Method of projecting the sun's image through a
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
Picture No
13902060
Media ID
48387101
Size
2455px x 2820px
(1.7MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive
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1647 Danzig Darkened Gdansk Gedani Hevelius Johannes Method Obscura Onto Projecting Quadrant Refracting Selenographia Sextant Telescope
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