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Proceedings Paper

Diffraction limited operation with ARGOS: a hybrid AO system
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Paper Abstract

ARGOS, the Laser Guide Star (LGS) facility of the Large Binocular Telescope (LBT), implements a Ground Layer Adaptive Optics (GLAO) system, using 3 low-altitude beacons, to improve the resolution over the 4'×4' FoV of the imager and Multi Object Spectrograph (MOS) LUCIFER. In this paper we discuss the performance and the reconstruction scheme of an hybrid AO system using the ARGOS Rayleigh beacons complemented with a single faint high-altitude star (NGS or sodium beacon) to sense the turbulence of the upper atmosphere allowing an high degree of on-axis correction. With the ARGOS system, the NGS-upgrade can be immediately implemented at LBT using the already existing Pyramid WFS offering performance similar to the NGS AO system with the advantage of a larger sky coverage.

Paper Details

Date Published: 15 July 2010
PDF: 7 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77362W (15 July 2010); doi: 10.1117/12.858209
Show Author Affiliations
M. Bonaglia, INAF-Osservatorio Astrofisico di Arcetri (Italy)
L. Busoni, INAF-Osservatorio Astrofisico di Arcetri (Italy)
F. Quirós-Pacheco, INAF-Osservatorio Astrofisico di Arcetri (Italy)
S. Esposito, INAF-Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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