27 July 2016 GRAAL on the mountaintop
Author Affiliations +
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.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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, "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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