Integration and test of the first light AO system for LBT

Simone Esposito; Andrea Tozzi; Alfio T. Puglisi; Enrico Pinna; Paolo Stefanini; Gabriele Giorgetti; Fabrizio Camiciottoli; Piero Salinari; Paolo Bianchi; Jesper Storm

doi:10.1117/12.551724

25 October 2004 Integration and test of the first light AO system for LBT

Simone Esposito, Andrea Tozzi, Alfio T. Puglisi, Enrico Pinna, Paolo Stefanini, Gabriele Giorgetti, Fabrizio Camiciottoli, Piero Salinari, Paolo Bianchi, Jesper Storm

Author Affiliations +

Proceedings Volume 5490, Advancements in Adaptive Optics; (2004) https://doi.org/10.1117/12.551724
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

Simone Esposito, Andrea Tozzi, Alfio T. Puglisi, Enrico Pinna, Paolo Stefanini, Gabriele Giorgetti, Fabrizio Camiciottoli, Piero Salinari, Paolo Bianchi, and Jesper Storm "Integration and test of the first light AO system for LBT", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); https://doi.org/10.1117/12.551724

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