Halpha sunspot
Taken by Harald Paleske on June 14, 2025 @ Weißenfels, Sachsen Anhalt, Germany
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Despite the great heat and Sahara dust, the spinning AR 4105 could be observed in high resolution today on June 14, 2025. The 300mm Unigraph and double stack etalons were used.
Photographer's website:
https://www.unigraph.de
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