Sardinia Radio Telescope

Sardinia Radio Telescope

Location(s)	San Basilio , Italy
Coordinates	39°29′35″N 9°14′43″E / 39.493044°N 9.245197°E / 39.493044; 9.245197Coordinates: 39°29′35″N 9°14′43″E / 39.493044°N 9.245197°E / 39.493044; 9.245197
Diameter	64 m (210 ft 0 in)
Website	www.srt.inaf.it
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The Sardinia Radio Telescope (SRT) is a large, fully steerable radio telescope completed in 2011, near San Basilio, province of Cagliari in Sardinia, Italy. It is a collaboration among the Istituto di Radioastronomia di Bologna, the Cagliari Observatory (Cagliari) and the Arcetri Astrophysical Observatory (Florence).

The main technical points are:

• A 64 meter primary mirror with a 7.9 meter secondary;
• A Gregorian configuration with shaped surfaces
• An active surface: Primary mirror adjustable with 1116 actuators;
• 0.3–115 GHz continuous frequency coverage
• Three main focal points: Primary, Gregorian, and Beam Wave Guide
• Primary surface accuracy: ≈150 μm RMS
• Maximum antenna efficiency: ≈60 %
• Pointing accuracy (RMS): 2-5 arcsec

Sources

• Gavril Grueff; Giovanni Alvito; Roberto Ambrosini; Pietro Bolli; et al. (2004-10-11). "Sardinia Radio Telescope: the new Italian project". Proceedings of the SPIE. SPIE. 5489 (773): 773. doi:10.1117/12.550332. 
• Cortes-Medellin, G. (2002). "The 64 m Sardinia radio telescope optics design". Antennas and Propagation Society International Symposium, 2002. IEEE. 4. pp. 126–139. doi:10.1109/APS.2002.1016944. 

External links

• "Sardinia Radio Telescope".  Home page of the telescope.
• "Sardinia Radio Telescope: Project Status" (PDF). July 2007. Retrieved 2008-10-23.