By Eliot Herman | 2025-01-20
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really big sunspot
On 01/20/2025 10:22 am by Patricio Leon | Santiago, Chile
AR 3961 is dead center in the Sun face and is huge at 12 x 3 Earths ! It and northern AR 3959 continue to be easy protected eye targets
Newt 4.5" + solar film, 1/640s ISO100
crop, B/C
