Status of the Feasibility Study of E-ELT, the ESO 42m Extreme Large Telescope, with emphasis on the Telescope
architecture, manufacturing and erection.
The new generation of Extremely Large Telescope, requires the identification of different technologies, in order to
improve the stiffness to weight ratio of the structure, to introduce higher damping while maintaining under control the
construction and maintenance costs.
The identification of different construction technologies and the consequent development of the materials used, may
allow to obtain a leading technological instrument able to meet also the most extreme scientific request, able to adapt to
the new requests that might be raised along the life of the telescope.
The control of the weight of the structure is extremely important for the dimensioning of the auxiliary structures, for
energy management, and for the problems related to pre-assembly, disassembly in factory and erection on site.