Quasi-static aberrations induced by laser guide stars in adaptive optics

Creators: van Dam, Marcos A.; Bouchez, Antonin H.; Le Mignant, David; Wizinowich, Peter L.

Abstract

Laser Guide Star Adaptive Optics (LGS AO) systems use the return from an artificial guide star to measure the wavefront aberrations in the direction of the science object. We observe quasi-static differences between the measured wavefront and the wavefront aberration of the science object. This paper quantifies and explains the source of the difference between the wavefronts measured using an LGS and a natural guide star at the W. M. Keck Observatory, which can be as high as 1000 nm RMS.

Additional Information

© 2006 Optical Society of America Original Manuscript: March 2, 2006; Manuscript Accepted: April 11, 2006; Revised Manuscript: April 11, 2006; Published: August 21, 2006 The data presented herein were obtained at the W. M. Keck Observatory, which 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 authors wish to recognize and acknowledge the significant cultural role and reverence that the summit of Mauna Kea has always had within the Hawaiian community.We are most fortunate to have the opportunity to conduct observations from this mountain. This work has been supported by the National Science Foundation Science and Technology Center for Adaptive Optics, managed by the University of California at Santa Cruz under cooperative agreement No. AST-9876783.

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