By Michael Flynn | 2024-12-26
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quiet sun
On 12/28/2024 10:00 am by Patricio Leon | Santiago, Chile
AR3936 mantains its size and structure, presents a big dark core measuring 2.5 x 4 Earths at right half and a dimmer left sector; other sunspot groups show minor scarse cores
Newt 4.5" + solar film, 1/500s ISO100
crop, B/C
