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Proceedings Paper

Photometric techniques, performance and PSF characterization of GeMS
Author(s): Paolo Turri; Alan W. McConnachie; Peter B. Stetson; David R. Andersen; Jean-Pierre Véran; Giuliana Fiorentino; Davide Massari
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Paper 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.

Paper Details

Date Published: 26 July 2016
PDF: 8 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 990907 (26 July 2016); doi: 10.1117/12.2233109
Show Author Affiliations
Paolo Turri, Univ. of Victoria (Canada)
NRC - Herzberg Astronomy & Astrophysics (Canada)
Alan W. McConnachie, NRC - Herzberg Astronomy & Astrophysics (Canada)
Peter B. Stetson, NRC - Herzberg Astronomy & Astrophysics (Canada)
David R. Andersen, NRC - Herzberg Astronomy & Astrophysics (Canada)
Jean-Pierre Véran, NRC - Herzberg Astronomy & Astrophysics (Canada)
Giuliana Fiorentino, Osservatorio Astronomico di Bologna (Italy)
Davide Massari, Osservatorio Astronomico di Bologna (Italy)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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