27 July 2016 GRAAL on the mountaintop
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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.
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Jérôme Paufique, Jérôme Paufique, Pierre-Yves Madec, Pierre-Yves Madec, Johann Kolb, Johann Kolb, Harald Kuntschner, Harald Kuntschner, Javier Argomedo, Javier Argomedo, Mario J. Kiekebusch, Mario J. Kiekebusch, Robert H. Donaldson, Robert H. Donaldson, Robin Arsenault, Robin Arsenault, Ralf Siebenmorgen, Ralf Siebenmorgen, Christian Soenke, Christian Soenke, Sebastien Tordo, Sebastien Tordo, Ralf D. Conzelmann, Ralf D. Conzelmann, Andreas Jost, Andreas Jost, Javier Reyes-Moreno, Javier Reyes-Moreno, Mark Downing, Mark Downing, Pascale Hibon, Pascale Hibon, Jose Javier Valenzuela, Jose Javier Valenzuela, Pierre Haguenauer, Pierre Haguenauer, } "GRAAL on the mountaintop", Proc. SPIE 9909, Adaptive Optics Systems V, 99092H (27 July 2016); doi: 10.1117/12.2232826; https://doi.org/10.1117/12.2232826
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