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Proceedings Paper

Evaluation of ground layer adaptive optics for the wide-field optical spectrograph on the TMT
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Paper Abstract

We arrive at a Ground Layer Adaptive Optics (GLAO) design that offers true seeing-improved performance and operation for the red and infrared wavelengths. The design requires an adaptive secondary (AM2) and that the sodium Laser Guide Star (LGS) launch telescope be able to steer four of the beams to 8.5 arcminutes off-axis. When provided with this, the proposed design is potentially the simplest, lowest cost design that can take the form of an upgrade. This is seen as a significant advantage over designs that would build an adaptive mirror into each of the four arms of WFOS. We show that the performance penalty for using one mirror instead of four to correct the entire 81 square arcminute WFOS field is minor.

Paper Details

Date Published: 28 June 2006
PDF: 13 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 62724N (28 June 2006); doi: 10.1117/12.672578
Show Author Affiliations
Jeff Stoesz, National Research Council of Canada, Herzberg Institute of Astrophysics (Canada)
Univ. of Victoria (Canada)
Jean-Pierre Véran, National Research Council of Canada, Herzberg Institute of Astrophysics (Canada)
Scott Roberts, National Research Council of Canada, Herzberg Institute of Astrophysics (Canada)
Brent Ellerbroek, Thirty Meter Telescope Project (United States)
Matthew Britton, Caltech Optical Observatories (United States)


Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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