2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804
AR12802 is located at (N18W82) this morning. There is not much visible feature.
AR12803 is today located at (N21E35). Activity has subsided a bit. Many filaments surround the plages.
Meanwhile, a new active region shows up at (N19E08). Bright flares and filaments are observed. This AR is undergoing minor eruptions, producing dark filaments among the bright flares.
The dark filament on the SW limb is partially off-disc, giving a nice prominence.
sunspot count: group=2, sunspot=5, R=25
Telescope: Lunt LS50T with B1200 blocking filter, and 2X barlow
Camera : ASI174MM
approximately north is up, east to the left
2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804
2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804
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Re: 2021 February 22 Sun - solar surface in H-alpha, with AR12803 and possible AR12804
Images of AR12803 and possible AR12804
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- ha-AR12803-804-111343.png (227.69 KiB) 已瀏覽 46 次
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