Large Sunspot Alert
Taken by Petr Horálek on June 26, 2026 @
Seč, Czech Republic
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Details:
Yesterday, on 26 June 2026, I made it happen to capture full sunset over Lichnice Castle, Czech Republic (directly over Milada tower). The sky was dusty, so the sunset was not bright. However the contrast was high enough to reveal the growing (and already large) sunspot AR 4478. It seems to be larger than 12 Earths in one row, easily visible with the naked eyes through a sophisticated filter (such as the one for solar eclipse, which will occur on 12 August). Used Nikon Z6III, f11, 1400mm, ISO 500, 1/250s.
Photographer's website:
https://www.petrhoralek.com/
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