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PTS
週二 14 7月, 2020 23:03
版面: 業餘天文研究專區 Amateur Astronomers' Research Area
主題: 2020 July 14 - Observation of Asteroid (532) Herculina occultation of TYC 6279-01243-1 at Hokoon
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2020 July 14 - Observation of Asteroid (532) Herculina occultation of TYC 6279-01243-1 at Hokoon

2020 July 14 - Observation of Asteroid (532) Herculina occultation of TYC 6279-01243-1 at Hokoon I arrived at Hokoon at about 11:10 UTC, and equipment was ready by 11:25 UTC. However, no star was visible on the screen due to clouds and low altitude of target. When the first star came to view, it was...
PTS
週二 14 7月, 2020 14:16
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 13 Sun - The solar surface in Ca-K
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2020 July 13 Sun - The solar surface in Ca-K

2020 July 13 Sun - The solar surface in Ca-K The solar surface is basically featureless except for the general supergranulation network. Sunspot count: group=0. sunspot=0, R=0 Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : ASI174MM focal length : 500 mm f/6.25 filter: Lunt Ca-K Mo...
PTS
週二 14 7月, 2020 12:25
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 14 Sun
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2020 July 14 Sun

2020 July 14 Sun The solar surface returns to featureless. 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 G-band continuum. approximately ...
PTS
週一 13 7月, 2020 21:50
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 13 Sun - The solar surface in Ca-K
回覆: 1
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2020 July 13 Sun - The solar surface in Ca-K

2020 July 13 Sun - The solar surface in Ca-K AR12766 has turned to the backside. The solar surface is basically featureless except for the general supergranulation network. Sunspot count: group=0. sunspot=0, R=0 Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : ASI174MM focal length ...
PTS
週一 13 7月, 2020 13:02
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 13 Sun - AR12766
回覆: 1
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2020 July 13 Sun - AR12766

2020 July 13 Sun - AR12766 AR12766 is almost all on the backside. No sunspot is visible. 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 G-...
PTS
週日 12 7月, 2020 16:17
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 12 Sun - prominences on the SW solar limb
回覆: 2
觀看: 51

2020 July 12 Sun - prominences on the SW solar limb

2020 July 12 Sun - prominences on the SW 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. sunspots=0,...
PTS
週日 12 7月, 2020 16:12
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 12 Sun - prominences on the NE solar limb
回覆: 2
觀看: 48

2020 July 12 Sun - prominences on the NE solar limb

2020 July 12 Sun - prominences on the NE 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. sunspots=0,...
PTS
週日 12 7月, 2020 15:57
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 12 Sun - surface features in H-alpha
回覆: 2
觀看: 51

2020 July 12 Sun - surface features in H-alpha

2020 July 12 Sun - surface features in H-alpha In H-alpha, only several filaments, notably the ones near the N and SW limbs, are visible. AR12766 has mostly turned to the backside, and cannot be seen in H-alpha. Sunspot count: group=0. sunspots=0, R=0 For H-alpha images: Telescope: Lunt LS35T with B...
PTS
週日 12 7月, 2020 15:00
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 12 Sun - AR12766 in Ca-K
回覆: 1
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2020 July 12 Sun - AR12766 in Ca-K

2020 July 12 Sun - AR12766 in Ca-K AR12766 is turning to the backside. The faculae close to the SW limb is still visible. Sunspot count: group=0. sunspot=0, R=0 Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor Camera : ASI174MM focal length : 500 mm f/6.25 filter: Lunt Ca-K Module B1200 expo...
PTS
週日 12 7月, 2020 12:10
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 12 Sun - AR12766
回覆: 1
觀看: 40

2020 July 12 Sun - AR12766

2020 July 12 Sun - AR12766 AR12766 is today turning to the backside on the W limb, at N05W85. No sunspot is visible. 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 Fil...
PTS
週六 11 7月, 2020 20:56
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2020 July 11 Sun - prominences on the SW solar limb
回覆: 1
觀看: 39

2020 July 11 Sun - prominences on the SW solar limb

2020 July 11 Sun - prominences on the SW 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. sunspots=0,...

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