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Proceedings Paper

First light adaptive optics systems and components for the Thirty Meter Telescope
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Paper Abstract

Adaptive optics (AO) is essential for many elements of the science case for the Thirty Meter Telescope (TMT). The initial requirements for the observatory's facility AO system include diffraction-limited performance in the near IR, with 50 per cent sky coverage at the galactic pole. Point spread function uniformity and stability over a 30 arc sec field-ofview are also required for precision photometry and astrometry. These capabilities will be achieved via an order 60×60 multi-conjugate AO system (NFIRAOS) with two deformable mirrors, six laser guide star wavefront sensors, and three low-order, IR, natural guide star wavefront sensors within each client instrument. The associated laser guide star facility (LGSF) will employ 150W of laser power at a wavelength of 589 nm to generate the six laser guide stars. We provide an update on the progress in designing, modeling, and validating these systems and their components over the last two years. This includes work on the layouts and detailed designs of NFIRAOS and the LGSF; fabrication and test of a full-scale prototype tip/tilt stage (TTS); Conceptual Designs Studies for the real time controller (RTC) hardware and algorithms; fabrication and test of the detectors for the laser- and natural-guide star wavefront sensors; AO system modeling and performance optimization; lab tests of wavefront sensing algorithms for use with elongated laser guide stars; and high resolution LIDAR measurements of the mesospheric sodium layer. Further details may be found in specific papers on each of these topics.

Paper Details

Date Published: 13 July 2010
PDF: 14 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 773604 (13 July 2010); doi: 10.1117/12.856503
Show Author Affiliations
Brent Ellerbroek, TMT Observatory Corp. (United States)
Sean Adkins, W.M. Keck Observatory (United States)
David Andersen, NRC Herzberg Institute of Astrophysics (Canada)
Jennifer Atwood, NRC Herzberg Institute of Astrophysics (Canada)
Steve Browne, The Optical Sciences Co. (United States)
Corinne Boyer, TMT Observatory Corp. (United States)
Peter Byrnes, NRC Herzberg Institute of Astrophysics (Canada)
Kris Caputa, NRC Herzberg Institute of Astrophysics (Canada)
Rodolphe Conan, Univ. of Victoria (Canada)
Raphael Cousty, CILAS (France)
Daren Erikson, NRC Herzberg Institute of Astrophysics (Canada)
Joeleff Fitzsimmons, NRC Herzberg Institute of Astrophysics (Canada)
Frederick Gamache, Lyrtech Inc. (Canada)
Luc Gilles, TMT Observatory Corp. (United States)
Glen Herriot, NRC Herzberg Institute of Astrophysics (Canada)
Paul Hickson, The Univ. of British Columbia (Canada)
Olivier Lardier, Univ. of Victoria (Canada)
Pierre Morin, CILAS (France)
John Pazder, NRC Herzberg Institute of Astrophysics (Canada)
Thomas Pfrommer, The Univ. of British Columbia (Canada)
David Quinn, Lyrtech Inc. (Canada)
Vladimir Reshetov, NRC Herzberg Institute of Astrophysics (Canada)
Scott Roberts, NRC Herzberg Institute of Astrophysics (Canada)
Jean-Christophe Sinquin, CILAS (France)
Matthias Schoeck, NRC Herzberg Institute of Astrophysics (Canada)
Malcolm Smith, NRC Herzberg Institute of Astrophysics (Canada)
Glenn Tyler, The Optical Sciences Co. (United States)
Jeff Vaughn, The Optical Sciences Co. (United States)
Jean-Pierre Veran, NRC Herzberg Institute of Astrophysics (Canada)
Curt Vogel, Montana State Univ. (United States)
Lianqi Wang, TMT Observatory Corp. (United States)
Ivan Wevers, NRC Herzberg Institute of Astrophysics (Canada)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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