Several sunspot groups with active areas. Many eruptions
have occurred from these areas in the days, some strong, and have now created
auroras as far south as +36 New Mexico. Here in Sweden it is far too bright
right now for us to be able to see any auroras. Today's images were taken with
CaK filter 394 nm which is in the border area between the photosphere, which is
visible in white light, and the sun's chromosphere, which is reserved for
narrow-band H-alpha filters. In addition to the structures known from white
light, such as sunspots, the network of chromospheric flares distributed over
the entire solar surface also becomes visible, which precedes the formation of
sunspots, as well as supergranulation cells and Ellerman bombs.
