Consideration for the Design of the Driving and Bearing System for Large Telescopes

The Astronomers target for the present and the next decade is the construction of large telescopes 3,5 - 4 m. primary mirror diameter and very large telescopes 8 - 9 m. primary mirror diameter, in the array or multi-mirror design, improving at the same time the performance of the instruments compared to the efficiency and precision of the same.