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13 September 2012 Wavefront sensor design for the GMT natural guide star AO system
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Abstract
The paper presents the preliminary design of theNat ural Guide Star Wavefront Sensor for the single conjugate AO system of the GMT telescope. The NGS Wavefront Sensor (NGWS), already identified as a pyramid sensor, will be in charge of the entire wavefront error measurement namely atmospheric turbulence and telescope aberrations, including the segment differential piston error. The paper describes the WFS opto-mechanical design with particular emphasis on the WFS board. Numerical simulations of the GMT NGS AO system are performed taking into account the main characteristics of the considered WFS unit. The simulations take into account correction of the atmospheric perturbation and control of the differential pistons of the GMT segments.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Esposito, E. Pinna, F. Quirós-Pacheco, A. T. Puglisi, L. Carbonaro, M. Bonaglia, V. Biliotti, R. Briguglio, G. Agapito, C. Arcidiacono, L. Busoni, M. Xompero, A. Riccardi, L. Fini, and A. Bouchez "Wavefront sensor design for the GMT natural guide star AO system", Proc. SPIE 8447, Adaptive Optics Systems III, 84471L (13 September 2012); doi: 10.1117/12.927158; https://doi.org/10.1117/12.927158
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