26 July 2016 Photometric techniques, performance and PSF characterization of GeMS
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Abstract
GeMS is the multi-conjugate adaptive optics instrument at the Gemini South telescope in Chile, the first facility-class MCAO system and the first to use laser guide stars. During its science verification period we have observed the Galactic globular cluster NGC 1851 and here we discuss the optimization of the analysis techniques that we adopt to extract science-ready photometric measurements. We use the large number of stars in the field of view to determine with high accuracy the PSF model for the profile fitting photometry. Understanding the correct techniques not only has proven useful with GeMS data but will be valuable on the next generation of Extremely Large Telescopes, where MCAO will be a central technology.
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Paolo Turri, Alan W. McConnachie, Peter B. Stetson, David R. Andersen, Jean-Pierre Véran, Giuliana Fiorentino, Davide Massari, "Photometric techniques, performance and PSF characterization of GeMS", Proc. SPIE 9909, Adaptive Optics Systems V, 990907 (26 July 2016); doi: 10.1117/12.2233109; https://doi.org/10.1117/12.2233109
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