Title

Method of projecting the sun's image

Caption

Method of projecting the sun's image through a refracting telescope onto a screen in a darkened room (camera obscura) in order to study sunpots. From "Selenographia" by Johannes Hevelius (Gedani, Gdansk. Danzig, 1647). Engraving.

Info+

Photos12.com - Ann Ronan Picture Library

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP07113_010550P

License type

Rights managed

Available size

31,3Mb (2,8Mb) / 10,3in x 11,8in / 3085 x 3543 (300dpi)