The International Consortium for the Continued Operation of Nobeyama Radioheliograph (ICCON)

Nobeyama Radioheliograph

Nobeyama Radioheliograph (NoRH) is a radio interferometer specially designed to observe the full disk of the Sun at 17 and 34 GHz. Eighty-four antennas with a diameter of 80 cm were installed along a T-shape baseline (North - South: 250 m, East - West: 500 m). The spatial resolution is about 10 arcseconds and 5 arcseconds in 17 GHz and 34 GHz, respectively. The time resolution of NoRH is typically 1 second and 0.1 second for the event mode. NoRH continuously observes the full sun for about eight hours (22:30 - 6:30 UT) every day. The system has been quite stable and NoRH data are available in the period more than 99 % out of the total possible operational window. The National Astronomical Observatory of Japan (NAOJ) has successfully operated NoRH during these two decades. From April 2015, the Solar-Terrestrial Environment Laboratory, Nagoya University (now Institute for Space-Earth Environmental Research, ISEE) will operate NoRH as a representative of the International Consortium for the Continued Operation of Nobeyama Raidoheliograph (ICCON).


7 July 2017: The schedule of NoRH_CO is updated.
26 June 2017: Paper list related with NoRH since 2015 is newly created.
25 January 2017: A new page 'NoRH Flares with and without CMEs' is open.
9 November 2016: NoRH Science Nuggets is updated.
13 September 2016: The NoRH_CO manual is updated.
6 May 2016: International Meeting
   Solar Physics with Radio Observations - Continued Operation of Nobeyama Radioheliograph -
9 March 2016: Partial Solar Eclipse
   Radio images on March 9, 2016

Images & Movies

NoRH Chief Observer (NoRH_CO)

Data Use Policy

Data are free to use. Anyone can analyze NoRH data at SDAS/NAOJ and at Hinode Science Center at Nagoya. When one wrote a paper using NoRH data taken after April, 2015, he/she should thank ICCON in the Acknowledgement section of the paper.

Samples of Acknowledgements: Data Analysis Manual (PDF)

NoRH Science Nuggets

NoRH Science Nuggets (updated on 9 November 2016)

Paper list

Paper list related with NoRH since 2015

Nobeyama Solar Radio Observatory Bibliography (NAOJ site)

ICCON Representatives


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