AR4549
Taken by David Wilson on October 8, 2026 @
Inverness, Scotland
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Details:
More action from AR4549 today. All 4 main sunspots are pulsing with umbral flashes as analysed in the second video. The upper 2 are pulsing with a period of 87 seconds and the bottom 2 with 109 seconds. Maybe because the 2 pairs are linked together? Playback is 900x real time.
Photographer's website:
https://starrydave.boards.net
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