- 2019 - 2023 Study in physical process of the solar photosphere-chromosphere coupling using 1.5 m aperture diffraction-limited observations
- 2012 - 2014 Development of Ultra-Precision X-ray Mirror towards Future Solar Observations
- 2007 - 2009 Study of Dynamical Phenomena in the Solar Chromosphere using Two-Dimensional Spectro-Polarimetric Observations
- 2004 - 2006 Development of an Adaptive Optics System for the Solar Observation
- 1999 - 2001 Simultaneous Observation of Multiple Temprature Components of the Solar Corona with a Mirror Coronagraph
- 1997 - 2000 Study of Active Phenomena in the Solar Chromosphere and Corona using High-Speed Microlens-Array Spectrograph
- 1996 - 1996 Magnetic Field Evolution and Solar Flares
- 1993 - 1994 Observations of Solar Eclipse in South America on Nov.3,1994
- 1993 - 1993 Solar Physics in High Spatial Resolution
- 1991 - 1993 High-Resolution, High-Precision Observation of Solar X-Ray Images
- 1992 - 1992 Solar Physics on High Spatial Resolution
- 1990 - 1991 Observations of Solar Corona at the Mexico Total Solar Eclipse of July 11, 1991
- 1989 - 1991 UK-Japan Cooperative Study of Solar Flares with the SOLAR-A Spacecraft
- 1990 - 1990 Study of Active Phenomena and Magnetic Fiflds on the Sun.
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