ARGOS: the laser guide star system for the LBT
2010; SPIE; Volume: 7736; Linguagem: Inglês
10.1117/12.857210
ISSN1996-756X
AutoresS. Rabien, N. Ageorges, L. Barl, U. Beckmann, T. Blümchen, Marco Bonaglia, J. L. Borelli, Joar Brynnel, Lorenzo Busoni, Luca Carbonaro, Richard Davies, Matthias Deysenroth, Oliver Durney, M. Elberich, Simone Esposito, Victor Gasho, W. Gässler, Hans Gemperlein, R. Genzel, R. Green, M. Haug, Michael Hart, P. Hubbard, S. Kanneganti, Elena Masciadri, Jamison Noenickx, Gilles Orban de Xivry, D. Peter, A. Quirrenbach, Matt Rademacher, H.-W. Rix, P. Salinari, Christian Schwab, J. Storm, L. Strüder, Markus Thiel, G. Weigelt, J. Ziegleder,
Tópico(s)Advanced optical system design
ResumoARGOS is the Laser Guide Star adaptive optics system for the Large Binocular Telescope. Aiming for a wide field adaptive optics correction, ARGOS will equip both sides of LBT with a multi laser beacon system and corresponding wavefront sensors, driving LBT's adaptive secondary mirrors. Utilizing high power pulsed green lasers the artificial beacons are generated via Rayleigh scattering in earth's atmosphere. ARGOS will project a set of three guide stars above each of LBT's mirrors in a wide constellation. The returning scattered light, sensitive particular to the turbulence close to ground, is detected in a gated wavefront sensor system. Measuring and correcting the ground layers of the optical distortions enables ARGOS to achieve a correction over a very wide field of view. Taking advantage of this wide field correction, the science that can be done with the multi object spectrographs LUCIFER will be boosted by higher spatial resolution and strongly enhanced flux for spectroscopy. Apart from the wide field correction ARGOS delivers in its ground layer mode, we foresee a diffraction limited operation with a hybrid Sodium laser Rayleigh beacon combination.
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