2021 April 22 Sun - solar surface in white-light, with AR12816, AR12817 and AR12818

[PTS]

2021 April 22 Sun - solar surface in white-light, with AR12816, AR12817 and AR12818

AR12815 has turned to the backside.
AR12816 has crossed the meridian, and is today located at (S24w08). This group has been very active in the past 24 hours. 6 sunspots are visible, some come with penumbrae. This Class-E group extends more than 10 degrees in longitude.
AR12817 is very close to the, solar limb and is located at (N18W81). This Class-D group has at least 8 sunspots.
AR12818 is near the SE limb, at (S17E50). A large sunspot with penumbrae is visible, together with faculae, mostly to the south.
sunspot count: group=3, sunspot=15, R=45

Telescope: Celestron C5, 127mm f/10 Schmidt-Cassegrain
Camera : ASI1600MM Pro, not cooled
focal length : 1250 mm f/10
Filters: Baader Solar Film 5.0
approximately north is up, east to the left

[PTS]

Images of AR12817 and AR12818

[Eddy So]