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PTS
週三 21 4月, 2021 21:57
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 April 21 Sun - eruptive prominence from AR12815.
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2021 April 21 Sun - eruptive prominence from AR12815.

2021 April 21 Sun - eruptive prominence from AR12815. AR12815 is close to the SE limb at (S21W77). At about 03:39 UTC, a small prominence is observed to emerge from the solar limb. A time-lapse recording from about 03:39 UTC to 03:59 UTC results in about 1800 frames (at 2 fps). 77 frames are cropped...
PTS
週三 21 4月, 2021 17:30
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 April 21 Sun - solar surface in H-alpha, with AR12815, AR12816, AR12817 and AR12818
回覆: 5
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2021 April 21 Sun - solar surface in H-alpha, with AR12815, AR12816, AR12817 and AR12818

2021 April 21 Sun - solar surface in H-alpha, with AR12815, AR12816, AR12817 and AR12818 AR12815 is close to the SE limb at (S21W77). Faint plages and filaments are still visible. 2 small prominences are observed to grow from this AR, and produces an interesting eruption. (I'll post this later) AR12...
PTS
週三 21 4月, 2021 15:44
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 April 21 Sun - solar surface in Ca-K, with AR12815, AR12816, AR12817 and AR12818
回覆: 3
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2021 April 21 Sun - solar surface in Ca-K, with AR12815, AR12816, AR12817 and AR12818

2021 April 21 Sun - solar surface in Ca-K, with AR12815, AR12816, AR12817 and AR12818 No image of AR12815 is taken. AR12816 is today located at (S24E08). This group has been very active in the past 24 hours. At least 8 sunspots are visible, many come with penumbrae. The plages and large sunspots are...
PTS
週三 21 4月, 2021 14:11
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 April 21 Sun - solar surface in white-light, with AR12815, AR12816, AR12817 and AR12818
回覆: 4
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2021 April 21 Sun - solar surface in white-light, with AR12815, AR12816, AR12817 and AR12818

2021 April 21 Sun - solar surface in white-light, with AR12815, AR12816, AR12817 and AR12818 AR12815 is close to the SE limb, at (S21W77). No sunspot is visible. AR12816 is today located at (S24E08). This group has been very active in the past 24 hours. At least 8 sunspots are visible, many come wit...
PTS
週三 21 4月, 2021 12:37
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 April 21 Sun - AR12815, AR12816, AR20817 and AR12818
回覆: 1
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2021 April 21 Sun - AR12815, AR12816, AR20817 and AR12818

2021 April 21 Sun - AR12815, AR12816, AR20817 and AR12818 AR12815 is located at (S21W77). No sunspot is visible. AR12816 is today located at (S24E08). This group has been very active in the past 24 hours. At least 8 sunspots are visible, many come with penumbrae. A M1.1 flare shows up yesterday. AR1...
PTS
週二 20 4月, 2021 16:34
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 April 20 Sun - solar surface in white-light, with AR12815, AR12816, AR12817 and possible AR12818 and possible AR128
回覆: 1
觀看: 27

2021 April 20 Sun - solar surface in white-light, with AR12815, AR12816, AR12817 and possible AR12818 and possible AR128

2021 April 20 Sun - solar surface in white-light, with AR12815, AR12816, AR12817 and possible AR12818 and possible AR12819 AR12814 has turned to the backside. AR12815 has no sunspot. A patch of faculae is visible. AR12816 is very active, with 4 sunspots that come with penumbrae. AR12817 is very acti...

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