13 September 2012 Optical calibration and testing of the E-ELT M4 adaptive mirror
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Innovative optical interferometry test setups and control software techniques have been proposed for the E-ELT M4 adaptive optics mirror. The system is composed of three sub-systems: a CGH-based optical test tower, delivering a 1.5- m collimated beam, for fast simultaneous acquisition of large areas; a stitching interferometer, to calibrate at higher spatial frequencies, on smaller areas; and an optical piston sensor to remove differential piston and tilt between adjacent mirror segments.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Spanò, P. Spanò, A. Bianco, A. Bianco, R. Briguglio, R. Briguglio, M. Cecconi, M. Cecconi, L. Miglietta, L. Miglietta, E. Molinari, E. Molinari, G. Pariani, G. Pariani, A. Riccardi, A. Riccardi, M. Riva, M. Riva, D. Tresoldi, D. Tresoldi, M. Xompero, M. Xompero, F. Zerbi, F. Zerbi, } "Optical calibration and testing of the E-ELT M4 adaptive mirror", Proc. SPIE 8447, Adaptive Optics Systems III, 84473O (13 September 2012); doi: 10.1117/12.926008; https://doi.org/10.1117/12.926008

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