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Proceedings Paper

Conceptual design and performance of the multiconjugate adaptive optics module for the European Extremely Large Telescope
Author(s): Emiliano Diolaiti; Jean-Marc Conan; Italo Foppiani; Enrico Marchetti; Andrea Baruffolo; Michele Bellazzini; Giovanni Bregoli; Christopher R. Butler; Paolo Ciliegi; Giuseppe Cosentino; Bernard Delabre; Matteo Lombini; Cyril Petit; Clélia Robert; Pierfrancesco Rossettini; Laura Schreiber; Raffaele Tomelleri; Valdemaro Biliotti; Sandro D'Odorico; Thierry Fusco; Norbert Hubin; Serge Meimon
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Paper Abstract

The Multi-conjugate Adaptive Optics RelaY (MAORY) for the European Extremely Large Telescope (E-ELT) provides a corrected field of view of up to 2 arcmin diameter over the wavelength range 0.8-2.4 μm. It is expected to achieve a correction of high quality and uniformity with high sky coverage: with a seeing of 0.8 arcsec in the visible, the expected Strehl Ratio averaged over a 1 arcmin field is approximately 50% at 2.16 μm wavelength over 50% of the sky at the Galactic Pole. Wavefront correction is obtained by means of the E-ELT adaptive mirrors M4/M5 and of two post-focal deformable mirrors conjugated at 4km and 12.7km from the telescope pupil. Wavefront sensing is performed by 6 Sodium laser guide stars and by 3 natural guide stars, used to measure atmospheric and windshake tilt and to provide a reference for the focus and for the low-order aberrations induced by the Sodium layer. MAORY is located on the E-ELT Nasmyth platform and has a gravity invariant port, feeding the high angular resolution camera MICADO, and a lateral port for a detached instrument as the infrared spectrograph SIMPLE.

Paper Details

Date Published: 27 July 2010
PDF: 9 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77360R (27 July 2010); doi: 10.1117/12.857634
Show Author Affiliations
Emiliano Diolaiti, INAF-Osservatorio Astronomico di Bologna (Italy)
Jean-Marc Conan, ONERA (France)
Italo Foppiani, INAF-Osservatorio Astronomico di Bologna (Italy)
Univ. degli Studi di Bologna (Italy)
Enrico Marchetti, European Organization for Astronomical Research in the Southern Hemisphere (Germany)
Andrea Baruffolo, INAF-Osservatorio Astronomico di Padova (Italy)
Michele Bellazzini, INAF-Osservatorio Astronomico di Bologna (Italy)
Giovanni Bregoli, INAF-Osservatorio Astronomico di Bologna (Italy)
Christopher R. Butler, INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica (Italy)
Paolo Ciliegi, INAF-Osservatorio Astronomico di Bologna (Italy)
Giuseppe Cosentino, Univ. degli Studi di Bologna (Italy)
Bernard Delabre, European Organization for Astronomical Research in the Southern Hemisphere (Germany)
Matteo Lombini, INAF-Osservatorio Astronomico di Bologna (Italy)
Univ. degli Studi di Bologna (Italy)
Cyril Petit, ONERA (France)
Clélia Robert, ONERA (France)
Pierfrancesco Rossettini, Tomelleri s.r.l. (Italy)
Laura Schreiber, Univ. degli Studi di Bologna (Italy)
Raffaele Tomelleri, Tomelleri s.r.l. (Italy)
Valdemaro Biliotti, INAF-Osservatorio Astrofisico di Arcetri (Italy)
Sandro D'Odorico, European Organization for Astronomical Research in the Southern Hemisphere (Germany)
Thierry Fusco, ONERA (France)
Norbert Hubin, European Organization for Astronomical Research in the Southern Hemisphere (Germany)
Serge Meimon, ONERA (France)


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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