2020 October 18 Sun - Solar surface in H-alpha, with AR12775 and AR12776
AR12775 has almost all turned to the backside, and not much is visible in H-alpha.
AR12776 is very active, with bright flares and dark filaments. The sunspot is also visible in H-alpha.
At about 02:50 UTC, the small flare just south of the leading sunspot suddenly brightens. The eruption lasts about 13 minutes and the flare returns to previous level by about 03:05 UTC.
Sunspot count: group=1. sunspots=4, R=14
Telescope: Lunt LS50T with B600 blocking filter
Camera : ASI174MM
exposure: 0.75 ms
approximately south is up, east to the left
2020 October 18 Sun - Solar surface in H-alpha, with AR12775 and AR12776
2020 October 18 Sun - Solar surface in H-alpha, with AR12775 and AR12776
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