Hevelius observing through refracting telescope
Hevelius observing through refracting telescope on stand fitted with quadrant and plumb-bob so altitude of object observed could be noted. From Johannes Hevelius Selenographia Gedani (Gdansk/Danzig) 1647
Picture No
13908572
Media ID
48404261
Size
3818px x 4500px
(3.3MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive
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1647 Altitude Astronomer Fitted Gedani Hevelius Johannes Measurement Noted Observed Optical Quadrant Refracting Selenographia Telescope
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