Vixen VMC260L, STL11K
2 hours L, 1.5 hours R, 1.9 hours G, 2.6 hours B (Total time about 8 hours)
March 2010
CCDCommander, MaximDL, CCDStack, Photoshop CS4

The two galaxies, NGC4038 and 4039, are undergoing a glancing collision. As they swing past each other
long tidal tails of stars are torn from each.

Our galaxy and M31 will undergo a similar interaction in 3 billion years or so
The Antennae Galaxies