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Proceedings Paper

W. M. Keck Observatory's next-generation adaptive optics facility
Author(s): P. Wizinowich; S. Adkins; R. Dekany; D. Gavel; C. Max; R. Bartos; J. Bell; A. Bouchez; J. Chin; A. Conrad; A. Delacroix; E. Johansson; R. Kupke; C. Lockwood; J. Lyke; F. Marchis; E. McGrath; D. Medeiros; M. Morris; D. Morrison; C. Neyman; S. Panteleev; M. Pollard; M. Reinig; T. Stalcup; S. Thomas; M. Troy; K. Tsubota; V. Velur; K. Wallace; E. Wetherell
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Paper Abstract

We report on the preliminary design of W.M. Keck Observatory's (WMKO's) next-generation adaptive optics (NGAO) facility. This facility is designed to address key science questions including understanding the formation and evolution of today's galaxies, measuring dark matter in our galaxy and beyond, testing the theory of general relativity in the Galactic Center, understanding the formation of planetary systems around nearby stars, and exploring the origins of our own solar system. The requirements derived from these science questions have resulted in NGAO being designed to have near diffraction-limited performance in the near-IR (K-Strehl ~ 80%) over narrow fields (< 30" diameter) with modest correction down to ~ 700 nm, high sky coverage, improved sensitivity and contrast and improved photometric and astrometric accuracy. The resultant key design features include multi-laser tomography to measure the wavefront and correct for the cone effect, open loop AO-corrected near-IR tip-tilt sensors with MEMS deformable mirrors (DMs) for high sky coverage, a high order MEMS DM for the correction of atmospheric and telescope static errors to support high Strehls and high contrast companion sensitivity, point spread function (PSF) calibration to benefit quantitative astronomy, a cooled science path to reduce thermal background, and a high-efficiency science instrument providing imaging and integral field spectroscopy.

Paper Details

Date Published: 27 July 2010
PDF: 12 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77360K (27 July 2010); doi: 10.1117/12.857628
Show Author Affiliations
P. Wizinowich, W. M. Keck Observatory (United States)
S. Adkins, W. M. Keck Observatory (United States)
R. Dekany, Caltech Optical Observatories (United States)
D. Gavel, Univ. of California Observatories (United States)
C. Max, Univ. of California Observatories (United States)
R. Bartos, Jet Propulsion Lab. (United States)
J. Bell, W. M. Keck Observatory (United States)
A. Bouchez, Caltech Optical Observatories (United States)
J. Chin, W. M. Keck Observatory (United States)
A. Conrad, W. M. Keck Observatory (United States)
A. Delacroix, Caltech Optical Observatories (United States)
E. Johansson, W. M. Keck Observatory (United States)
R. Kupke, Univ. of California Observatories (United States)
C. Lockwood, Univ. of California Observatories (United States)
J. Lyke, W. M. Keck Observatory (United States)
F. Marchis, Univ. of California, Berkeley (United States)
E. McGrath, Univ. of California Observatories (United States)
D. Medeiros, W. M. Keck Observatory (United States)
M. Morris, Univ. of California, Los Angeles (United States)
D. Morrison, W. M. Keck Observatory (United States)
C. Neyman, W. M. Keck Observatory (United States)
S. Panteleev, W. M. Keck Observatory (United States)
M. Pollard, W. M. Keck Observatory (United States)
M. Reinig, Univ. of California Observatories (United States)
T. Stalcup, W. M. Keck Observatory (United States)
S. Thomas, Univ. of California Observatories (United States)
M. Troy, Jet Propulsion Lab. (United States)
K. Tsubota, W. M. Keck Observatory (United States)
V. Velur, Caltech Optical Observatories (United States)
K. Wallace, Jet Propulsion Lab. (United States)
E. Wetherell, W. M. Keck Observatory (United States)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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