2020 November 26 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786

[PTS]

2020 November 26 Sun - solar surface in Ca-K, with AR12783, AR12784, AR12785 and AR12786

AR12783 remains active. While the leading group is relatively quiet with filaments and plages, the activities of following group has been less active than the previous days. 2 sunspots are visible.

AR12784 remains active with flares and filaments, but activity is lowering.

AR12785 produces bright flares, mainly in the following group. The large sunspot dominates the leading group.

AR12786 is demonstrating how a complex and huge active region may be. The main leading sunspot is splitting up, both from the umbra and the penumbra. Several sunspots show up in the following group, where many flares are visible.

sunspot count: group=3, sunspot=10, R=40

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

[PTS]

Images of AR12784

[PTS]

Images of AR12785