Note: The insert picture was processed on it's own so that I could bring out more detail.Abell 2199 is a galaxy cluster that is part of the Hercules galaxy supercluster.Abell 2199 contains at least 88 and probably of the order of 200 galaxies. It is also one of the classic cooling flow clusters. Here the gas in the center of the galaxy cluster cools rapidly causing hot gas (a few million degrees) to flow into the center and then cool emitting lots of X-Rays.
NGC 6166: Magnitude11.9
Apparent Size2.2' x 1.7'
Distance (light yrs)410 million
Right Ascension16:28.8
Declination+39 33
Field of View35' x 26'
NGC 6166 is at a distance of about 410 million light years, this gives a size of 225,000 lights years for NGC 6166. Despite its brightness compared to the other galaxies in Abell 2199 it is certain that it is a member of the cluster and one of the largest galaxies known.
Photo of NGC 6166 published in 1961. It is amazing how amateur astrophotography has advanced!! 
Comments