NGC 520 (Arp 157) – Psc
Initially catalogued as NGC 520, this weird object is now known as a pair of colliding galaxies, also named Arp 157. The merging galaxies show a long tail of stars and an evident band of dust; calculation indicates that the collision started some 300 millions of years ago and continues today. The estimated distance of NGC 520 is about 100 millions of light years
The image above is the average of seven, 300-seconds exposures, remotely collected with the PlaneWave 17″+Paramount ME+SBIG STL-6303E robotic unit part of the Virtual Telescope Project. All the images were unguided.
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