Sunspot chromosphere
Error
Sunspot observed in Ca II K spectral line
The same sunspot in three different layers
A sunspot observed in multiple spectral lines
The amazing chromosphere above an active region (1/3)
The amazing chromosphere above an active region (2/3)
The amazing chromosphere above an active region (3/3)
A sunspot observed in the chromosphere
A little bit of everything (1/2)
A little bit of everything (2/2)
High above in the chromosphere
[MOVIE] Halpha scan of a sunspot near the limb