Sodium Photon Return, spot elongation and Fratricide effect: First on-sky results with GeMS

B. Neichel, F. Rigaut, M. Bec, M. Boccas, V. Fesquet, C. D'Orgeville, G. Trancho

Research output: Contribution to conferencePaperpeer-review

Abstract

GeMS, the Gemini MCAO system, is undergoing commissioning. Using 5 laser guide stars and a central launch, GeMS is particularly sensitive to Rayleigh backscatter and the fratricide effect. Using data covering a 5 months period from January to May 2011, we present results on (i) the Sodium return and its variability from night to night, (ii) the spot elongation and (iii) the fratricide effect. A simple modeling of the fratricide is presented as well as possible strategies for mitigation.

Original languageEnglish
Publication statusPublished - 2011
Externally publishedYes
Event2nd International Conference on Adaptive Optics for Extremely Large Telescopes, AO for ELT 2011 - Victoria, BC, Canada
Duration: 25 Sept 201130 Sept 2011

Conference

Conference2nd International Conference on Adaptive Optics for Extremely Large Telescopes, AO for ELT 2011
Country/TerritoryCanada
CityVictoria, BC
Period25/09/1130/09/11

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