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Paper Abstract

Ground layer adaptive optics (GLAO) can significantly decrease the size of the point spread function (PSF) and increase the energy concentration of PSFs over a large field of view at visible and near-infrared wavelengths. This improvement can be realized using a single, relatively low-order deformable mirror (DM) to correct the wavefront errors from low altitude turbulence. Here we present GLAO modeling results from a feasibility study performed for the Gemini Observatory. Using five separate analytic and Monte Carlo models to provide simulations over the large available parameter space, we have completed a number of trade studies exploring the impact of changing field of view, number and geometry of laser guide stars, DM conjugate altitude and DM actuator density on the GLAO performance measured over a range of scientific wavelengths and turbulence profiles.

Paper Details

Date Published: 28 June 2006
PDF: 12 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 62725B (28 June 2006); doi: 10.1117/12.672229
Show Author Affiliations
David R. Andersen, NRC, Herzberg Institute of Astrophysics (Canada)
David Crampton, NRC, Herzberg Institute of Astrophysics (Canada)
Kei Szeto, NRC, Herzberg Institute of Astrophysics (Canada)
Simon Morris, Univ. of Durham (United Kingdom)
Michael Lloyd-Hart, Steward Observatory, Univ. of Arizona (United States)
Richard Myers, Univ. of Durham (United Kingdom)
Jeff Stoesz, NRC, Herzberg Institute of Astrophysics (Canada)
Andrei Tokovinin, Cerro Tololo Inter-American Observatory (Chile)
Tim Butterley, Univ. of Durham (United Kingdom)
N. Mark Milton, Steward Observatory, Univ. of Arizona (United States)
Jean-Pierre Véran, NRC, Herzberg Institute of Astrophysics (Canada)
Richard Wilson, Univ. of Durham (United Kingdom)

Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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