ELPOA: data processing of chromatic differences of the tilt measured with a polychromatic laser guide star

Jerome Vaillant; Eric Thiebaut; Michel Tallon

doi:10.1117/12.390341

7 July 2000 ELPOA: data processing of chromatic differences of the tilt measured with a polychromatic laser guide star

Jerome Vaillant, Eric Thiebaut, Michel Tallon

Proceedings Volume 4007, Adaptive Optical Systems Technology; (2000) https://doi.org/10.1117/12.390341
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

In this paper we present an experiment for measuring the chromatic differences of the tilt used for polychromatic laser guide star, a suitable solution to overcome the monochromatic laser guide star limitation: the tilt indetermination. A comparative study between two types of data processing is done: the classical estimation of angle of arrival by the image center of gravity, and a new one: an estimation of tilts by fitting a phase map in the polychromatic case. From these studies, expected precision is derived and comparison between simulations and data is done.

Citation Download Citation

Jerome Vaillant, Eric Thiebaut, and Michel Tallon "ELPOA: data processing of chromatic differences of the tilt measured with a polychromatic laser guide star", Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); https://doi.org/10.1117/12.390341

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