The Antennae Galaxies are an example of colliding galaxies. In better circumstances and longer exposure time it should be possible to see the antennae. Yesterday conditions were moderate with Moonlight (75%) and 100% relative humidity.
Setting: Nikon D7500 and TAL200K f/8.5; ISO 1600 and 21x60s exposure time. Stacking with DeepSkyStacker and final editing using CS4.
