Sunspot drawing of 2017-11-23

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https://doi.org/10.7891/e-manuscripta-159446



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2017-11-23
07:45
Hs 1304.6:11098
https://doi.org/10.7891/e-manuscripta-159446
Observer : Marco Cagnotti
Seeing (SIDC) : 2
No group