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Keywords from Image Description:
Scheiners sun spots crop. Observations of sun spots Beobachtung der Sonnenflecken Scheinerssunspots UTC Scheinerssunspots en Christoph Scheiner de Christoph Scheiner derivative work Giac crop Giac Scheinerssunspots PDold original upload log This image is derivative work of the following images File Scheinerssunspots with PDold