By William Curtis | 2025-10-13
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boiling sun
On 10/13/2025 10:07 am by Patricio Leon | Santiago, Chile
Outstanding sunspots, very fast growing and active emission of C and M-flares, particularly from AR4246, the strange looking spot at upper right. Itself and the pair AR4248-4250 at center sun are detectable with protected eye alone. SDO images down for the last 30 days.
Newt 4.5"+ solar film, 1/640s ISO100
crop, B/C
