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Proceedings Paper

Preliminary design of the post focal relay of the MCAO module for the E-ELT
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Paper Abstract

MAORY, the multi-conjugate adaptive optics module for the E-ELT, is supposed to be placed in one of the two Nasmyth platforms of the telescope, re-imaging the focal plane with a diffraction limited image quality. The requested operating wavelength is from 0.6 to 2.4μm with a high throughput. The module will include a natural guide stars wave front sensor (NGS WFS) and a laser guide stars WFS (LGS WFS) and will feed at least two scientific instruments with a corrected field of view up to 2 arcmin, providing a mechanical de-rotation for the light instruments attached (< 4tons). We present below a preliminary optical design of the post focal relay taking count of the required performance. A particular attention is paid to the critical aspects such as the pupil de-rotation, the light splitting between the WFSs and the scientific channel and the deformable mirrors (DMs) optical parameters and dimensioning.

Paper Details

Date Published: 15 July 2008
PDF: 7 pages
Proc. SPIE 7015, Adaptive Optics Systems, 70155U (15 July 2008); doi: 10.1117/12.788921
Show Author Affiliations
Matteo Lombini, INAF - Osservatorio Astronomico di Bologna (Italy)
Emiliano Diolaiti, INAF - Osservatorio Astronomico di Bologna (Italy)
Italo Foppiani, Univ. di Bologna (Italy)
Laura Schreiber, Univ. di Bologna (Italy)
Enrico Marchetti, European Southern Observatory (Germany)
Bernard Delabre, European Southern Observatory (Germany)

Published in SPIE Proceedings Vol. 7015:
Adaptive Optics Systems
Norbert Hubin; Claire E. Max; Peter L. Wizinowich, Editor(s)

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