Caption
Historical astronomical map Theoria Lunae, Eius Motum per Eccentricum et Epicyclum Demonstrans, The theory of the Moon, which demonstrates its movement through eccentricum and epicycle. It is by Andreas Cellarius and was first published in 1660 in the famous star atlas Harmonia Macrocosmica and illustrates the Ptolemaic world view to explain the movement of the moon, in which the earth is at the center. This geocentric model uses epicycles, small circles that travel on larger orbits called deferents, to explain the variations in the speed and direction of the Moon's apparent motion in the sky. The map shows how the combination of these circular motions recreates the observed elliptical orbits and speed differences of the Moon, digitally restored reproduction from a 17th century original, authentic, exact date of presentation unknown
Date
1660
Credit line
Photo12/imageBROKER/Sunny Celeste
Reference
BRK26B12_044
Model release
No
Property release
No
License type
Royalty free
Available size
380,9Mb (42,3Mb) / 41,9in x 35,3in / 12583 x 10580 (300dpi)