Sunspot drawing of 1986-12-29

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https://doi.org/10.7891/e-manuscripta-142213



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1986-12-29
09:30
Hs 1304.6:1791
https://doi.org/10.7891/e-manuscripta-142213
Observer : Sergio Cortesi
Seeing (SIDC) : 2
No group