This is an original Hyperstar (no collimation or camera angle adjusters) and SX H9C OSC CCD image of the Coma cluster of galaxies. This galaxy cluster was made famous by Fritz Zwicky who studied the cluster, and by applying the virial theorem to star motion in the galaxies he deduced that there must be some form of Dark Matter present.
There are a number of people attempting to re-write history by stating that Vera Rubin discovered Dark Matter during her work in the 60s and 70s where she also applied the virial theorem to star motion in galaxies. Unfortunately she was around 30 years late in coming up with that one.