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Proceedings Paper

GRAAL on the mountaintop
Author(s): Jérôme Paufique; Pierre-Yves Madec; Johann Kolb; Harald Kuntschner; Javier Argomedo; Mario J. Kiekebusch; Robert H. Donaldson; Robin Arsenault; Ralf Siebenmorgen; Christian Soenke; Sebastien Tordo; Ralf D. Conzelmann; Andreas Jost; Javier Reyes-Moreno; Mark Downing; Pascale Hibon; Jose Javier Valenzuela; Pierre Haguenauer
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Paper Abstract

GRAAL is the adaptive optics module feeding the wide-field IR imager HAWK-I at the VLT observatory. As part of the adaptive optics facility, GRAAL is equipped with 4 Laser-guide star wave-front sensors and provides a large field-of-view, ground layer correction system to HAWK-I. After a successful testing in Europe, the module has been re-assembled in Chile and installed at the Nasmyth-A platform of Yepun, the fourth Unit telescope of the observatory. We report on the installation of GRAAL on the mountain and on its first testing in stand-alone and on-sky.

Paper Details

Date Published: 27 July 2016
PDF: 15 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99092H (27 July 2016); doi: 10.1117/12.2232826
Show Author Affiliations
Jérôme Paufique, European Southern Observatory (Germany)
Pierre-Yves Madec, European Southern Observatory (Germany)
Johann Kolb, European Southern Observatory (Germany)
Harald Kuntschner, European Southern Observatory (Germany)
Javier Argomedo, European Southern Observatory (Germany)
Mario J. Kiekebusch, European Southern Observatory (Germany)
Robert H. Donaldson, European Southern Observatory (Germany)
Robin Arsenault, European Southern Observatory (Germany)
Ralf Siebenmorgen, European Southern Observatory (Germany)
Christian Soenke, European Southern Observatory (Germany)
Sebastien Tordo, European Southern Observatory (Germany)
Ralf D. Conzelmann, European Southern Observatory (Germany)
Andreas Jost, European Southern Observatory (Germany)
Javier Reyes-Moreno, European Southern Observatory (Germany)
Mark Downing, European Southern Observatory (Germany)
Pascale Hibon, European Southern Observatory (Germany)
Jose Javier Valenzuela, European Southern Observatory (Germany)
Pierre Haguenauer, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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