On May 10, I made some images of sunspot AR3664. This huge sunspot (2400MH) was very active with M and X flares. The resulting CME's are responsible for a fantastic live aurora show above Belgium and many other countries.
Setting:
SolarMax III 70/400 f/5.7 with ASI290MM
Reducer x0.5
Lights : Exposure time 0.675ms, 82 fps, 3000 frames
Use of flats.
Software : SharpCap 4.1, AstroSurface, CS4
