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Proceedings Paper

Integrated modeling of the Euro50
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Paper Abstract

The Euro50 is a proposed 50 m optical and infrared telescope. It will have thousands of control loops to keep the optics aligned under influence of wind, gravity and thermal loads. Cross-disciplinary integrated modeling is used to study the overall performance of the Euro50. A sub-model of the mechanical structure originates from finite element modeling. The optical performance is determined using ray tracing, both non-linear and linearized. The primary mirror segment alignment control system is modeled with the 618 segments taken as rigid bodies. Adaptive optics is included using a layered model of the atmosphere and sub-models of the wavefront sensor, reconstructor and controller. The deformable mirror is, so far, described by a simple influence function and a second order dynamical transfer function but more detailed work is in progress. The model has been implemented using Matlab/Simulink on individual computers but it will shortly be implemented on a Beowulf cluster within a trusted network. Communication routines between Matlab on the cluster processors have been written and are being benchmarked. Representative results from the simulations are shown.

Paper Details

Date Published: 7 July 2004
PDF: 13 pages
Proc. SPIE 5382, Second Backaskog Workshop on Extremely Large Telescopes, (7 July 2004); doi: 10.1117/12.566232
Show Author Affiliations
Torben E. Andersen, Lund Observatory (Sweden)
Michael T. Browne, National Univ. of Ireland/Galway (Ireland)
Anita Enmark, Lund Observatory (Sweden)
Dan Moraru, Lund Observatory (Sweden)
Mette Owner-Petersen, Lund Observatory (Sweden)
Holger Riewaldt, Lund Observatory (Sweden)

Published in SPIE Proceedings Vol. 5382:
Second Backaskog Workshop on Extremely Large Telescopes
Arne L. Ardeberg; Torben Andersen, Editor(s)

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