Ultraviolet (390nm) image.
White-light image of sunspot 12394.
Sun 01.08.15; white-light photomosaic
Two panel white-light photomosaic.
Ultraviolet (390nm) image
White-light image captured with a 100mm f5 Helios refractor and vesta pro webcam. Motorised EQ1 Mount and Baader solar filter.