
This video shows how we see Jupiter and its Galilean moons (Europa, Ganymedes, Io, Callisto) through an amateur telescope, a 6 inches newtonian reflector. Actually a fourth moon can be seen at the end of the footage. Conon EOS 450d (Rebel XSi) 25mm eyepiece for projection 150mm at F5 telescope 2010-09-26 23h38mUT Galilean moons are the four satellites of Jupiter discovered by Galileo Galilei: Io, Europa, Ganymede and Callisto. They are the largest satellites of Jupiter, visible even with low-power telescopes. They were spotted by Galileo on January 7, 1610, watched for several days and described how they were orbiting around Jupiter. This discovery reinforced the heliocentric theory of Copernicus. Initially, Galileo Jupiter's called I, II, III and IV, in order of their proximity to the planet, but their current name was given by the astronomer Simon Marius in his Iovialis Mundus, a few years later. A trivia noted by S. Laplace is that Io, Europa and Ganymede are in a dynamic configuration called Laplace resonance: for every lap around Jupiter's Ganymede, Europa makes two, and each rotation of the latter, Io makes other two (ie, a triple type resonance 1:2:4). It is unknown so far whether this is a primary setting.
Jupiter
Galilean moons
Astronomy
Astrophotography
telescope
EOS
450d
Europa
Ganymedes
Io
Callisto