SRT: design and technical specifications

The Sardinia Radio Telescope (SRT) is a general purpose, fully steerable radio telescope currently being built in Sardinia, that will be operated by the National Institute for Astrophysics (INAF). The SRT will be a large-aperture antenna (64-m diameter) with a classical Gregorian configuration and the possibility to use three different focal positions. The primary and secondary reflectors are shaped to minimize spillover and the standing waves between the feed and the subreflector. The primary active surface will give the SRT the possibility to operate in the 3-mm band, and will thus contribute significantly to many science areas. At present, the foundation of the antenna is almost complete, and the components of the alidade and of the track are under construction.