Y. Hanaoka
The National Astronomical Observatory of Japan has been conducting synoptic solar observation for about 100 years, and we, the Solar Observatory, are still operating some traditional observations such as sunspot counts and full-disk imagings. However, now we are focusing on more advanced observations. For instance, currently we are operating a full-Sun, full-Stokes near-infrared spectropolarimeter. Its observation wavelength range includes the He I 10830/Si I 10827 lines and the Fe I 15648 line, and the photospheric and the chromospheric magnetic field data are obtained simultaneously. Although the observation is synoptic type, the obtained data are not just for the monitoring of Sun; the data are expected to contribute to understanding magnetic field evolution of the eruptive phenomena. To advance the observation further, now we are developing a new infrared camera and are planning to have a new telescope.
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