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15 July 2010 Numerical control matrix rotation for the LINC-NIRVANA multiconjugate adaptive optics system
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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.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Carmelo Arcidiacono, Thomas Bertram, Roberto Ragazzoni, Jacopo Farinato, Simone Esposito, Armando Riccardi, Enrico Pinna, Alfio Puglisi, Luca Fini, Marco Xompero, Lorenzo Busoni, Fernando Quiros-Pacheco, and Runa Briguglio "Numerical control matrix rotation for the LINC-NIRVANA multiconjugate adaptive optics system", Proc. SPIE 7736, Adaptive Optics Systems II, 77364J (15 July 2010);

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