Sunspot instrument of Christoph Scheiner (1573-1650)
Summary
Engraving of an instrument to observe sunspots.
From "Rosa Ursina, sive sol ex admirando facularum & macularum suarum phoenomeno varius" by Christoph Scheiner (1573-1650)
Date
1626 - 1630
Source
Wikimedia Commons
Copyright info
public domain
