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Proceedings Paper

System overview of the Multi conjugated Adaptive Optics RelaY for the E-ELT
Author(s): Italo Foppiani; Emiliano Diolaiti; Andrea Baruffolo; Valdemaro Biliotti; Giovanni Bregoli; Giuseppe Cosentino; Bernard Delabre; Matteo Lombini; Enrico Marchetti; Pierfrancesco Rossettini; Laura Schreiber; Raffaele Tomelleri; Jean-Marc Conan; Sandro D'Odorico; Norbert Hubin
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Paper Abstract

MAORY, the Multi-conjugated Adaptive Optics RelaY for the European Extremely Large Telescope, will be located on one of the Nasmyth platforms of the telescope to provide multi conjugated adaptive optics correction of the wavefront. The scientific instruments fed by the module will benefit from a corrected field of view of 2 arcmin diameter with high performance uniformity across the field. The two post-focal deformable mirrors are projected at high altitude by the optical system based on 5 mirrors and one dichroic which splits the laser light of the artificial reference stars from the science channel. The third deformable mirror, conjugated to the ground, is integrated into the telescope. Six laser guide stars are foreseen in order to measure the wavefront distortions and three natural guide stars are used to solve the tip-tilt indetermination problem. The natural guide stars wavefront sensors are located close to the output focal plane in order to minimize the non common path aberrations. Two output ports are foreseen: one gravity invariant located below the optical bench and one on one side of the bench to feed large instruments placed on the Nasmyth platform.

Paper Details

Date Published: 27 July 2010
PDF: 8 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77362Z (27 July 2010); doi: 10.1117/12.858128
Show Author Affiliations
Italo Foppiani, Univ. degli Studi di Bologna (Italy)
Emiliano Diolaiti, INAF-Osservatorio Astronomico di Bologna (Italy)
Andrea Baruffolo, INAF-Osservatorio Astronomico di Padova (Italy)
Valdemaro Biliotti, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Giovanni Bregoli, INAF-Osservatorio Astronomico di Bologna (Italy)
Giuseppe Cosentino, Univ. degli Studi di Bologna (Italy)
Bernard Delabre, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Matteo Lombini, INAF-Osservatorio Astronomico di Bologna (Italy)
Enrico Marchetti, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Pierfrancesco Rossettini, Tomelleri srl (Italy)
Laura Schreiber, Univ. degli Studi di Bologna (Italy)
Raffaele Tomelleri, Tomelleri srl (Italy)
Jean-Marc Conan, ONERA (United States)
Sandro D'Odorico, European Organisation for Astronomical Research in the Southern Hemisphere (Germany)
Norbert Hubin, 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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