2021 January 16 Sun - solar surface in H-alpha with AR12796
AR12796 suddenly become very active yesterday, with bright flares and eruptive filaments and produces several sunspots.
sunspot count: group=1, sunspot=4, R=14
Telescope: Lunt LS50T with B1200 blocking filter, and 2X barlow
Camera : ASI174MM and ASI174MC
exposure: 0.75 ms for monochrome images, 4.5 ms-10.0 ms for colour.
approximately north is up, east to the left
2021 January 16 Sun - solar surface in H-alpha with AR12796
2021 January 16 Sun - solar surface in H-alpha with AR12796
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