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Proceedings Paper

On-sky test of the pyramid wavefront sensor
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Paper Abstract

The Adaptive Optics for the Telescopio Nazionale Galileo module (namely AdOpt@TNG) implements the pyramid wavefront sensor as a unique feature. This allows to get valuable information on its performance on the sky. An updated overview of the results obtained so far is shown, including a discussion on the sources of errors in the closed loop operation, distinguishing them between the ones specific of the pyramid wavefront sensor and the one more related to the system as a whole. This system allows also for a number of experiments and check of the sensitivity of such a wavefront sensor, especially in comparison with other types of sensing units. The ways to accomplish such an experiment in a convincing way are shown along with the first results obtained so far. Finally, we describe how and up to which extent a number of practical problems encountered in the near past can be solved implementing the recent new ideas on the pyramid theme, many of which popped up from our "lessons learned".

Paper Details

Date Published: 7 February 2003
PDF: 9 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.458962
Show Author Affiliations
Adriano Ghedina, Telescopio Nazionale Galileo (Spain)
Massimo Cecconi, Telescopio Nazionale Galileo (Spain)
Roberto Ragazzoni, Osservatorio Astrofisico di Arcetri (Italy)
Jacopo Farinato, Osservatorio Astrofisico di Arcetri (Italy)
Andrea Baruffolo, Osservatorio Astronomico di Padova (Italy)
Giuseppe Crimi, Osservatorio Astronomico di Brera (Italy)
Emiliano Diolaiti, Osservatorio Astronomico di Padova (Italy)
Simone Esposito, Osservatorio Astrofisico di Arcetri (Italy)
Luca Fini, Osservatorio Astrofisico di Arcetri (Italy)
Mauro Ghigo, Osservatorio Astrofisico di Brera (Italy)
Enrico Marchetti, European Southern Observatory (Germany)
Tiziano Niero, Osservatorio Astronomico di Padova (Italy)
Alfio Puglisi, Osservatorio Astrofisico di Arcetri (Italy)


Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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