15 July 2010 Numerical control matrix rotation for the LINC-NIRVANA multiconjugate adaptive optics system
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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.
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Carmelo Arcidiacono, Carmelo Arcidiacono, Thomas Bertram, Thomas Bertram, Roberto Ragazzoni, Roberto Ragazzoni, Jacopo Farinato, Jacopo Farinato, Simone Esposito, Simone Esposito, Armando Riccardi, Armando Riccardi, Enrico Pinna, Enrico Pinna, Alfio Puglisi, Alfio Puglisi, Luca Fini, Luca Fini, Marco Xompero, Marco Xompero, Lorenzo Busoni, Lorenzo Busoni, Fernando Quiros-Pacheco, Fernando Quiros-Pacheco, Runa Briguglio, 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); doi: 10.1117/12.857347; https://doi.org/10.1117/12.857347
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