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Sardinia Radio Telescope

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).

Sardinia Radio Telescope
Innaugurazione SRT.JPG
Location(s)San Basilio, Sardinia, Italy Edit this at Wikidata
Coordinates39°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 Edit this at Wikidata
OrganizationINAF Edit this on Wikidata
Altitude600 m (2,000 ft) Edit this at Wikidata
Telescope styleRadio telescope Edit this on Wikidata
Diameter64 m (210 ft 0 in) Edit this at Wikidata Edit this at Wikidata
Sardinia Radio Telescope is located in Italy
Sardinia Radio Telescope
Location of Sardinia Radio Telescope

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


  • 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.[permanent dead link]
  • 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.

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