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

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

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4007..308v&link_type=abstract

Proc. SPIE Vol. 4007, p. 308-315, Adaptive Optical Systems Technology, Peter L. Wizinowich; Ed.

Computer Science

1

Scientific paper

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.

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