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Proceedings Paper

Preliminary design for an enclosure for the European Extremely Large Telescope
Author(s): Gaizka Murga; Armando Bilbao; Alberto Vizcargüenaga; Alberto Fernández; Amaia Zarraoa; Michael Schneermann
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Paper Abstract

The baseline design for the enclosure of the E-ELT is based on a spherical dome concept. This dome is tightly fitted to the TRV so that its surface, the enclosed volume and consequently the system overall cost are minimized. The large slit that is required for observation-as compared to the enclosure volume-, much larger than in smaller telescopes, poses a big challenge to the design. This affects the slit covering system design, for which dynamic issues must be carefully considered in order to prevent operation problems, as well as the dome structure and other mechanisms such as the windscreen and the crane, that have to cover a large 45m span. This paper presents a design that solves all these difficulties in both a cost-effective and reliable way. The design work presented in this paper has been performed under contract with the European Southern Observatory.

Paper Details

Date Published: 10 July 2008
PDF: 12 pages
Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 70121C (10 July 2008); doi: 10.1117/12.788939
Show Author Affiliations
Gaizka Murga, IDOM (Spain)
Armando Bilbao, IDOM (Spain)
Alberto Vizcargüenaga, IDOM (Spain)
Alberto Fernández, IDOM (Spain)
Amaia Zarraoa, IDOM (Spain)
Michael Schneermann, ESO (Germany)


Published in SPIE Proceedings Vol. 7012:
Ground-based and Airborne Telescopes II
Larry M. Stepp; Roberto Gilmozzi, Editor(s)

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