2021 October 17 Sun - solar surface H-alpha, with no numbered active region.
With AR12882 turned to the backside, there is no active region on the solar disc.
Near the SE limb, some strips of plages and filaments are visible.
Near the SWW limb, a very long filament, with plages, are observed.
A few dark filaments are observed to the east of the disc center.
Sunspot count: group=0, sunspot=0, R=0
Telescope: Lunt LS100Tha with B1200 blocking filter + 2X barlow
Camera : ASI1600MM Pro, not cooled.
approximately north is up, east to the left
2021 October 17 Sun - solar surface H-alpha, with no numbered active region.
2021 October 17 Sun - solar surface H-alpha, with no numbered active region.
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