The M7.3 flare peaking at 13:03 UT today was accompanied by a full halo CME first appearing in the SOHO/LASCO C2 field of view at 13:25 UT. The plane-of-the-sky projected speed of the CME was around 900 km/s. The bulk of the CME mass was going to the south-west, so we expect only a glancing blow when the corresponding ICME arrives at the Earth on April 21, resulting in a geomagnetic storm with K index most probably up to 6. The halo CME also produced a proton event at energies above 10 MeV.
Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Time UT: 17:00
Exposure 1/500 sec.
With SPONLI Space is getting closer