The GMT adaptive optics system
Date
2010
Authors
Hinz, Philip
Bouchez, A
Johns, Matt
Shectman, Stephen
Hart, Michael
McLeod, Brian A
McGregor, Peter
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Volume Title
Publisher
SPIE - The International Society for Optical Engineering
Abstract
The design of the adaptive optics (AO) system for the GMT is currently being developed. The baseline system is planned around a segmented adaptive secondary mirror (ASM), with elements similar in size to current ASM's for 8 m telescopes. A facility wavefront sensing system is planned to provide AO correction at several science instrument ports. The AO system will contain a subsystem dedicated to controlling the relative phases between the seven segments of the GMT aperture. The anticipated modes include natural guide star, laser tomography, and ground layer adaptive optics. A cooled optical relay is described to provide baffling and reimaging of the focal plane to the various science ports. The laser projection system will use six beacons on an adjustable radius to support both diffraction-limited and ground layer correction modes. Modeling work, as well as science instrument design development will be integrated with this design effort to develop a concept that provides efficient diffraction-limited performance and seeing-improved capabilities for the GMT.
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Keywords
Keywords: Adaptive optics systems; Adaptive secondary mirrors; Baseline systems; Design effort; Diffraction limited; Focal Plane; Giant magellan telescopes; Ground layer; Ground-layer adaptive optics; Instrument designs; Laser projection system; Laser tomography; N Adaptive optics; Giant magellan telescope
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Proceedings of SPIE - The International Society for Optical Engineering
Type
Conference paper
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Restricted until
2037-12-31
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