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13 September 2012 Numerical modeling and simulation studies for the M4 adaptive mirror of the E-ELT
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We report in this paper on the progress of numerical modeling and simulation studies of the M4 adaptive mirror, a representative of the "adaptive secondary mirrors" technology, for the European Extremely Large Telescope (E-ELT). This is based on both dedicated routines and the existing code of the Software Package CADS. The points approached are basically the specific problems encountered with this particular type of voice-coil adaptive mirrors on the E-ELT: (*) the segmentation of the adaptive mirror, implying a fitting error due also to the edges of its six petals, as well as possible co-phasing problems to be evaluated in terms of interaction with the wavefront sensor (a pyramid here); (**) the necessary presence of "master" and "slave" actuators which management, in terms of wavefront reconstruction, implies to consider different strategies. The on-going work being performed for the two above points is described in details, and some preliminary results are given.
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Marcel Carbillet, Armando Riccardi, and Marco Xompero "Numerical modeling and simulation studies for the M4 adaptive mirror of the E-ELT", Proc. SPIE 8447, Adaptive Optics Systems III, 844762 (13 September 2012);

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