2020 January 28 Sun - AR12757
The sunspots of AR12757 have undergone great changes. The leading sunspot has grown a lot with a well-developed penumbra. The following sunspot has nearly vanished from sight.
Sunspot count: group=1. sunspot=2, R=12
Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor
Camera : ASI1600MM Pro, not cooled.
Barlow: 2X barlow
focal length : 1000 mm f/12.5
Filters: Baader Solar Film 5.0+ Baader Planetarium G-band continuum.
approximately north is up, east to the left
2020 January 28 Sun - AR12757
2020 January 28 Sun - AR12757
- 附加檔案
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- Taken at 06:51:34 UTC
exposure: 2.5 ms - W-disc-145134.jpg (1.9 MiB) 已瀏覽 267 次
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- Taken at 06:51:53 UTC
exposure: 2.5 ms - W-disc-145155.jpg (1.86 MiB) 已瀏覽 267 次
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- Taken at 06:54:13 UTC
exposure: 2.3 ms - W-disc-145414.jpg (1.78 MiB) 已瀏覽 267 次
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- AR12757
Taken at 06:52:45 UTC
exposure: 2.3 ms
cropped 800x800 - AR12757-145245.png (392.4 KiB) 已瀏覽 267 次
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- AR12757
Taken at 06:53:08 UTC
exposure: 2.3 ms
cropped 800x800 - AR12757-145308.png (394.78 KiB) 已瀏覽 267 次
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- AR12757
Taken at 06:54:55 UTC
exposure: 2.3 ms
cropped 800x800 - AR12757-145455.png (400.75 KiB) 已瀏覽 267 次
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- AR12757
Taken at 06:55:33 UTC
exposure: 2.0 ms
cropped 800x800 - AR12757-145533.png (385.68 KiB) 已瀏覽 267 次
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- AR12757
Taken at 06:56:30 UTC
exposure: 2.5 ms
cropped 800x800 - AR12757-145630.png (397.77 KiB) 已瀏覽 267 次
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