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Proceedings Paper

GLAS: engineering a common-user Rayleigh laser guide star for adaptive optics on the William Herschel Telescope
Author(s): Gordon Talbot; Don Carlos Abrams; Nikolaos Apostolakos; Richard Bassom; Colin Blackburn; Maarten Blanken; Diego Cano Infantes; Alan Chopping; Kevin Dee; Nigel Dipper; Eddy Elswijk; Bernard Enthoven; Thomas Gregory; Rik ter Horst; Ron Humphreys; Jan Idserda; Paul Jolley; Sjouke Kuindersma; Richard McDermid; Tim Morris; Richard Myers; Sergio Pico; Johan Pragt; Simon Rees; Jürg Rey; Marcos Reyes; René Rutten; Ton Schoenmaker; Jure Skvarc; Niels Tromp; Simon Tulloch; Auke Veninga
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Paper Abstract

The GLAS (Ground-layer Laser Adaptive-optics System) project is to construct a common-user Rayleigh laser beacon that will work in conjunction with the existing NAOMI adaptive optics system, instruments (near IR imager INGRID, optical integral field spectrograph OASIS, coronagraph OSCA) and infrastructure at the 4.2-m William Herschel Telescope (WHT) on La Palma. The laser guide star system will increase sky coverage available to high-order adaptive optics from ~1% to approaching 100% and will be optimized for scientific exploitation of the OASIS integral-field spectrograph at optical wavelengths. Additionally GLAS will be used in on-sky experiments for the application of laser beacons to ELTs. This paper describes the full range of engineering of the project ranging through the laser launch system, wavefront sensors, computer control, mechanisms, diagnostics, CCD detectors and the safety system. GLAS is a fully funded project, with final design completed and all equipment ordered, including the laser. Integration has started on the WHT and first light is expected summer 2006.

Paper Details

Date Published: 28 June 2006
PDF: 12 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 62722H (28 June 2006); doi: 10.1117/12.669942
Show Author Affiliations
Gordon Talbot, Isaac Newton Group of Telescopes (Spain)
Don Carlos Abrams, Isaac Newton Group of Telescopes (Spain)
Nikolaos Apostolakos, Isaac Newton Group of Telescopes (Spain)
Richard Bassom, Isaac Newton Group of Telescopes (Spain)
Colin Blackburn, Univ. of Durham (United Kingdom)
Maarten Blanken, Isaac Newton Group of Telescopes (Spain)
Diego Cano Infantes, Isaac Newton Group of Telescopes (Spain)
Alan Chopping, Isaac Newton Group of Telescopes (Spain)
Kevin Dee, Isaac Newton Group of Telescopes (Spain)
Nigel Dipper, Univ. of Durham (United Kingdom)
Eddy Elswijk, ASTRON (Netherlands)
Bernard Enthoven, ASTRON (Netherlands)
Thomas Gregory, Isaac Newton Group of Telescopes (Spain)
Rik ter Horst, ASTRON (Netherlands)
Ron Humphreys, Univ. of Durham (United Kingdom)
Jan Idserda, ASTRON (Netherlands)
Paul Jolley, Isaac Newton Group of Telescopes (Spain)
Sjouke Kuindersma, ASTRON (Netherlands)
Richard McDermid, Leiden Observatory (Netherlands)
Tim Morris, Univ. of Durham (United Kingdom)
Richard Myers, Univ. of Durham (United Kingdom)
Sergio Pico, Isaac Newton Group of Telescopes (Spain)
Johan Pragt, ASTRON (Netherlands)
Simon Rees, Isaac Newton Group of Telescopes (Spain)
Jürg Rey, Isaac Newton Group of Telescopes (Spain)
Marcos Reyes, Instituto de Astrofísica de Canarias (Spain)
René Rutten, Isaac Newton Group of Telescopes (Spain)
Ton Schoenmaker, ASTRON (Netherlands)
Jure Skvarc, Isaac Newton Group of Telescopes (Spain)
Niels Tromp, ASTRON (Netherlands)
Simon Tulloch, Isaac Newton Group of Telescopes (Spain)
Auke Veninga, ASTRON (Netherlands)


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

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