Physics – Optics
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4839..504p&link_type=abstract
Adaptive Optical System Technologies II. Edited by Wizinowich, Peter L.; Bonaccini, Domenico. Proceedings of the SPIE, Volume 4
Physics
Optics
Scientific paper
The realtime knowledge of the altitude and optical characteristics of a generated Laser Guide Star may be necessary for an independent control of the performances of the associated adaptive optics system. For this ourpose a robotic laser guide star monitoring facility, based on a small telescope physically separated from the observatory has been studied, as a subsystem of the VLT LGS project. After reviewing the state of the art on sodium layer dynamical characteristics, we describe the rationale of the project and the main technical choices. Some particular aspects such as differential field motion and laser plume centroiding algorithms are reviewed in detail. The data processing architecture and the associated pipeline is described, and the expected performances are estimated.
Ageorges Nancy
Pedichini Fernando
Sarazin Marc S.
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