By PAOLO PALMA | 2025-02-22
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complex spots
On 02/22/2025 09:55 am by Patricio Leon | Santiago, Chile
AR3998 is a beautiful complex spot which alternates delta magnetic component with newly formed AR4000, so far, no energetic flares though; a new sunspot group is incomig at the 10 oclock' limb
Newt 4.5" + solar film, 1/640s ISO100
crop, B/C
