory
  • 5. ROR icon Laboratoire d'Astrophysique de Marseille
  • 6. ROR icon National Astronomical Observatory of Japan
  • 7. ROR icon Australian National University

Contributors

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.

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.

Attached Files

Published - 990915.pdf

Files

990915.pdf

Files (2.6 MB)

Name Size
md5:e19acecaacf0a3f07d8148f9d6c45920
2.6 MB Preview Download

Additional details

Identifiers

Eprint ID
72543
Resolver ID
CaltechAUTHORS:20161205-080523798

Funding

W. M. Keck Foundation
NSF
AST-1007058
Gordon and Betty Moore Foundation
4046

Dates

Created
2016-12-06
Created from EPrint's datestamp field
Updated
2021-11-11
Created from EPrint's last_modified field

Caltech Custom Metadata

Series Name
Proceedings of SPIE
Series Volume or Issue Number
9909