2021 January 05 Sun - solar surface in Ca-K
In ca-K, the solar surface is very calm, and the only sign of activities are small patches of plages, ostly in the southern hemisphere.
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
approximately north is up, east to the left
2021 January 05 Sun - solar surface in Ca-K
2021 January 05 Sun - solar surface in Ca-K
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- cak-disc-142318.png (397.43 KiB) 已瀏覽 25 次
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- cak-disc-142803.png (148.36 KiB) 已瀏覽 25 次
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- cak-plage-142417.jpg (70.14 KiB) 已瀏覽 25 次
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