Nobeyama radio observatory
Nobeyama radio observatory in 2009 | |
| Organization | |
|---|---|
| Location | Minamimaki, Minamisaku District, Nagano Prefecture, Japan |
| Coordinates | 35°56′30″N 138°28′33″E / 35.9417°N 138.4758°E |
| Altitude | 1,350 m (4,430 ft) |
| Website | www |
| Telescopes |
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Location of Nobeyama radio observatory | |
| Related media on Commons | |
The Nobeyama Radio Observatory (NRO) is an astronomical observatory located near Minamimaki, Nagano, Japan at an elevation of 1350 metres. It is a division of the National Astronomical Observatory of Japan (NAOJ) and consists of four radio instruments.[1]
- The 45-m Radio Telescope: A 45-m single-dish radio telescope that operates in short-millimetre wavelengths. Its receivers operate at 1, 2, 3.75, 9.4, 17, 35, and 80 GHz in both left and right polarizations.[2]
- The Nobeyama Millimetre Array (NMA): A millimetre interferometer consisting of six 10-m diameter telescopes.[3]
- The Nobeyama Radioheliograph (NoRH): An array of eighty-four, 80 cm antennas dedicated to solar observations. Their receivers operate at 17–34 GHz in both left and right polarizations.[4][5][6]
- The Nobeyama Radio Polarimeters: A set of radio telescopes that continuously observes the full Sun at the frequencies of 1, 2, 3.75, 9.4, 17, 35, and 80 GHz, at left and right circular polarization.[7][8][9]
References
- ^ "Information of Telescopes". Nobeyama Radio Observatory. Retrieved 16 December 2025.
- ^ Ukita, N.; Tsuboi, H. (May 1994). "A 45-m telescope with a surface accuracy of 65 μm". Proceedings of the IEEE. 82 (5): 725–733. Bibcode:1994IEEEP..82..725U. doi:10.1109/5.284739.
- ^ Morita, Koh-Ichiro (1994). "The Nobeyama Millimeter Array". Astronomy with Millimeter and Submillimeter Wave Interferometry. International Astronomical Union Colloquium. Vol. 140. pp. 18–26. doi:10.1017/S0252921100019035.
- ^ "Nobeyama Radioheliograph". Solar Science Observatory. National Astronomical Observatory of Japan. Retrieved 16 December 2025.
- ^ Nakajima, H.; Nishio, M.; Enome, S.; Shibasaki, K.; Takano, T.; Hanaoka, Y.; Torii, C.; Sekiguchi, H.; Bushimata, T.; Kawashima, S.; Shinohara, N.; Irimajiri, Y.; Koshiishi, H.; Kosugi, T.; Shiomi, Y.; Sawa, M.; Kai, K. (May 1994). "The Nobeyama Radioheliograph". Proceedings of the IEEE. 82 (5): 705–713. Bibcode:1994IEEEP..82..705N. doi:10.1109/5.284737.
- ^ Takano, Toshiaki; Nakajima, Hiroshi; Enome, Shinzo; Shibasaki, Kiyoto; Nishio, Masanori; Hanaoka, Yoichiro; Shiomi, Yasuhiko; Sekiguchi, Hideaki; Kawashima, Susumu; Bushimata, Takeshi; Shinohara, Noriyuki; Torii, Chikayoshi; Fujiki, Kenichi; Irimajiri, Yoshihisa (1997). "An Upgrade of Nobeyama Radioheliograph to a Dual-Frequency (17 and 34 GHz) System". In Trottet, Gerard (ed.). Coronal Physics from Radio and Space Observations. CESRA Workshop. Lecture Notes in Physics. Vol. 483. pp. 183–191. Bibcode:1997LNP...483..183T. doi:10.1007/BFb0106457.
- ^ "Nobeyama Radio Polarimeters". Solar Science Observatory. National Astronomical Observatory of Japan. Retrieved 16 December 2025.
- ^ Nakajima, Hiroshi; Sekiguchi, Hideaki; Sawa, Masaki; Kai, Keizo; Kawashima, Susumu; Kosugi, Takeo; Shibuya, Nobutaka; Shinohara, Noriyuki; Shiomi, Yasuhiko (25 March 1985). "The Radiometer and Polarimeters at 80, 35, and 17 GHz for Solar Observations at Nobeyama". Publications of the Astronomical Society of Japan. 37 (1): 163–170. Bibcode:1985PASJ...37..163N. doi:10.1093/pasj/37.1.163.
- ^ Shimojo, Masumi; Iwai, Kazumasa (January 2023). "Over seven decades of solar microwave data obtained with Toyokawa and Nobeyama Radio Polarimeters". Geoscience Data Journal. 10 (1): 114–129. arXiv:2205.07454. Bibcode:2023GSDJ...10..114S. doi:10.1002/gdj3.165.
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