2021 February 23 Sun - solar surface in Ca-K, with AR12803, AR12804 and AR12805
Lots of new activities show up on the solar surface in the past 24 hours.
AR12803 is still active with large patches of plages. Only one or two micro flares are present.
AR12804, located at (N20W06) has been evolving and as this morning. Lots of flare activities are observed. At least 4 sunspots are visible in this Class-C bipolar group. The leading sunspot has well-developed penumbra.
Another new AR shows up at (S22W00), right on the meridian. Bright flares are observed. At least 7 sunspots are visible in this Class-C bipolar group. Some penumbra is observed in the leading sunspot, which also seems to be splitting.
sunspot count: group=2, sunspot=11, R=31
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 February 23 Sun - solar surface in Ca-K, with AR12803, AR12804 and AR12805
2021 February 23 Sun - solar surface in Ca-K, with AR12803, AR12804 and AR12805
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Re: 2021 February 23 Sun - solar surface in Ca-K, with AR12803, AR12804 and AR12805
Images of AR12803 and AR12804
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Re: 2021 February 23 Sun - solar surface in Ca-K, with AR12803, AR12804 and AR12805
Images of AR12805
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Re: 2021 February 23 Sun - solar surface in Ca-K, with AR12803, AR12804 and AR12805
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