. English: Engraving of an instrument to observe sunspots. From 'Rosa Ursina, sive sol ex admirando facularum & macularum suarum phoenomeno varius' by Christoph Scheiner (1573-1650) . between 1626 and 1630. Christoph Scheiner (1573-1650) 508 Sunspot instrument of Christoph Scheiner (1573-1650)

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Photo credit: © The Picture Art Collection / Alamy / Afripics
License: Licensed
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Keywords: ., /, /., 1626, 1630., christoph, scheiner