2021 January 17 Sun - solar surface in Ca-K, with AR12796
AR12796 is still active with flares and filaments that are visible in Ca-K. However, the sunspots are not visible.
sunspot count: group=2, sunspot=7, R=27
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 17 Sun - solar surface in Ca-K, with AR12796
2021 January 17 Sun - solar surface in Ca-K, with AR12796
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