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Paper Abstract

The multi-conjugate adaptive optics (MCAO) system design for the Gemini-South 8-meter telescope will provide near-diffraction-limited, highly uniform atmospheric turbulence compensation at near-infrared wavelengths over a 2 arc minute diameter field-of-view. The design includes three deformable mirrors optically conjugate to ranges of 0, 4.5, and 9.0 kilometers with 349, 468, and 208 actuators, five 10-Watt-class sodium laser guide stars (LGSs) projected from a laser launch telescope located behind the Gemini secondary mirror, five Shack-Hartmann LGS wavefront sensors of order 16 by 16, and three tip/tilt natural guide star (NGS) wavefront sensors to measure tip/tilt and tilt anisoplanatism wavefront errors. The WFS sampling rate is 800 Hz. This paper provides a brief overview of sample science applications and performance estimates for the Gemini South MCAO system, together with a summary of the performance requirements and/or design status of the principal subsystems. These include the adaptive optics module (AOM), the laser system (LS), the beam transfer optics (BTO) and laser launch telescope (LLT), the real time control (RTC) system, and the aircraft safety system (SALSA).

Paper Details

Date Published: 7 February 2003
PDF: 12 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.459692
Show Author Affiliations
Brent L. Ellerbroek, Gemini Observatory (United States)
Francois J. Rigaut, Gemini Observatory (United States)
Brian J. Bauman, Lawrence Livermore National Lab. (United States)
Corinne Boyer, Gemini Observatory (United States)
Stephen L. Browne, The Optical Sciences Co. (United States)
Richard A. Buchroeder, Optical Design Service (United States)
James W. Catone, Gemini Observatory (United States)
Paul Clark, Univ. of Durham (United Kingdom)
Celine d'Orgeville, Gemini Observatory (United States)
Donald T. Gavel, Lawrence Livermore National Lab. (United States)
Glen Herriot, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)
Mark R. Hunten, Gemini Observatory (United States)
Eric James, Gemini Observatory (United States)
Edward J. Kibblewhite, Univ. of Chicago (United States)
Iain T. McKinnie, Coherent Technologies, Inc. (United States)
James T. Murray, Lite Cycles, Inc. (United States)
Didier Rabaud, SHAKTIWARE/ONERA (France)
Leslie K. Saddlemyer, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)
Jacques Sebag, Gemini Observatory (United States)
James Stillburn, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)
John M. Telle, Air Force Research Lab. (United States)
Jean-Pierre Veran, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)


Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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