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Proceedings Paper

Adaptive optics for the Thirty Meter Telescope
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Paper Abstract

Adaptive Optics (AO) will be essential for at least seven of the eight science instruments currently planned for the Thirty Meter Telescope (TMT). These instruments include three near infra-red (NIR) imagers and spectrometers with fields of view from 2 to 30 arc seconds, a mid-IR echelle spectrometer, a planet formation imager/spectrometer, a wide field optical spectrograph, and a NIR multi-object spectrometer with multiple integral field units deployable over a 5 arc minute field of regard. In this paper we describe the overall AO reference design that supports these instruments, which consists of a facility AO system feeding the first three instruments and dedicated AO systems for the remaining four. Key design challenges for these systems include very high-order, large-stroke wavefront correction, tip-tilt sensing with faint natural guide stars to maximize sky coverage, laser guidestar wavefront sensing on a very large aperture, and achieving extremely high contrast ratios for the detection of extra-solar planets and other faint companions of bright stars. We describe design concepts for meeting these challenges and summarize our supporting plans for AO component development.

Paper Details

Date Published: 8 October 2005
PDF: 12 pages
Proc. SPIE 5903, Astronomical Adaptive Optics Systems and Applications II, 590304 (8 October 2005); doi: 10.1117/12.619915
Show Author Affiliations
Brent Ellerbroek, California Institute of Technology (United States)
Matthew Britton, California Institute of Technology (United States)
Richard Dekany, California Institute of Technology (United States)
Don Gavel, Univ. of California, Santa Cruz (United States)
Glen Herriot, National Research Council Canada (Canada)
Bruce Macintosh, Lawrence Livermore National Lab. (United States)
Jeff Stoesz, National Research Council Canada (Canada)

Published in SPIE Proceedings Vol. 5903:
Astronomical Adaptive Optics Systems and Applications II
Robert K. Tyson; Michael Lloyd-Hart, Editor(s)

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