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Proceedings Paper

8s, a numerical simulator of the challenging optical calibration of the E-ELT adaptive mirror M4
Author(s): Runa Briguglio; Giorgio Pariani; Marco Xompero; Armando Riccardi; Matteo Tintori; Paolo Lazzarini; Paolo Spanò
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Paper Abstract

8s stands for Optical Test TOwer Simulator (with 8 read as in italian 'otto'): it is a simulation tool for the optical calibration of the E-ELT deformable mirror M4 on its test facility. It has been developed to identify possible criticalities in the procedure, evaluate the solutions and estimate the sensitivity to environmental noise. The simulation system is composed by the finite elements model of the tower, the analytic influence functions of the actuators, the ray tracing propagation of the laser beam through the optical surfaces. The tool delivers simulated phasemaps of M4, associated with the current system status: actuator commands, optics alignment and position, beam vignetting, bench temperature and vibrations. It is possible to simulate a single step of the optical test of M4 by changing the system parameters according to a calibration procedure and collect the associated phasemap for performance evaluation. In this paper we will describe the simulation package and outline the proposed calibration procedure of M4.

Paper Details

Date Published: 27 July 2016
PDF: 11 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99097A (27 July 2016); doi: 10.1117/12.2231634
Show Author Affiliations
Runa Briguglio, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Giorgio Pariani, INAF - Osservatorio Astronomico di Brera (Italy)
Marco Xompero, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Armando Riccardi, INAF - Osservatorio Astrofisico di Arcetri (Italy)
Matteo Tintori, A.D.S. International S.r.l. (Italy)
Paolo Lazzarini, A.D.S. International S.r.l. (Italy)
Paolo Spanò, INAF - Osservatorio Astrofisico di Arcetri (Italy)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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