a monster prominence
Taken by Sylvain Chapeland on May 4, 2020 @
Gex, France
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Details:
There was a nice solar activity yesteray, with 3 prominence areas. One of them was really big, but faint.
I tracked it for 2 hours using a 100mm refractor with H-alpha filter, and made a video of the sequence:
https://vimeo.com/414939863
It was wonderful to discover in the result the fine patches of gas moving along the magnetic field lines. I measured some of them speeding at around 100000 mph.
That was a great show, backyard astronomy is definitely a nice way to escape when stuck at home!
Photographer's website:
https://vimeo.com/414939863
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