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PTS
週日 20 9月, 2020 18:11
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 20 Sun - solar surface in Ca-K
回覆: 0
觀看: 1

2020 September 20 Sun - solar surface in Ca-K

2020 September 20 Sun - solar surface in Ca-K The solar surface is basically featureless in Ca-K light. The small active region is still active with flares and filament. Sunspot count: group=0. sunspot=0, R=0 Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : ASI174MM focal length : 5...
PTS
週日 20 9月, 2020 17:41
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 20 Sun
回覆: 0
觀看: 1

2020 September 20 Sun

2020 September 20 Sun There is currently no active region on front side of the solar disc. Sunspot count: group=0. sunspot=0, R=0 Telescope: Celestron C5, 127mm f/10 Schmidt-Cassegrain Camera : ASI1600MM Pro, not cooled. focal length : 1250 mm f/10 Filters: Baader Solar Film 5.0+ Baader Planetarium ...
PTS
週六 19 9月, 2020 11:14
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 19 Sun - solar surface in Ca-K
回覆: 1
觀看: 15

2020 September 19 Sun - solar surface in Ca-K

2020 September 19 Sun - solar surface in Ca-K The solar surface is basically featureless in Ca-K light., except for a small active region just west of the meridian in the southern hemisphere. It comes with flare and filaments. Sunspot count: group=0. sunspot=0, R=0 Telescope: Sharpstar AL-80 II, 8 c...
PTS
週日 13 9月, 2020 14:21
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 13 Sun - Sun halo
回覆: 1
觀看: 96

2020 September 13 Sun - Sun halo

2020 September 13 Sun - Sun halo

Taken with mobile phone.
PTS
週日 13 9月, 2020 13:34
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 13 Sun - solar surface in Ca-K
回覆: 1
觀看: 50

2020 September 13 Sun - solar surface in Ca-K

2020 September 13 Sun - solar surface in Ca-K The solar surface is basically featureless in Ca-K light. The small active region has become more active with flares and filament. Sunspot count: group=0. sunspot=0, R=0 Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : ASI174MM focal len...
PTS
週日 13 9月, 2020 12:26
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 13 Sun
回覆: 1
觀看: 49

2020 September 13 Sun

2020 September 13 Sun There is currently no active region on front side of the solar disc. Sunspot count: group=0. sunspot=0, R=0 Telescope: Celestron C5, 127mm f/10 Schmidt-Cassegrain Camera : ASI1600MM Pro, not cooled. focal length : 1250 mm f/10 Filters: Baader Solar Film 5.0+ Baader Planetarium ...
PTS
週六 12 9月, 2020 18:10
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 12 Sun - prominences on the NNW solar limb
回覆: 2
觀看: 61

2020 September 12 Sun - prominences on the NNW solar limb

2020 September 12 Sun - prominences on the NNW solar limb I am showing the prominences in 2 wavelengths, if possible. In general, the prominences are much brighter in H-alpha than in Ca-K, despite the much larger aperture (80 mm f/6.25 vs 35 mm f/11.5) used for H-alpha. Sunspot count: group=0. sunsp...
PTS
週六 12 9月, 2020 18:04
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 12 Sun - prominences on the SWW solar limb
回覆: 2
觀看: 32

2020 September 12 Sun - prominences on the SWW solar limb

2020 September 12 Sun - prominences on the SWW solar limb I am showing the prominences in 2 wavelengths, if possible. In general, the prominences are much brighter in H-alpha than in Ca-K, despite the much larger aperture (80 mm f/6.25 vs 35 mm f/11.5) used for H-alpha. Sunspot count: group=0. sunsp...
PTS
週六 12 9月, 2020 17:58
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 September 12 Sun - prominences on the SSE solar limb
回覆: 3
觀看: 38

2020 September 12 Sun - prominences on the SSE solar limb

2020 September 12 Sun - prominences on the SSE solar limb I am showing the prominences in 2 wavelengths, if possible. In general, the prominences are much brighter in H-alpha than in Ca-K, despite the much larger aperture (80 mm f/6.25 vs 35 mm f/11.5) used for H-alpha. Sunspot count: group=0. sunsp...

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