Sunspot drawing of 2018-12-27

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https://doi.org/10.7891/e-manuscripta-159993



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2018-12-27
10:15
Hs 1304.6:11399
https://doi.org/10.7891/e-manuscripta-159993
Observer : Marco Cagnotti
Seeing (SIDC) : 4
No group