Upper image: "Protuberanzen, beobachtet von Winlock 20 April 1872" Lower image: "Protuberanzen, beobachtet von Winlock 13 April 1872"  "Sonnen Protuberanzen"  Chromolithographs of sunspots observed in 1872.

Astronomy, Sonnen Protuberanzen, Winlock

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Upper image: "Protuberanzen, beobachtet von Winlock 20 April 1872"
Lower image: "Protuberanzen, beobachtet von Winlock 13 April 1872"

"Sonnen Protuberanzen"

Chromolithographs of sunspots observed in 1872.

Horizontal centerfold.

Images together: 24.5 x 19 cm ( 9.6 x 7.4 ")

 


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