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MCAO for Gemini South

Ellerbroek, Brent L. and Rigaut, François and Bauman, Brian and Boyer, Corinne and Browne, Steven and Buchroeder, Richard and Catone, James and Clark, Paul and d'Orgeville, Celine and Gavel, Donald and Herriot, Glen and Hunten, Mark R. and James, Eric and Kibblewhite, Edward and McKinnie, Iain and Murray, James and Rabaud, Didier and Saddlemyer, Leslie and Sebag, Jacques and Stillburn, James and Telle, John and Véran, Jean-Pierre (2003) MCAO for Gemini South. In: Adaptive Optical System Technologies II. Proceedings of SPIE. No.4839. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 55-66. ISBN 9780819446183.

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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).

Item Type:Book Section
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Clark, Paul0000-0002-6576-7400
Additional Information:© 2003 Society of Photo-optical Instrumentation Engineers (SPIE). This work was supported by the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini Partnership: the National Science Foundation (United States), the Particle Physics and Astronomy Research Council (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), CNPq (Brazil), and CONICET (Argentina).
Funding AgencyGrant Number
Gemini ObservatoryUNSPECIFIED
Association of Universities for Research in Astronomy (AURA)UNSPECIFIED
Subject Keywords:Multi-conjugate adaptive optics, laser guide stars, adaptive optical systems
Series Name:Proceedings of SPIE
Issue or Number:4839
Record Number:CaltechAUTHORS:20180725-103829331
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Official Citation:Brent L. Ellerbroek, Francois J. Rigaut, Brian J. Bauman, Corinne Boyer, Stephen L. Browne, Richard A. Buchroeder, James W. Catone, Paul Clark, Celine d'Orgeville, Donald T. Gavel, Glen Herriot, Mark R. Hunten, Eric James, Edward J. Kibblewhite, Iain T. McKinnie, James T. Murray, Didier Rabaud, Leslie K. Saddlemyer, Jacques Sebag, James Stillburn, John M. Telle, Jean-Pierre Veran, "MCAO for Gemini South", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.459692;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88247
Deposited By: Tony Diaz
Deposited On:25 Jul 2018 17:50
Last Modified:16 Nov 2021 00:25

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