By matthew chin | 2021-02-07
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On 03/21/2023 10:18 am by Patricio Leon | Santiago, Chile
the eastern half of this first autumn Sun presents three well developed sunspots; the bigger, AR3256, measures about 2.5x2.5 Earths, big enough to be seen with protected unaided eye,
Newt 4.5" + solar film 1/640s ISO100
crop, B/C