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Proceedings Paper

MAD: the ESO multiconjugate adaptive optics demonstrator
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Paper Abstract

Multi-Conjugate Adaptive Optics (MCAO) is working on the principle to perform wide field of view atmospheric turbulence correction using many Guide Stars located in and/or surrounding the observed target. The vertical distribution of the atmospheric turbulence is reconstructed by observing several guide stars and the correction is applied by some deformable mirrors optically conjugated at different altitudes above the telescope. The European Southern Observatory together with external research institutions is going to build a Multi-Conjugate Adaptive Optics Demonstrator (MAD) to perform wide field of view adaptive optics correction. The aim of MAD is to demonstrate on the sky the feasibility of the MCAO technique and to evaluate all the critical aspects in building such kind of instrument in the framework of both the 2nd generation VLT instrumentation and the 100-m telescope OWL. In this paper we present the conceptual design of the MAD module that will be installed at one of the VLT unit telescope in Paranal to perform on-sky observations. MAD is based on a two deformable mirrors correction system and on two multi-reference wavefront sensors capable to observe simultaneously some pre-selected configurations of Natural Guide Stars. MAD is expected to correct up to 2 arcmin field of view in K band.

Paper Details

Date Published: 7 February 2003
PDF: 12 pages
Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.458859
Show Author Affiliations
Enrico Marchetti, European Southern Observatory (Germany)
Norbert N. Hubin, European Southern Observatory (Germany)
Enrico Fedrigo, European Southern Observatory (Germany)
Joar Brynnel, European Southern Observatory (Germany)
Bernard Delabre, European Southern Observatory (Germany)
Robert Donaldson, European Southern Observatory (Germany)
Francis Franza, European Southern Observatory (Germany)
Rodolphe Conan, European Southern Observatory (Germany)
Miska Le Louarn, European Southern Observatory (Germany)
Cyril Cavadore, European Southern Observatory (Germany)
Andrea Balestra, European Southern Observatory (Germany)
Dietrich Baade, European Southern Observatory (Germany)
Jean-Luis Lizon, European Southern Observatory (Germany)
Roberto Gilmozzi, European Southern Observatory (Germany)
Guy J. Monnet, European Southern Observatory (Germany)
Roberto Ragazzoni, Ossevatorio Astrofisico di Arcetri (Italy)
Carmelo Arcidiacono, Univ. degli Studi di Firenze (Italy)
Andrea Baruffolo, Osservatorio Astronomico di Padova (Italy)
Emiliano Diolaiti, Univ. degli Studi di Padova (Italy)
Jacopo Farinato, Osservatorio Astrofisico di Arcetri (Italy)
Elise Vernet-Viard, Osservatorio Astrofisico di Arcetri (Italy)
David James Butler, Max-Planck-Institut fur Astronomie (Germany)
Stefan Hippler, Max-Planck-Institut fur Astronomie (Germany)
Antonio Amorin, Univ. de Lisboa (Portugal)

Published in SPIE Proceedings Vol. 4839:
Adaptive Optical System Technologies II
Peter L. Wizinowich; Domenico Bonaccini, Editor(s)

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