Jupiter and Moons Do a Double Take

Jupiter and transiting moons, Ganymede and Europa
Sketch and Details by Serge Vieillard

Serge made these remarkable Jupiter sketches on the evening of August 19, 2009 while attending an Astronomical meeting in Valdrôme, France. He was using a 600mm scope and was sketching Jupiter and its moons and shadows as they crossed in front of the planet. The larger moon and shadow is Ganymède and the smaller one is Europa.

Jupiter and Moons Do a Double Take

Jupiter and transiting moons, Ganymede and Europa
Sketch and Details by Serge Vieillard

Serge’s remarks roughly translated are, “Then, Ganymède leaves the planet, Europe having about the same luminosity that the planet has, disappears between the two shadows which are oval in appearance due to perspective. The effect of relief is seizing, one feels the 3D, and the height of the satellites compared to Jupiter which are accentuated by the presence of shadows. Then Europe appears and cuts out in the darkest zones of the limb. It bites the shadow of Ganymède for it is its turn to leave the disc of Jupiter. At this time, the relief is total”.