2023 March 18 Sun - Solar surface in Ca-K, with AR13247, AR13249, AR13250, AR13251, AR13252, AR13253, AR13254, AR13255, AR13256 and possible AR1325a.
AR13251, shows up at (S13W36). A sunspot with full penumbra is observed, embedded in plages.
AR13256, shows up at (S21E72). At least 4 sunspots are observed, embedded in plages. Flares are observed.
Sunspot count: group=6, sunspot=12, R=72
Telescope: Baader Triband C9.25 solar telescope, 235 mm f/10
Sharpstar AL80 II refractor, ED Triplet. 500 mm f/6.25 for whole-disc
Camera : ASI1600MM Pro, cooled to -10.0C
Filters: Lunt Ca-K module B1200
approximately north is up, east to the left.
2023 March 18 Sun - Solar surface in Ca-K, with AR13247, AR13249, AR13250, AR13251, AR13252, AR13253, AR13254, AR13255,
2023 March 18 Sun - Solar surface in Ca-K, with AR13247, AR13249, AR13250, AR13251, AR13252, AR13253, AR13254, AR13255,
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Re: 2023 March 18 Sun - Solar surface in Ca-K, with AR13247, AR13249, AR13250, AR13251, AR13252, AR13253, AR13254, AR132
Images of AR13256
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- cak-AR13256-101706.jpg (458.8 KiB) 已瀏覽 445 次
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- cak-AR13256-101722.jpg (431.51 KiB) 已瀏覽 445 次
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- cak-AR13256-102120.jpg (421.96 KiB) 已瀏覽 445 次
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- cak-AR13256-102136.jpg (424.33 KiB) 已瀏覽 445 次
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- cak-AR13256-104638.jpg (444.15 KiB) 已瀏覽 445 次
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- cak-AR13256-104652.jpg (435.32 KiB) 已瀏覽 445 次
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