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Community photo entitled  by Patricio Leon on 12/21/2023 at Santiago, Chile

On 12/21/2023 08:35 am by Patricio Leon | Santiago, Chile

southern hemisphere sunspot AR3529 dominates the Sun face, a Zurich class E spot (10°-15° extent) with a huge nucleus about 3.5 x 3 Earths which is easily seen without optical aid (protected eye)

Newt 4.5" + solar film, 1/500 ISO100

crop, B/C