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Proceedings Paper

Design and predicted performance of the GMT ground-layer adaptive optics mode
Author(s): Philip M. Hinz; Guido Brusa; Vidhya Vaitheeswaran; Tom McMahon; Tom Connors; Russell Knox; Antonin Bouchez; Manny Montoya
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Paper Abstract

The Giant Magellan Telescope is planning to provide adaptive wavefront correction of the low layers (<1 km) of atmospheric turbulence in support of wide-field instrumentation. This ground-layer adaptive optics (GLAO) mode will use the adaptive secondary mirrors to provide improved image quality over approximately 7 arcminutes FOV. We present a comparison between the use of a sodium laser guide star asterism plus three tip-tilt natural guide stars versus natural guide stars only on the average seeing width improvement. The layout and components of both (laser beacon based and natural star only based) GLAO concepts are described and the impact and interaction with other GMT subsystems is analyzed.

Paper Details

Date Published: 13 September 2012
PDF: 13 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84473R (13 September 2012); doi: 10.1117/12.926727
Show Author Affiliations
Philip M. Hinz, Steward Observatory, The Univ. of Arizona (United States)
Guido Brusa, Steward Observatory, The Univ. of Arizona (United States)
Vidhya Vaitheeswaran, Steward Observatory, The Univ. of Arizona (United States)
Tom McMahon, Steward Observatory, The Univ. of Arizona (United States)
Tom Connors, Steward Observatory, The Univ. of Arizona (United States)
Russell Knox, Steward Observatory, The Univ. of Arizona (United States)
Antonin Bouchez, Giant Magellan Telescope Organization Corp. (United States)
Manny Montoya, Steward Observatory, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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