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Proceedings Paper

Laser guide star adaptive optics point spread function reconstruction project at W. M. Keck Observatory: preliminary on-sky results
Author(s): Laurent Jolissaint; Sam Ragland; Peter Wizinowich; Audrey Bouxin
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Paper Abstract

We present in this paper an analysis of our preliminary results for point spread function reconstruction in laser guide star (LGS) mode for the Keck-II adaptive optics system. Our approach is based on an update of the natural guide star algorithm with the LGS terms. The first reconstruction we have done is based on a set of 13 LGS runs (telemetry data and sky PSF) for which we demonstrate already a significant correlation between the reconstructed and sky PSF metrics. At this point of the project, though, our reconstructed PSF does not reproduce the sky PSF features (and this is expected) : we discuss why, and describe the different issues we have to solve, and the different experiment we will do, in order to achieve a good reconstruction.

Paper Details

Date Published: 21 July 2014
PDF: 9 pages
Proc. SPIE 9148, Adaptive Optics Systems IV, 91484S (21 July 2014); doi: 10.1117/12.2057154
Show Author Affiliations
Laurent Jolissaint, Univ. of Applied Sciences Western Switzerland (Switzerland)
Sam Ragland, W. M. Keck Observatory (United States)
Peter Wizinowich, W. M. Keck Observatory (United States)
Audrey Bouxin, Univ. of Applied Sciences Western Switzerland (Switzerland)

Published in SPIE Proceedings Vol. 9148:
Adaptive Optics Systems IV
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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