13 September 2012 Status of the GRAAL system development: very wide-field correction with 4 laser guide-stars
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Abstract
We recall the design and present the development status of GRAAL, the Ground-layer adaptive optics assisted by Laser, which will deliver wide-field (10 arcmin), enhanced images to the HAWK-I instrument on the VLT, with an improved seeing. GRAAL is an adaptive optics module, part of the Adaptive optics facility (AOF), using four Laser- and one natural guide-stars to measure the turbulence, and correcting for it by deforming the adaptive secondary mirror of a Unit telescope in the Paranal observatory. GRAAL is in the laboratory in Europe and the integration of its laser guide-star optics is completed. The first wave-front sensor camera will be ready for its integration in the coming weeks, allowing the first system tests to start.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Paufique, J. Paufique, J. Argomedo, J. Argomedo, R. Arsenault, R. Arsenault, R. Conzelmann, R. Conzelmann, R. Donaldson, R. Donaldson, N. Hubin, N. Hubin, L. Jochum, L. Jochum, A. Jost, A. Jost, M. Kiekebusch, M. Kiekebusch, J. Kolb, J. Kolb, H. Kuntschner, H. Kuntschner, M. Le Louarn, M. Le Louarn, P-Y. Madec, P-Y. Madec, R. Siebenmorgen, R. Siebenmorgen, S. Tordo, S. Tordo, } "Status of the GRAAL system development: very wide-field correction with 4 laser guide-stars", Proc. SPIE 8447, Adaptive Optics Systems III, 844738 (13 September 2012); doi: 10.1117/12.927265; https://doi.org/10.1117/12.927265
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