Cassiopeia (pronounced kass ee oh pee’ uh) the Queen is one of the first constellations amateur ... because it will dim the many faint background stars. Both the open star cluster M52 (top ...

In addition to the cluster, note the uniform background glow caused by distant, unresolved Milky Way stars. Next up is the second (and last) Messier object in the constellation, open cluster M103 ...