2020 January 24 Sun - another new active region, maybe AR12757
A new active region appears near the E solar limb. Bright flare is visible, so is a sunspot.
From the magnetogram, magnetic reversal is NOT demonstrated. Moreover, as it is just north of the solar equator, this should be from the old 24th solar cycle.
Sunspot count: group=1, sunspot number=1, R=11
H-alpha image from Learmonth, taken at 06:30 UTC.
Magnetogram and white-light images from SDO taken at 06:40:38 UTC
2020 January 24 Sun - another new active region, maybe AR12757
2020 January 24 Sun - another new active region, maybe AR12757
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最後由 PTS 於 週日 26 1月, 2020 08:01 編輯,總共編輯了 1 次。
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