Itapetinga Radio Observatory

The Itapeting Radio Observatory (Portuguese: Rádio Observatório de Itapetinga - ROI) is a radio observatory located in the municipality of Atibaia in the state of São Paulo in Brazil. It is located approximately 7.5 km (4.7 mi) south of Atibaia and 40 km (25 mi) north of São Paulo. ROI was founded in 1970 by Universidade Presbiteriana Mackenzie (UPM).[1] Control of the facility was passed to the National Institute for Space Research (INPE) in 1982.[1] Today it is managed jointly by INPE, UPM, University do Vale do Paraíba (Univap), Universidade de São Paulo (USP), and Universidade Federal de Itajubá (UNIFEI).[2] In addition to the telescopes, the observatory has living quarters for visiting scientists. ROI is located inside a small radio quiet zone.[3]

Itapetinga Radio Observatory
Alternative namesROI 
OrganizationNational Institute for Space Research 
LocationAtibaia, São Paulo, Brazil
Coordinates23°11′07″S 46°33′30″W
Altitude819 m (2,687 ft)
Established1970 
Websitewww.cea.inpe.br/roi/
TelescopesItapetinga Radio Telescope
Solar Patrol Equipment
Solar Radio Polarimeter 
Location of Itapetinga Radio Observatory
Related media on Wikimedia Commons

Telescopes
  • A 13.7 m (45 ft) dish antenna was completed in 1974. It is housed in a radome which was replaced in 1990. It observes in bands from 18 GHz to 26 GHz and 40 GHz to 50 GHz simultaneously.[4] It is used for both astronomical and solar observations.[5][6]
  • The Solar Patrol Equipment (Portuguese: Equipamento de Patrulhamento Solar - SPUA) is an array of 1.5 m (4.9 ft) dish antennas on a common mount. It monitors intensity and linear polarization of radio waves from the Sun at 12 GHz.[4]
  • The Solar Radio Polarimeter (Portuguese: Rádio Polarímetro Solar - RaPoSo) is a 1.5 m (4.9 ft) antenna with two low-noise receivers centered at 7 GHz. It monitors the intensity and circular polarization of radio waves from the Sun.[7] It was originally located at UPM's defunct Umuarama Radio Observatory near Campos do Jordão and is the oldest telescope at ROI.[8][9]

See also

References
  1. "Radiobservatório do Itapetinga - ROI/INPE". Radiobservatório do Itapetinga. Retrieved 2012-08-02.
  2. "Comissão de Usuários". Radiobservatório do Itapetinga. Retrieved 2012-08-02.
  3. "Zona de Silêncio". Radiobservatório do Itapetinga. Retrieved 2012-08-02.
  4. "Instrumentos". Radiobservatório do Itapetinga. Retrieved 2012-08-02.
  5. Giménez de Castro, C. G.; Raulin, J.-P.; Mandrini, C. H.; Kaufmann, P.; Magun, A. (January 2001). "Multi-resolution wavelet analysis of high time resolution millimeter wavelength observations of solar bursts". Astronomy and Astrophysics. 366: 317–325. Bibcode:2001A&A...366..317G. doi:10.1051/0004-6361:20000088.
  6. Tateyama, C. E.; Strauss, F. M. (May 1992). "Centaurus a at 22 and 43 GHz". Monthly Notices of the Royal Astronomical Society. 256: 8–12. Bibcode:1992MNRAS.256....8T. doi:10.1093/mnras/256.1.8.
  7. "Rádio Polarímetro Solar (RaPoSo) - Brasil". Radiobservatório do Itapetinga. Retrieved 2012-08-02.
  8. Kaufmann, Pierre (February 1968). "Solar Physics at Mackenzie University, São, Paulo, Brazil". Solar Physics. 3 (2): 360. Bibcode:1968SoPh....3..360K. doi:10.1007/BF00155173.
  9. Kaufmann, Pierre (June 1971). "The New Itapetinga Radio Observatory, from Mackenzie University, São Paulo, Brasil". Solar Physics. 18 (2): 336. Bibcode:1971SoPh...18..336K. doi:10.1007/BF00145948.
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