E-ELT dome for modified baseline design

Armando Bilbao; Gaizka Murga; Celia Gómez

doi:10.1117/12.925130

17 September 2012 E-ELT dome for modified baseline design

Armando Bilbao, Gaizka Murga, Celia Gómez

Proceedings Volume 8444, Ground-based and Airborne Telescopes IV; 84440P (2012) https://doi.org/10.1117/12.925130
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

During the last two years a modified baseline design for the E-ELT was developed. The aim of this revision was both to achieve a significant cost saving and to reduce risk on major items. The primary mirror diameter was slightly reduced to 39 m and the total height of the telescope also decreased accordingly. This paper describes the work performed by IDOM under contract with ESO to review the EELT dome and foundations design to match the modified baseline. Detailed design and construction planning, as well as detailed cost estimates were updated for the 39-metre baseline design. In June 2011, ESO Council formally endorsed this modified design as the E-ELT revised baseline. Key redesign drivers are explained and final redesign details of all major subsystems are outlined. In general, the original compact dome design philosophy is maintained and adapted to the new dimensions. Cost optimisation strategies are applied throughout the detailed design update process. Special attention is also given to some specific new items now included in the modified baseline, such as the special ad-hoc seismic base isolation system for the telescope foundation.

Citation Download Citation

Armando Bilbao, Gaizka Murga, and Celia Gómez "E-ELT dome for modified baseline design", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84440P (17 September 2012); https://doi.org/10.1117/12.925130

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