Sunspot drawing of 2019-2-7

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https://doi.org/10.7891/e-manuscripta-160529



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2019-02-07
09:00
Hs 1304.6:11434
https://doi.org/10.7891/e-manuscripta-160529
Observer : Marco Cagnotti
Seeing (SIDC) : 2
No group