Sun in h-alpha 15/07/2012
Active region 1520, which gave a nice show on 12th July 2012, is leaving the visible solar disk. Bye, bye!
Just 1h after the big flare (X1.4) I caught this image using only 3s of image data just before clouds took away all view of the sun.
Image of AR1520 about 5 hours before the major X-flare (1.4) on 12th July 2012
Imagery of AR1519/20 taken in between cloud passes on 12th July 2012. This was one of the larger sunspots until now during this year.
Here is an animation of the activity around AR1519 on 06/07/2012 1650-1705 UTC