System overview of the Multi conjugated Adaptive Optics RelaY for the E-ELT

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

doi:10.1117/12.858128

27 July 2010 System overview of the Multi conjugated Adaptive Optics RelaY for the E-ELT

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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Proceedings Volume 7736, Adaptive Optics Systems II; 77362Z (2010) https://doi.org/10.1117/12.858128
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

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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, and Norbert Hubin "System overview of the Multi conjugated Adaptive Optics RelaY for the E-ELT", Proc. SPIE 7736, Adaptive Optics Systems II, 77362Z (27 July 2010); https://doi.org/10.1117/12.858128

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KEYWORDS

Adaptive optics

Stars

Telescopes

Mirrors

Relays

Deformable mirrors

Sodium

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