Sunspot drawing of 2019-4-29

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https://doi.org/10.7891/e-manuscripta-160606



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2019-04-29
07:30
Hs 1304.6:11506
https://doi.org/10.7891/e-manuscripta-160606
Observer : Marco Cagnotti
Seeing (SIDC) : 3
No group