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PTS
週一 22 2月, 2021 16:58
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 22 Sun - prominences on the SWW solar limb
回覆: 2
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2021 February 22 Sun - prominences on the SWW solar limb

2021 February 22 Sun - prominences on the SWW solar limb Sunspot count: group=2, sunspots=5, R=25 For H-alpha images: Telescope: Lunt LS50T with B1200 blocking filter + 2X barlow Camera : ASI174MM exposure: 25 ms For Ca-K images: Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : ASI1...
PTS
週一 22 2月, 2021 15:59
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804
回覆: 1
觀看: 15

2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804

2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804 AR12802 is located at (N18W82) this morning. There is not much visible feature. AR12803 is today located at (N21E35). Activity has subsided a bit. Many filaments surround the plages. Meanwhile, a new active region sho...
PTS
週一 22 2月, 2021 14:03
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 22 Sun - solar surface in Ca-K, with AR12802, AR12803 and possible AR12804
回覆: 3
觀看: 18

2021 February 22 Sun - solar surface in Ca-K, with AR12802, AR12803 and possible AR12804

2021 February 22 Sun - solar surface in Ca-K, with AR12802, AR12803 and possible AR12804 AR12802 is located at (N18W82) this morning. Nothing from this AR is visible, AR12803 is today located at (N21E35). Tiny flares are visible, so are plages. The sunspot is not visible in Ca-K. Meanwhile, a new ac...
PTS
週一 22 2月, 2021 12:03
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 22 Sun - solar surface in white-light, with AR12802, AR12803 and possible AR12804
回覆: 0
觀看: 11

2021 February 22 Sun - solar surface in white-light, with AR12802, AR12803 and possible AR12804

2021 February 22 Sun - solar surface in white-light, with AR12802, AR12803 and possible AR12804 AR12802 is located at (N18W82) this morning. No sunspot is visible. AR12803 is today located at (N21E35). 1 small sunspots is visible, but not recorded in my images.. Meanwhile, a new active region shows ...
PTS
週一 22 2月, 2021 08:58
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 22 Sun - possible new AR12804
回覆: 1
觀看: 20

2021 February 22 Sun - possible new AR12804

2021 February 22 Sun - possible new AR12804 This morning, a new active region appear at (N19E08), west of AR12803. IN H-alpha, a very bright flare with dark filament is visible. In white-light, a tiny sunspot shows up. H-alpha image from Learmonth, taken at 00:30 UTC White-light image from SDO, take...
PTS
週日 21 2月, 2021 21:12
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 21 Sun - prominences on the NE solar limb
回覆: 3
觀看: 25

2021 February 21 Sun - prominences on the NE solar limb

2021 February 21 Sun - prominences on the NE solar limb The prominences here are the same as yesterday, except that the one on the north has erupted and becomes very tall since last night. Sunspot count: group=1, sunspots=2, R=12 For H-alpha images: Telescope: Lunt LS50T with B1200 blocking filter +...
PTS
週日 21 2月, 2021 20:58
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2021 February 21 Sun - prominences on the SW solar limb
回覆: 2
觀看: 13

2021 February 21 Sun - prominences on the SW solar limb

2021 February 21 Sun - prominences on the SW solar limb This prominence is formed from part of the dark filament that has moved off-disc. Sunspot count: group=1, sunspots=2, R=12 For H-alpha images: Telescope: Lunt LS50T with B1200 blocking filter + 2X barlow Camera : ASI174MM exposure: 20 ms For Ca...

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