2021 January 03 Sun - solar surface in H-alpha, with AR12795 and dark filaments
AR12795 are just patches of flares+plages. The tiny sunspot is not visible in H-alpha.
Several huge dark filaments are visible in the SE area.
sunspot count: group=1, sunspot=1, R=11
Telescope: Lunt LS50T with B1200 blocking filter, and 2X barlow
Camera : ASI174MM and ASI174MC
exposure: 0.90 ms - 5.0 ms for monochrome images, 5.0 ms-11.0 ms for colour.
approximately north is up, east to the left
2021 January 03 Sun - solar surface in H-alpha, with AR12795 and dark filaments
2021 January 03 Sun - solar surface in H-alpha, with AR12795 and dark filaments
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Re: 2021 January 03 Sun - solar surface in H-alpha, with AR12795 and dark filaments
Images of AR12795 in colour
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- hac-AR12795-105013.png (509.61 KiB) 已瀏覽 53 次
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Re: 2021 January 03 Sun - solar surface in H-alpha, with AR12795 and dark filaments
Images of dark filaments
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- ha-filament-SE-105912.png (106.1 KiB) 已瀏覽 53 次
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