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Status of point spread function determination for Keck adaptive optics
Author(s): S. Ragland; T. J. Dupuy; L. Jolissaint; P. L. Wizinowich; J. R. Lu; M. A. van Dam; G. B. Berriman; W. Best; C. R. Gelino; A. M. Ghez; M. C. Liu; J. A. Mader; A. Vayner; G. Witzel; S. A. Wright
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Paper Abstract

The progress achieved in implementing Point Spread Function reconstruction (PSF-R) capability at W. M. Keck Observatory (WMKO) is discussed. Observations of low-mass binary systems have been used to evaluate the improvements in astrometry and photometry using reconstructed PSFs. The on-sky performance of PSF-R is discussed by comparing the binary-fitting analysis using the reconstructed PSFs with the standard methods. We show that the PSFR in the NGS provides comparable performance to having a close reference star in the imaging science instrument. The on-sky troubleshooting efforts and the recent PSF-R technical developments are also presented. We find that the PSF-R reconstruction is more of a systems science problem that a post-processing problem. We close by discussing the lessons learned in the context of existing and future extremely large telescopes.

Paper Details

Date Published: 10 July 2018
PDF: 13 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 107031J (10 July 2018); doi: 10.1117/12.2312975
Show Author Affiliations
S. Ragland, W. M. Keck Observatory (United States)
T. J. Dupuy, Gemini Observatory (United States)
L. Jolissaint, Univ. of Applied Sciences Western Switzerland (Switzerland)
P. L. Wizinowich, W. M. Keck Observatory (United States)
J. R. Lu, Univ. of California, Berkeley (United States)
M. A. van Dam, Flat Wavefronts (New Zealand)
G. B. Berriman, NASA Exoplanet Science Institute (United States)
W. Best, Univ. of California, Los Angeles (United States)
C. R. Gelino, NASA Exoplanet Science Institute (United States)
A. M. Ghez, Univ. of California, Los Angeles (United States)
M. C. Liu, Univ. of Hawai'i (United States)
J. A. Mader, W. M. Keck Observatory (United States)
A. Vayner, Univ. of California, San Diego (United States)
G. Witzel, Univ. of California, Los Angeles (United States)
S. A. Wright, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

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