Observations of the Sun in Japan

In addition to NAOJ, observations of the Sun in Japan are conducted at various locations by educational and research institutions, public astronomical observatories, and amateur astronomers. The targets of these observations include sunspots, flares, prominences, etc. Continuous observations over a long period of time using the same equipment and techniques provide valuable data for studying changes in solar activity. This page provides a list of solar observers and institutios who have provided data or information to NAOJ.

Observers

Individuals

Ken'ichi Fujimori (Suwa, Nagano Prefecture; 1954 - 2021. Mr.Fujimori passed away on May 16, 2024 at age 89)

Miyoshi Suzuki (Suzuka, Mie Prefecture)

　　

Observatories, Museums

Nayoro Observatory Kitasubaru [external link: web site, sunspot data (2011 - present)]

Asahikawa Science Museum SciPal [external link: web site, sunspot data (2020 - present)]

Sendai Astronomical Observatory [external link: web site, sunspot data]

Kawaguchi Science Museum [external link: web site, sunspot data (1972 - 2010)]

National Science Museum [external link: web site, sunspot data (by Hisako Koyama, 1947 - 1996)]

Astronomical Observatory, Graduate School of Science, Kyoto University [external link: web site, sunspot data (2004 - present)]