2021 March 01 Sun - solar surface in Ca-K, with AR12803, AR12804. AR12805 and possible AR12806
Most images are taken through clouds.
AR12803 is less active today. Bright plages are visible, but no trace of sunspot.
Most of AR12804 is on the backside, leaving just a thin patch of plages.
AR12805 is very close to the SW limb, and not much is visible.
A small active group appears at (S31E25). A sunspot is visible.
sunspot count: group=1, sunspot=1, R=11
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 March 01 Sun - solar surface in Ca-K, with AR12803, AR12804. AR12805 and possible AR12806
2021 March 01 Sun - solar surface in Ca-K, with AR12803, AR12804. AR12805 and possible AR12806
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Re: 2021 March 01 Sun - solar surface in Ca-K, with AR12803, AR12804. AR12805 and possible AR12806
Images of possible AR12806
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- cak-AR12806-105819.png (87.77 KiB) 已瀏覽 81 次
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- cak-AR12806-105838.png (82.75 KiB) 已瀏覽 81 次
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- cak-AR12806-105946.png (210.05 KiB) 已瀏覽 81 次
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