M13 - The Great Globular Cluster in Hercules
M13 is arguably the greatest of the Northern hemisphere globular clusters and,…
The North American and Pelican Nebulae in Hydrogen Alpha
The North American Nebula and the adjacent Pelican nebula to the right of it…
The Perseus Galaxy Cluster - Abell 426
The Perseus Galaxy Cluster (Abell 426) is one of the most massive known…
Abell 2151 - The Hercules Cluster
Abell 2151 is a cluster of galaxies about 500 million light years away in the…