By Steve Rusnak | 2024-05-31
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resilient sunspot
On 06/02/2024 02:49 pm by Patricio Leon | Santiago, Chile
former AR3664 has no major changes, despite its low surface darkness (penumbra area far bigger than umbra) it is still easily seen without optical aid; close to the western limb, AR3700 developed in the last 24 hours two big elongated dark cores, another isolated one rotated at 10 o'clock limb
Newt 4.5"+ solar film, 1/640s ISO100
crop, B/C
