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PTS
週二 18 6月, 2019 10:26
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 18 Sun - 30th day with spotless Sun
回覆: 0
觀看: 11

2019 June 18 Sun - 30th day with spotless Sun

2019 June 18 Sun - 30th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週日 16 6月, 2019 13:21
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 16 Sun - 28th day with spotless Sun
回覆: 1
觀看: 34

2019 June 16 Sun - 28th day with spotless Sun

2019 June 16 Sun - 28th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週六 15 6月, 2019 10:32
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 15 Sun - 27th day with spotless Sun
回覆: 1
觀看: 35

2019 June 15 Sun - 27th day with spotless Sun

2019 June 15 Sun - 27th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週五 14 6月, 2019 23:05
版面: 天文攝影 Astrophotography
主題: 2019 June 14 - M13 at Hokoon
回覆: 2
觀看: 57

2019 June 14 - M13 at Hokoon

2019 June 14 - M13 at Hokoon

The sky cleared up after the occultation event was over! I took the opportunity to show some celestial object to the visitors.
Telescope: 50-cm RC reflector, f/8
Camera: ASI1600MM Pro, cooled to -12C
Exposure: 15 s
Taken at 13:17:23 UTC
south is up. east to the left.
PTS
週五 14 6月, 2019 22:54
版面: 業餘天文研究專區 Amateur Astronomers' Research Area
主題: Asteroid occultation event on 2019 June 14 - observation at Hokoon Centre failed due to clouds
回覆: 1
觀看: 39

Asteroid occultation event on 2019 June 14 - observation at Hokoon Centre failed due to clouds

Asteroid occultation event on 2019 June 14 - observation at Hokoon Centre failed due to clouds Ceres was centred in the image at 11:24:23 UTC amid clouds. Frames were recorded every 30 seconds but frequently interrupted by clouds. The region was completely covered by cloud after 11:42 UTC. However, ...
PTS
週五 14 6月, 2019 13:52
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 14 Sun - 26th day with spotless Sun
回覆: 2
觀看: 39

2019 June 14 Sun - 26th day with spotless Sun

2019 June 14 Sun - 26th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週一 10 6月, 2019 11:29
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 10 Sun - 22nd day with spotless Sun
回覆: 1
觀看: 60

2019 June 10 Sun - 22nd day with spotless Sun

2019 June 10 Sun - 22nd day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週日 09 6月, 2019 11:48
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 9 Sun - ultra-low dispersion solar spectrum
回覆: 1
觀看: 71

2019 June 9 Sun - ultra-low dispersion solar spectrum

2019 June 9 Sun - ultra-low dispersion solar spectrum

Capture with mobile phone. Spectra produced by a fence of plate glass.
PTS
週日 09 6月, 2019 10:50
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 09 Sun - 21st day with spotless Sun
回覆: 1
觀看: 50

2019 June 09 Sun - 21st day with spotless Sun

2019 June 09 Sun - 21st day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週六 08 6月, 2019 10:11
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 08 Sun - 20th day with spotless Sun
回覆: 1
觀看: 57

2019 June 08 Sun - 20th day with spotless Sun

2019 June 08 Sun - 20th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週五 07 6月, 2019 21:00
版面: 天文攝影 Astrophotography
主題: 2019 June 07 Moon
回覆: 1
觀看: 59

2019 June 07 Moon

2019 June 07 Moon

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
approximately north is up, east to the left
PTS
週五 07 6月, 2019 11:19
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 07 Sun - 19th day with spotless Sun
回覆: 1
觀看: 63

2019 June 07 Sun - 19th day with spotless Sun

2019 June 07 Sun - 19th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週四 06 6月, 2019 09:52
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 06 Sun - 18th day with spotless Sun
回覆: 0
觀看: 52

2019 June 06 Sun - 18th day with spotless Sun

2019 June 06 Sun - 18th day with spotless Sun

Camera/lens: Sony RX10 IV, Zeiss Sonnar 8.8-220 mm f/2.4-4
focal length : 600 mm f/4 (35-mm equivalent)
Filter: Baader Solar Film 5.0
ISO: 100
images cropped 1000x1000
approximately north is up, east to the left
PTS
週三 05 6月, 2019 22:44
版面: 太陽觀測和攝影 Solar Observation & Photography
主題: 2019 June 5 Sun - ultra-low dispersion solar spectrum
回覆: 1
觀看: 86

2019 June 5 Sun - ultra-low dispersion solar spectrum

2019 June 5 Sun - ultra-low dispersion solar spectrum

Capture with mobile phone. Spectra produced by a fence of plate glass.

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