Deep Sky
M108

NGC3556
Barred spiral galaxy
Constellation: Ursa Major
A member of the Ursa Major Cluster, cluster of galaxies and known as a loosely wound arms of a spiral galaxy (SBbc), it was discovered by Pierre Mechain in 1782. 
Quite a bit seems to be known about this galaxy.  The mass is some 125 billion times that of the sun; it has between 290 globular clusters: and there are 83 separate X-ray sources coming from this bad boy.  Lastly, the supermassive black hole is estimated to be approx 24 million, that’s million times the mass of our sun.
10 stacked
10 sec ea
Date: 03-12-13