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Proceedings Paper

Demonstration prototype and breadboards of the piezo stack M4 adaptive unit of the E-ELT
Author(s): B. Crépy; S. Chaillot; M. Cola; J. M. Conan; R. Cousty; M. Dimmler; J. L. Dournaux; S. De Zotti; E. Gabriel; R. Gasmi; R. Grasser; N. Hubin; P. Jagourel; L. Jochum; F. Locre; P.-Y. Madec; P. Morin; M. Mueller; G. Petit; D. Petitgas; J. J. Roland; J. C. Sinquin; E. Vernet
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Paper Abstract

In order to mitigate the risks of development of the M4 adaptive mirror for the E-ELT, CILAS has proposed to build a demonstration prototype and breadboards dedicated to this project. The objectives of the demonstration prototype concern the manufacturing issues such as mass assembly, integration, control and polishing but also the check the global dynamical and thermal behaviour of the mirror. The local behaviour of the mirror (polishing quality, influence function, print through...) is studied through a breadboard that can be considered as a piece of the final mirror. We propose in this paper to present our breadboard strategy, to define and present our mock-up and to comment the main results and lessons learned.

Paper Details

Date Published: 29 July 2010
PDF: 10 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77365P (29 July 2010); doi: 10.1117/12.856362
Show Author Affiliations
B. Crépy, CILAS (France)
S. Chaillot, BOOSTEC S.A. (France)
M. Cola, AMOS Ltd. (Belgium)
J. M. Conan, ONERA (France)
R. Cousty, CILAS (France)
M. Dimmler, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
J. L. Dournaux, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
S. De Zotti, ASTRIUM (France)
E. Gabriel, AMOS Ltd. (Belgium)
R. Gasmi, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
R. Grasser, CILAS (France)
N. Hubin, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
P. Jagourel, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
L. Jochum, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
F. Locre, CILAS (France)
P.-Y. Madec, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
P. Morin, CILAS (France)
M. Mueller, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
G. Petit, ONERA (France)
D. Petitgas, CILAS (France)
J. J. Roland, CILAS (France)
J. C. Sinquin, CILAS (France)
E. Vernet, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)


Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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