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Proceedings Paper

Design solutions for dome and main structure (mount) of giant telescopes
Author(s): Gaizka Murga; Armando Bilbao; Lander de Bilbao; Thomas E. Lorentz
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Paper Abstract

During the last recent years, designs for several giant telescopes ranging from 20 to 40m in diameter are being developed: European Extremely Large Telescope Telescope (TMT). (E-ELT), Giant Magellan Telescope (GMT) and Thirty Meter It is evident that simple direct up-scaling of solutions that were more or less successful in the 8 to 10m class telescopes can not lead to viable designs for the future giant telescopes. New solutions are required to provide adequate load sharing, to cope with the large-scale derived deflections and to provide the required compliance, or to respond to structure-mechanism control interaction issues, among others. From IDOM experience in the development of the Dome and Main Structure of the European Extremely Large Telescope and our participation in some other giant telescopes, this paper reviews several design approaches for the main mechanisms and key structural parts of enclosures and mounts/main structures for giant telescopes, analyzing pros and cons of the different alternatives and outlining the preferred design schemes. The assessment is carried out mainly from a technical and performance-based angle but it also considers specific logistical issues for the assembly of these large telescopes in remote and space-limited areas, together with cost and schedule related issues.

Paper Details

Date Published: 27 July 2016
PDF: 12 pages
Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99060C (27 July 2016); doi: 10.1117/12.2233502
Show Author Affiliations
Gaizka Murga, IDOM Ingenieria y Consultoria S.A. (Spain)
Armando Bilbao, IDOM Ingenieria y Consultoria S.A. (Spain)
Lander de Bilbao, IDOM Ingenieria y Consultoria S.A. (Spain)
Thomas E. Lorentz, IDOM (United States)


Published in SPIE Proceedings Vol. 9906:
Ground-based and Airborne Telescopes VI
Helen J. Hall; Roberto Gilmozzi; Heather K. Marshall, Editor(s)

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