Numerical control matrix rotation for the LINC-NIRVANA Multi-Conjugate Adaptive Optics system
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.
Cite
@article{arxiv.1008.4475,
title = {Numerical control matrix rotation for the LINC-NIRVANA Multi-Conjugate Adaptive Optics system},
author = {Carmelo Arcidiacono and Thomas Bertram and Roberto Ragazzoni and Jacopo Farinato and Simone Esposito and Armando Riccardi and Enrico Pinna and Alfio Puglisi and Luca Fini and Marco Xompero and Lorenzo Busoni and Fernando Quiros-Pacheco and Runa Briguglio},
journal= {arXiv preprint arXiv:1008.4475},
year = {2010}
}
Comments
6 pages, 2 figures, presented at SPIE Symposium "Astronomical Telescopes and Instrumentation'' conference "Adaptive Optics Systems II'',Sunday 27 June 2010, San Diego, California, USA