By Mario Rana | 2025-08-26
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the big ones are back
On 08/26/2025 10:46 am by Patricio Leon | Santiago, Chile
complex AR4197 grew many times in the last day and now has two big dark cores about 4 times the Earth's size each, they are visible with protected eye alone, as well as the big AR4191; both sunspots have produced M class flares in the early hours (UT) of tuesday the 26th; nice steady seeing.
Newt 4.5"+ solar film, 1/640s ISO100
crop, B/C
