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Proceedings Paper

Performance predictions of the GLAS Rayleigh laser guide star adaptive optics system for the 4.2-m William Herschel Telescope
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Paper Abstract

Results of numerical simulations of the performance of GLAS (Ground-layer Laser Adaptive optics System) are presented. GLAS uses a Rayleigh laser guide star (LGS) created at a nominal distance of 20km from the 4.2m William Herschel Telescope primary aperture and a semi-analytical model has been used to determine the observed LGS properties. GLAS is primarily intended for use with the OASIS spectrograph working at visible wavelengths although a wider-field IR imaging camera can also use the AO corrected output. Image quality metrics relating to scientific performance for each instrument are used showing that the energy inside every OASIS lenslet across the 10" instrument FOV is approximately doubled, irrespective of atmospheric conditions or wavelength of observation.

Paper Details

Date Published: 28 June 2006
PDF: 12 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 627237 (28 June 2006); doi: 10.1117/12.671226
Show Author Affiliations
Timothy J. Morris, Univ. of Durham (United Kingdom)
Richard W. Wilson, Univ. of Durham (United Kingdom)
Richard M. Myers, Univ. of Durham (United Kingdom)
Timothy Butterley, Univ. of Durham (United Kingdom)
Rene G. M. Rutten, Isaac Newton Group of Telescopes (Spain)
Gordon Talbot, Isaac Newton Group of Telescopes (Spain)

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

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