2007/08/30
New images obtained with new xCCD camera: He I (10830), Ca K.

2006/10/26
Update X-ray flare index Database (XFI) & Nx index DataBase for solar cycles 21, 22 and 23

2006/07/25
New Images.

2005/04/23
Database X-ray flare index (XFI) for solar cycles 21, 22 and 23

2005/04/15
Our Researches: X-ray flare index (XFI) for solar cycles 21, 22 and 23.

2005/04/09
Photos of Spectroheliograph

2005/03/30
Image processing has been improved.

2002/06/22
Some bugs are fixed. Images DataBase page has been updated.

2002/06/13
Image H10 (in equivalent width).

2002/05/15
We observe solar chromosphere with 2-dimentional CCD now! Image He I 10830A (in equivalent width).

Space weather from n3kl.org:

Solar X-rays:

Geomagnetic Field: