Observation of Jupiter moons, March 1613

xantox, 22 April 2007 in Gallery

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In 1610 Galileo published the astonishing report of his first telescope observations,1 containing detailed drawings of the moon surface and his discovery of four “planets” orbiting around Jupiter (now known as the “Galilean Moons”). About two years later, he wrote an even more precise observation2 with more than a hundred drawings of their relative daily positions. This animation3 brings back life to Galileo’s observation, as made in Florence, March 1613.

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  1. G. Galilei, “Sidereus Nuncius” (”The Starry Messenger“) (1610) []
  2. G. Galilei, “Istoria e Dimostrazioni intorno alle Macchie Solari” (”The Sunspot Letters to Marc Welser”) (1613) []
  3. Massimo Mogi Vicentini, © Planetario di Milano, Italy []

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2 Comments to “Observation of Jupiter moons, March 1613”

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  1. 1

    genial! is not only a good idea to recreate what galileo saw, but is simply beautiful. thank you.


  2. 2
    Early Motion Pictures of Eclipses (1639-1880) | Griffonage-Dot-Com

    […] And that goes for early astronomical image sequences more generally.  The image sequence Jules Janssen captured with his “photographic revolver” of the transit of Venus on December 9, 1874, is often presented as a moving picture (see e.g. here).  Twenty-odd years ago, Albert Van Helden of Rice University also animated a thirty-six-frame sequence of sunspots as drawn by Galileo over the course of a month in 1613 (here; some other cool animations based on Galileo’s drawings, e.g., here and here, throw extra data into the mix and so aren’t “straight” actualizations of their sources).  Otherwise, the only animations of old astronomical image sequences I know about are ones I produced myself—check out my article “Moon Phase Animations (AD 650-1650),” which, despite the title, isn’t limited to moon phases. […]

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