Share Email Print
cover

Proceedings Paper

Status of the GRAAL system development: very wide-field correction with 4 laser guide-stars
Author(s): J. Paufique; J. Argomedo; R. Arsenault; R. Conzelmann; R. Donaldson; N. Hubin; L. Jochum; A. Jost; M. Kiekebusch; J. Kolb; H. Kuntschner; M. Le Louarn; P-Y. Madec; R. Siebenmorgen; S. Tordo
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper 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.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 844738 (13 September 2012); doi: 10.1117/12.927265
Show Author Affiliations
J. Paufique, European Southern Observatory (Germany)
J. Argomedo, European Southern Observatory (Germany)
R. Arsenault, European Southern Observatory (Germany)
R. Conzelmann, European Southern Observatory (Germany)
R. Donaldson, European Southern Observatory (Germany)
N. Hubin, European Southern Observatory (Germany)
L. Jochum, European Southern Observatory (Germany)
A. Jost, European Southern Observatory (Germany)
M. Kiekebusch, European Southern Observatory (Germany)
J. Kolb, European Southern Observatory (Germany)
H. Kuntschner, European Southern Observatory (Germany)
M. Le Louarn, European Southern Observatory (Germany)
P-Y. Madec, European Southern Observatory (Germany)
R. Siebenmorgen, European Southern Observatory (Germany)
S. Tordo, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

© SPIE. Terms of Use
Back to Top