M100 is a magnificent face-on spiral galaxy in Coma Berenices, distant of roughly 60 million light-years, that is some 1,5 million of million times farther ! And even so, they succeded to meet... at least from our perspective : on the evening of last March 26th, Ceres crossed in front of M100 in our sky, in a rare event not to be missed. The picture below was taken at the beginning of the pass, with Ceres just "touching" the most external spiral arm of the galaxy. It is visible as a very bright spot at the upper left of the galactic nucleus.
Canon 60D at prime focus of SCT Meade LX200 16" reduced at f/6, total exposure 10 minutes. North is up