Integrated modeling of the Canadian Very Large Optical Telescope

Scott C. Roberts; John Stanley Pazder; Joeleff T. Fitzsimmons; Glen Herriot; Nathan Loewen; Malcolm J. Smith; Jennifer Dunn; Leslie K. Saddlemyer

doi:10.1117/12.566206

7 July 2004 Integrated modeling of the Canadian Very Large Optical Telescope

Scott C. Roberts, John Stanley Pazder, Joeleff T. Fitzsimmons, Glen Herriot, Nathan Loewen, Malcolm J. Smith, Jennifer Dunn, Leslie K. Saddlemyer

Author Affiliations +

Proceedings Volume 5382, Second Backaskog Workshop on Extremely Large Telescopes; (2004) https://doi.org/10.1117/12.566206
Event: Second Backaskog Workshop on Extremely Large Telescopes, 2003, Backaskog, Sweden

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.

Citation Download Citation

Scott C. Roberts, John Stanley Pazder, Joeleff T. Fitzsimmons, Glen Herriot, Nathan Loewen, Malcolm J. Smith, Jennifer Dunn, and Leslie K. Saddlemyer "Integrated modeling of the Canadian Very Large Optical Telescope", Proc. SPIE 5382, Second Backaskog Workshop on Extremely Large Telescopes, (7 July 2004); https://doi.org/10.1117/12.566206

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