2023 January 23 Sun - Solar surface in Ca-K, with AR13188, AR13190, AR13191, AR13192, AR13194, AR13195, AR13196, AR13187

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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2023 January 23 Sun - Solar surface in Ca-K, with AR13188, AR13190, AR13191, AR13192, AR13194, AR13195, AR13196, AR13187

文章 PTS » 週一 23 1月, 2023 22:39

2023 January 23 Sun - Solar surface in Ca-K, with AR13188, AR13190, AR13191, AR13192, AR13194, AR13195, AR13196, AR13187, AR13198, AR13199 and AR13200.

A brief clearance of clouds allows me to observed in Ca-K.
Sunspot count: group=9, sunspot=75, R=165

Telescope:
For whole-disc: Sharpstar AL80 II refractor, ED Triplet
focal length : 500 mm f/6.25
Camera : ASI1600MM Pro, cooled to -13.0C
Filters: Lunt Ca-K Module B1200.

approximately north is up, east to the left.
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