2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
AR12802 is located at (N18W68) this morning. There is not much visible feature.
AR12803 is today located at (N21E49). Bright intense flares are present, so are filaments. The sunspots are not observed in H-alpha.
The huge dark filament near disc center has mostly vanished, leaving just a thin one.
The dark filament near the SW limb is partially off-disc and produces a prominence.
Near the E limb, most of the prominences observed yesterday is now on-disc, in the form of a filament.
sunspot count: group=1, sunspot=2, R=12
Telescope: Lunt LS50T with B1200 blocking filter, and 2X barlow
Camera : ASI174MM
approximately north is up, east to the left
2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
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Re: 2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
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Re: 2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
more
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- ha-filament-E-111618.png (100.77 KiB) 已瀏覽 82 次
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- ha-filament-E-112001.png (217.33 KiB) 已瀏覽 82 次
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- ha-filament-E-112441.png (205.19 KiB) 已瀏覽 82 次
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- ha-filament-E-112815.png (200.24 KiB) 已瀏覽 82 次
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- ha-filament-E-113747.png (179.1 KiB) 已瀏覽 82 次
Re: 2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
Images of AR12802
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Re: 2021 February 21 Sun - solar surface in H-alpha, with AR12802 and AR12803, and huge dark filaments
Images of AR12803
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