Additional telescope techniques for laser guide star tip-tilt retrieval

Roberto Ragazzoni; Simone Esposito

doi:10.1117/12.290141

17 October 1997 Additional telescope techniques for laser guide star tip-tilt retrieval

Roberto Ragazzoni, Simone Esposito

Proceedings Volume 3126, Adaptive Optics and Applications; (1997) https://doi.org/10.1117/12.290141
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Laser Guide Star tip-tilt recovery is a central and crucial problem in the framework of adaptive optics systems capable of full-sky diffraction limited performances. In the last years a number of techniques involving auxiliary telescopes shooting additional Laser Guide Stars or probing portions of the main Laser Guide Star generated by the main observatory has been outlined and published. Two of these techniques, relying on Natural Guide Stars well away from the isokinetic patch of the observed scientific target, uses some additional telescopes in the neighborouds to be used as differential tilt telescopes or as auxiliary laser projectors. A comparison of the ground impact and of the maximum achievable performances due to conical anisokinetism problems inherent to the additional telescopes is given.

Citation Download Citation

Roberto Ragazzoni and Simone Esposito "Additional telescope techniques for laser guide star tip-tilt retrieval", Proc. SPIE 3126, Adaptive Optics and Applications, (17 October 1997); https://doi.org/10.1117/12.290141

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