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PTS
週五 27 11月, 2020 22:50
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 Nov 27 Sun - possible new active regions
回覆: 0
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2020 Nov 27 Sun - possible new active regions

2020 Nov 27 Sun - possible new active regions Just a few hours ago, a small sunspot appears on the NE limb, at (N30E72). Some minor flares and filament show up at this location this morning. In addition, a small flaring region suddenly appears north of AR12786, at (S03E33), and 2 small sunspots are ...
PTS
週五 27 11月, 2020 21:55
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 November 27 Sun - solar surface in H-alpha, with AR12783, AR12784, AR12785 and AR12786
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2020 November 27 Sun - solar surface in H-alpha, with AR12783, AR12784, AR12785 and AR12786

2020 November 27 Sun - solar surface in H-alpha, with AR12783, AR12784, AR12785 and AR12786 AR12783 remains active. A few small flare show up around the large sunspot. Filaments appear here and there, some are long and dark. AR12784 seems not too active, but one or two small flares can be seen. A hu...
PTS
週五 27 11月, 2020 17:05
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786
回覆: 2
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2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786

2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786 AR12783 remains active. A few flares are visible, so are 3 sunspots. AR12784 is reduced to a few plages. AR12785 produces some flares, mainly in the following group. The large sunspot dominates the leading group...
PTS
週五 27 11月, 2020 13:17
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 November 27 Sun - solar surface in white-light, with AR12783, AR12784, AR12785 and AR12786
回覆: 3
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2020 November 27 Sun - solar surface in white-light, with AR12783, AR12784, AR12785 and AR12786

2020 November 27 Sun - solar surface in white-light, with AR12783, AR12784, AR12785 and AR12786 AR12783 is moving towards the SW limb, at (S22W50). The leading sunspot is still intact, with 2 smaller sunspots to its east. AR12784 No visible sunspot. AR12785 is now more distant from AR12786 as the ef...
PTS
週五 27 11月, 2020 12:03
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 November 27 Sun
回覆: 1
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2020 November 27 Sun

2020 November 27 Sun

sunspot count: group=3, sunspot=13, R-43

Camera: Sony RX10iv
Focal length: 600 mm (35-mm equivalent) f/4
Filter: Baader Solar Film 5.0
exposure: 0.5 ms
roughly north is up, east to the left
PTS
週五 27 11月, 2020 08:25
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 November 26 Sun - prominences on the SW solar limb
回覆: 3
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2020 November 26 Sun - prominences on the SW solar limb

2020 November 26 Sun - prominences on the SW solar limb Sunspot count: group=3, sunspots=10, R=40 For H-alpha images: Telescope: Lunt LS50T with B1200 blocking filter + 2X barlow Camera : ASI174MM exposure: 22.0 ms For Ca-K images: Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : AS...

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