The E-ELT project: the dome design study

G. Marchiori; S. De Lorenzi; A. Busatta

doi:10.1117/12.927249

27 September 2012 The E-ELT project: the dome design status

G. Marchiori, S. De Lorenzi, A. Busatta

Proceedings Volume 8444, Ground-based and Airborne Telescopes IV; 84440Q (2012) https://doi.org/10.1117/12.927249
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Further to the re-dimensioning of the E-ELT (European Extremely Large Telescope) telescope to 37 metres, the project of the dome has been completely reviewed, together with the Auxiliary Building and the Foundations. The Dome is now constituted by a structure with a steel hemispherical architecture, 79m.-high, with a 101m.-external pier diameter and a 42m-wide observing slit. These dimensions require the application of technologies for big structures (like stadiums, hangars, etc.) in order to comply with the manufacturing, transport and assembly constrains. The dome is characterized by an agglomerate of mechathronic technologies originated by the long experience matured by EIE in the industrial and astronomical fields. The solutions adopted for the NTT, the VLT, the LBT, the VST and the VISTA have demonstrated, along the years of service, their functionality, as well as their reliability and maintainability. Moreover, innovative technologies have been introduced, especially for what concerns the rotation systems of the Dome, the louvers, the windscreen, etc. The architecture of the control systems has been completed re-formulated, and they are now able to manage in real time all the exigencies of the E-ELT Observatory. All Project phases have been properly analysed and simulated, guaranteeing the completeness of the constructability and the maintainability. The entire work has been developed in close cooperation with ESO Project Team, further to a specific contract.

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G. Marchiori, S. De Lorenzi, and A. Busatta "The E-ELT project: the dome design status", Proc. SPIE 8444, Ground-based and Airborne Telescopes IV, 84440Q (27 September 2012); https://doi.org/10.1117/12.927249

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KEYWORDS

Domes

Telescopes

Control systems

Cladding

Manufacturing

Safety

Observatories

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