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Proceedings Paper

First performance of the GeMS+GMOS system
Author(s): Pascale Hibon; Benoit Neichel; Vincent Garrel; Benjamin Prout; Francois Rigaut; Alice Koning; Gaetano Sivo; German Gimeno; Rodrigo Carrasco; Claudia Winge; Peter Pessev; Andrew Serio; Gustavo Arriagada
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Paper Abstract

During the 2012 commissioning of the Gemini MCAO System (GeMS) in Gemini South Observatory, we briefly explored the performance improvement brought by pairing GeMS with the Gemini Multi-Object Spectrograph (GMOS), compared to GMOS in natural seeing mode. GMOS is an instrument sensitive in the visible band with imaging and spectroscopic capabilities, hence pushing MCAO toward the visible, a mode for which it was not specifically designed. We report in this paper the first results obtained with the GeMS +GMOS pair. Several globular clusters were observed in imaging mode only. We have derived performance in term of FWHM and determined the improvement against natural seeing. We also obtain photometric, relative and absolute astrometric precision for the AO enhanced images. We also studied the influence of the NGS constellation on the photometric performance. Finally, we also looked at the expected performance of the GeMS+GMOS system once the CCD upgrade, scheduled during 2014, will occur.

Paper Details

Date Published: 6 August 2014
PDF: 8 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91478T (6 August 2014); doi: 10.1117/12.2055196
Show Author Affiliations
Pascale Hibon, Gemini South Observatory (Chile)
Benoit Neichel, Lab. d'Astrophysique de Marseille (France)
Vincent Garrel, Gemini South Observatory (Chile)
Benjamin Prout, The Australian National Univ. (Australia)
Francois Rigaut, The Australian National Univ. (Australia)
Alice Koning, Univ. of Victoria (Canada)
Gaetano Sivo, Gemini South Observatory (Chile)
German Gimeno, Gemini South Observatory (Chile)
Rodrigo Carrasco, Gemini South Observatory (Chile)
Claudia Winge, Gemini South Observatory (Chile)
Peter Pessev, Gemini South Observatory (Chile)
Andrew Serio, Gemini South Observatory (Chile)
Gustavo Arriagada, Gemini South Observatory (Chile)

Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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