Pulsating AR4392
Taken by David Wilson on March 19, 2026 @ Inverness, Scotland
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This is sunspot 4392 with its centre pulsing away with umbral flashes. First video is the entire active region and the second is a crop of the sunspot on its own. Both play at 900x real time.
Photographer's website:
https://tinyurl.com/5d83mn5j
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