MCAO for Gemini South

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

doi:10.1117/12.459692

7 February 2003 MCAO for Gemini South

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

Author Affiliations +

Proceedings Volume 4839, Adaptive Optical System Technologies II; (2003) https://doi.org/10.1117/12.459692
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

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).

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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, and Jean-Pierre Veran "MCAO for Gemini South", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); https://doi.org/10.1117/12.459692

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