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010550

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.

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Filename
010550.jpg
Copyright
Irish Photo Archive
Image Size
2455x2820 / 1.6MB
Contained in galleries
historical photos 2
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.