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Proceedings Paper

Facility class Rayleigh beacon AO system for the 4.2m William Herschel Telescope
Author(s): Rene G.M. Rutten; Paul Clark; Richard M. Myers; Richard W. Wilson; Richard G. Bingham; Eric Emsellem; Thomas Gregory; Ronald A. Humphreys; Johan Knapen; Gilberto Moretto; Simon L. Morris; Gordon Talbot
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Paper Abstract

A rationale is presented for the use of a relatively low-altitude (15km) Rayleigh Laser Guide Star to provide partial adaptive optics correction across a large fraction of the sky on the 4.2m William Herschel Telescope. The scientific motivation in relation to the available instrumentation suite is discussed and supported by model performance calculations, based on observed atmospheric turbulence distributions at the site. The proposed implementation takes the form of a laser system, beam diagnostics, tip-tilt mirror and beacon launch telescope, together with a range-gated wavefront sensor and processing system. It is designed to operate in conjunction with the telescope’s existing facility-class natural guide star AO system, NAOMI. Aspects of the proposed implementation are described as well as the technical features related to the system model and the error budget. In a separate paper the NAOMI AO system itself is presented. Other papers describe a demonstrator system and preliminary Rayleigh beacon wavefront sensing measurements at the site.

Paper Details

Date Published: 7 February 2003
PDF: 10 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.459235
Show Author Affiliations
Rene G.M. Rutten, Instituto de Astrofisica de Canarias and Netherlands Organization for Scientific Research (Spain)
Paul Clark, Univ. of Durham (United Kingdom)
Richard M. Myers, Univ. of Durham (United Kingdom)
Richard W. Wilson, Univ. of Durham (United Kingdom)
Richard G. Bingham, Univ. College London (United Kingdom)
Eric Emsellem, Observatoire de Lyon (France)
Thomas Gregory, Instituto de Astrofisica de Canarias (Spain)
Ronald A. Humphreys, Univ. of Durham (United Kingdom)
Johan Knapen, Instituto de Astrofisica de Canarias (Spain)
Univ. of Hertfordshire (United Kingdom)
Gilberto Moretto, Univ. of Durham (United Kingdom)
Simon L. Morris, Univ. of Durham (United Kingdom)
Gordon Talbot, Instituto de Astrofisica de Canarias (Spain)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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