Solar Eruption – April 3, 2017

A lovely session with the Sun today, both in H-alpha and in white-light. Two large and very active sunspot groups are still visible, one of which (named 2644) released a small eruption just as I was acquiring images.

Equipment: TS 115mm F/7 Refractor, Quark H-alpha filter, ASI 174MM, 700/2500 frames. Seeing 6/10.

flare april 3.jpg

April 3 flare.jpg

A comparison of the white light view and the H-alpha one:

H ALPHA VS WHITE LIGHT.jpg

A short animation spanning 27 minutes, showing the evolution of the small eruption and the plasma traveling along the magnetic field lines:

eruption april 3.gif

A filmstrip from the above animation:

evolution.jpg

And an image of AR 2645, the largest of the two sunspot groups visible on the Sun these days:

ar 2645 april 3.jpg

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