2021 April 15 Sun (13:30 UTC) - AR12814 and possible AR12815 and possible AR12816

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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PTS
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2021 April 15 Sun (13:30 UTC) - AR12814 and possible AR12815 and possible AR12816

文章 PTS » 週四 15 4月, 2021 22:44

2021 April 15 Sun (13:30 UTC) - AR12814 and possible AR12815 and possible AR12816

AR12814 is today located at (S22W25). It is active, with flares and filaments and at least 8 sunspots.
A small AR located at (S20E00) becomes active a few hours ago.. At least 4 small sunspots are visible. visible. The may become AR12815.
Meanwhile, another active region shows up at (S24E80) with bright faculae, flares and filaments. 2 sunspots are visible. This may become AR12816.
sunspot count: group=3, sunspot=14, R=44

H-alpha image from Cerro Tololo, taken at 14:00 UTC
White light image from SDO, taken at 12:57 UTC
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Eddy So
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Re: 2021 April 15 Sun (13:30 UTC) - AR12814 and possible AR12815 and possible AR12816

文章 Eddy So » 週五 16 4月, 2021 20:46

[Good Job]

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