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Proceedings Paper

Integration and test of the first light AO system for LBT
Author(s): Simone Esposito; Andrea Tozzi; Alfio T. Puglisi; Enrico Pinna; Paolo Stefanini; Gabriele Giorgetti; Fabrizio Camiciottoli; Piero Salinari; Paolo Bianchi; Jesper Storm
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Paper Abstract

The paper describes the single conjugate AO system called WLBT to be mounted at LBT in late summer 2004. The WLBT is part of the Acquisition, Guiding & Wavefront sensing unit (AGW) attached to the front bent Gregorian foci derotator. The two key features of this system are the use of a pyramid wavefront sensor with variable sampling between 30x30 and 5x5 sub apertures plus the use of an adaptive secondary mirror having 672 actuators as wavefront corrector. The AO system is mainly working as atmospheric disturbance correction system in the near infrared (J,H and K band). However due to the large number of actuators and sub apertures, it can obtain good performance even in R and I band. The paper reports about development and integration of the system final unit in the lab. Then some initial tests aimed to do a system characterization are reported. The results we obtained are used to give an estimation of the performance that the system can reach at the telescope in terms of limiting magnitude.

Paper Details

Date Published: 25 October 2004
PDF: 8 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.551724
Show Author Affiliations
Simone Esposito, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Andrea Tozzi, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Alfio T. Puglisi, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Enrico Pinna, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Paolo Stefanini, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Gabriele Giorgetti, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Fabrizio Camiciottoli, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Piero Salinari, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Paolo Bianchi, Istituto Nazionale di Ottica Applicata (Italy)
Jesper Storm, Astrophysikalisches Institut Potsdam (Germany)


Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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