By Jim Militello | 2025-10-01
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tense sun
On 10/01/2025 10:22 am by Patricio Leon | Santiago, Chile
the main activity of the present sun is due to a big transverse southern coronal hole seen in UV images, given that power units AR4230 and AR4236 have been calm for the time being; SDO images down for 18 days
Newt 4.5"+ solar film, 1/640s ISO100
crop, B/C
