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Proceedings Paper

Adaptive optics for the Gran Telescopio Canarias
Author(s): Nicholas Devaney; C. Delores Bello; James Keen; Lotti Jochum
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Paper Abstract

It is foreseen that the Gran Telescopio Canarias will include an Adaptive Optics (AO) system to provide diffraction-limited images in the near-IR. The preliminary scientific requirements are presented here and are used to determine the basic system specifications. The sky coverage is determined for the cases of natural and laser guide stars. The results of conjugating the deformable mirror to the entrance pupil and to the mean turbulence height are compared. The Gran Telescopio Canarias will employ a segmented primary mirror. This will introduce discontinuous wavefront errors due to possible effects of these errors on the AO performance. The resulting requirements for these errors are compared with those determined by the error budget for long-exposure image quality.

Paper Details

Date Published: 11 September 1998
PDF: 7 pages
Proc. SPIE 3353, Adaptive Optical System Technologies, (11 September 1998); doi: 10.1117/12.321713
Show Author Affiliations
Nicholas Devaney, Instituto de Astrofisica de Canarias (Spain)
C. Delores Bello, Instituto de Astrofisica de Canarias (Spain)
James Keen, Univ. of Cambridge (United Kingdom)
Lotti Jochum, Instituto de Astrofisica de Canarias (Spain)

Published in SPIE Proceedings Vol. 3353:
Adaptive Optical System Technologies
Domenico Bonaccini; Robert K. Tyson, Editor(s)

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