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Proceedings Paper

Numerical control matrix rotation for the LINC-NIRVANA multiconjugate adaptive optics system
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Paper Abstract

LINC-NIRVANA will realize the interferometric imaging focal station of the Large Binocular Telescope. A double Layer Oriented multi-conjugate adaptive optics system assists the two arms of the interferometer, supplying high order wave-front correction. In order to counterbalance the field rotation, mechanical derotation for the two ground wave-front sensors, and optical derotators for the mid-high layers sensors fix the positions of the focal planes with respect to the pyramids aboard the wave-front sensors. The derotation introduces pupil images rotation on the wavefront sensors: the projection of the deformable mirrors on the sensor consequently change. The proper adjustment of the control matrix will be applied in real-time through numerical computation of the new matrix. In this paper we investigate the temporal and computational aspects related to the pupils rotation, explicitly computing the wave-front errors that may be generated.

Paper Details

Date Published: 15 July 2010
PDF: 6 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77364J (15 July 2010); doi: 10.1117/12.857347
Show Author Affiliations
Carmelo Arcidiacono, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Osservatorio Astronomico di Padova (Italy)
Thomas Bertram, Max-Planck-Institut für Astronomie (Germany)
Roberto Ragazzoni, INAF, Osservatorio Astronomico di Padova (Italy)
Jacopo Farinato, INAF, Osservatorio Astronomico di Padova (Italy)
Simone Esposito, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Armando Riccardi, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Enrico Pinna, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Alfio Puglisi, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Luca Fini, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Marco Xompero, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Lorenzo Busoni, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Fernando Quiros-Pacheco, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Runa Briguglio, 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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