2023 May 27 Sun - Solar surface in Ca-K, with AR13310, AR13311, AR13312, AR13313, AR13314, AR13315, AR13316 and possible

[PTS]

2023 May 27 Sun - Solar surface in Ca-K, with AR13310, AR13311, AR13312, AR13313, AR13314, AR13315, AR13316 and possible AR1331a.

AR13310 shows up at (S20W48). A huge sunspot with full penumbra is observed, embedded in plages.
AR13311 shows up at (N18W35). The larger sunspots with penumbra and split umbra are observed, embedded plages.
AR13312 shows up at (S25W26). About 9 tiny sunspots are observed, embedded in a huge patch of plages where flares are also observed..
AR13313 is located at (N23W19). A sunspot with full penumbra is observed, embedded plages.
AR13314 is located at (N15W48). About 9 sunspots are observed, embedded plages. The leading and following sunspots come with penumbra and split umbra.
AR13315 is located at (S17E01). Most of the sunspots are observed, embedded in plages where flares are also observed.
AR13316 is located at (N09E25). Many of thr sunspots are observed, embedded in plages where flares are also observed..

Sunspot count: group=8, sunspot=66, R=146

Telescope: Baader Triband C9.25 solar telescope, 235 mm f/10 with Sharpstar AL80 II refractor, ED Triplet. 500 mm f/6.25 for whole-disc
Camera : ASI1600MM Pro, cooled to -7.0C.
Filters: Lunt Ca-K module B1200

approximately north is up, east to the left.

[PTS]

Images of AR13311

[PTS]

Images of AR13312

[PTS]

Images of AR13313

[PTS]

Images of AR13314

[Eddy So]

[PTS]

Images of AR13315

[PTS]

Images of AR13316

[Eddy So]