The Coma Cluster (Abell 1656)

The Coma Cluster (Abell 1656) is a large cluster of galaxies that contains over 1,000 identified galaxies. Along with the Leo Cluster (Abell 1367), it is one of the two major clusters comprising the Coma Supercluster. It is located in and takes its name from the constellation Coma Berenices. The cluster's mean distance from Earth is 321 million light years. (dixit Wikipedia)

To take this photo i used the following setup:
Scope: TS Optics Imaging Star 71
Mount: AZEQ6
Camera: Atik One 6.0

The total exposure is around 9 hours in may 2017 over 4 nights. As my camera is black & white i use RGB filters to build the chrominance layer, and stack several photo on each filter to maximize signal over noise.

80 photos of 5min flitering Luminance except UV
8 photos of 5 min filtering Red
8 photos of 5 min filtering Blue
8 photos of 5 min filtering Green

I used the software Prism 10 to manage the capture, the pre-treatment (Removing offset, dark and flat). The stacking and the post-treatment was done with Pixinsight and at the end Photoshop.

Technical detail of the photo here: https://www.astrobin.com/301579/?nc=user

If you want more information, ask me in comment !

I hope you enjoyed it! If it is the case, resteem and follow me to see more astrophotography.