Wednesday, Jul 30, 2025

The Sun in H-Alpha captured shortly before the sky became overcast, with fairly good seeing. The image shows active regions AR 4136, 4139, 4143, and 4146, now close to the limb. Tecnosky 152mm at 3800 mm focal length on ZWO AM5N ZWO ASI 174MM Daystar Quark Chromosphere