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Proceedings Paper

Integrated modeling of the Canadian Very Large Optical Telescope
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Paper Abstract

We describe the VLOT integrated model, which simulates the telescope optical performance under the influence of external disturbances including wind. Details of the implementation in the MATLAB/SIMULINK environment are given, and the data structures are described. The structural to optical interface is detailed, including a discussion of coordinate transformations. The optical model includes both an interface with ZEMAX to perform raytracing analysis and an efficient Linear Optics Model for producing telescope optical path differences from within MATLAB. An extensive set of optical analysis routines has been developed for use with the integrated model. The telescope finite element model, state-space formulation and the high fidelity 1500 mode modal state-space structural dynamics model are presented. Control systems and wind models are described. We present preliminary results, showing the delivered image quality under the influence of wind on the primary mirror, with and without primary mirror control.

Paper Details

Date Published: 7 July 2004
PDF: 10 pages
Proc. SPIE 5382, Second Backaskog Workshop on Extremely Large Telescopes, (7 July 2004); doi: 10.1117/12.566206
Show Author Affiliations
Scott C. Roberts, National Research Council (Canada)
John Stanley Pazder, National Research Council (Canada)
Joeleff T. Fitzsimmons, National Research Council (Canada)
Glen Herriot, National Research Council (Canada)
Nathan Loewen, AMEC Dynamic Structures Ltd. (Canada)
Malcolm J. Smith, National Research Council (Canada)
Jennifer Dunn, National Research Council (Canada)
Leslie K. Saddlemyer, National Research Council (Canada)

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

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