Laser guide star adaptive optics point spread function reconstruction project at W. M. Keck Observatory: preliminary on-sky results

Laurent Jolissaint; Sam Ragland; Peter Wizinowich; Audrey Bouxin

doi:10.1117/12.2057154

21 July 2014 Laser guide star adaptive optics point spread function reconstruction project at W. M. Keck Observatory: preliminary on-sky results

Laurent Jolissaint, Sam Ragland, Peter Wizinowich, Audrey Bouxin

Author Affiliations +

Proceedings Volume 9148, Adaptive Optics Systems IV; 91484S (2014) https://doi.org/10.1117/12.2057154
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

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.

Citation Download Citation

Laurent Jolissaint, Sam Ragland, Peter Wizinowich, and Audrey Bouxin "Laser guide star adaptive optics point spread function reconstruction project at W. M. Keck Observatory: preliminary on-sky results", Proc. SPIE 9148, Adaptive Optics Systems IV, 91484S (21 July 2014); https://doi.org/10.1117/12.2057154

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