Kanzelhoehe Solar Observatory

The Kanzelhoehe Solar Observatory or KSO is an astronomical observatory affiliated with the Institute of Geophysics, Astrophysics and Meteorology out of the University of Graz. It is located near Villach on the southern border of Austria.

Its Web page usually posts current images of the sun, especially in the hydrogen-alpha line that is the strongest visible-light line of hydrogen and that reveals the solar chromosphere.