2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786
AR12783 remains active. A few flares are visible, so are 3 sunspots.
AR12784 is reduced to a few plages.
AR12785 produces some flares, mainly in the following group. The large sunspot dominates the leading group.
AR12786 continue to develop into a complex active region, with flares showing up in extensive arena. At least 9 sunspots are visible. There is evidence that the main leading sunspot is splitting up, and several small umbrae appear within the penumbra.
sunspot count: group=3, sunspot=13, R=43
Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor
Camera : ASI174MM
focal length : 500 mm f/6.25
filter: Lunt Ca-K Module B1200
exposure: 0.35 - 0.40 ms
approximately north is up, east to the left
2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786
2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786
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Re: 2020 November 27 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786
Images of AR12784, AR12785 and AR12786
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- cak-AR12785-786-102858.jpg (60.84 KiB) 已瀏覽 145 次
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