Sunspot
Taken by Francois Rouviere on April 13, 2019 @ Cannes, France
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Details:
A big isolated spot, showing interesting detail inside the umbra.
AiryLab Celestron 8 solar telescope at F/D = 35, with DayStar Ion 0.3 A H-alpha filter and Basler 1920-155 camera.
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