Christoph Scheiner and a fellow Jesuit scientist trace sunspots in Italy in about 1625. Illustration from <i>Rosa Ursina</i> by Christoph Scheiner. p. 150. Scanned from original at Houghton Library, Harvard University. Call # GC6.Sch256.630r
Christoph Scheiner (1575-1650), author of book; artist/engraver unidentified.
1630
<a rel="nofollow" class="external text" href="http://id.lib.harvard.edu/aleph/002530501/catalog">GC6.Sch256.630r, Houghton Library, Harvard University</a>