Over the last few years, the ESO’s ELT has made tremendous progress in defining and procuring the many components of one of the future world largest optical-infrared telescopes. More than two dozen large scale contracts have been placed to industry to design and manufacture several items, among them the dome, the telescope structure, the mirrors and their supports, the control system, the infrastructure, and more. In addition, four agreements were signed with consortia of astronomical research institutes to develop the first suite of scientific instruments. As of today, this represents a financial commitment of more than 90% of the total ESO material budget for the ELT.
Roberto Tamai, Bertrand Koehler, Michele Cirasuolo, Fabio Biancat-Marchet, Mauro Tuti, and Juan Carlos Gonzáles Herrera, "The ESO's ELT construction status," Proc. SPIE 10700, Ground-based and Airborne Telescopes VII, 1070014 (Presented at SPIE Astronomical Telescopes + Instrumentation: June 13, 2018; Published: 6 July 2018); https://doi.org/10.1117/12.2309515.
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