M13 – Globular Cluster in Hercules
M13 is a favorite subject for many observers, myself included. I’ve looked at it from the backyard with my own eyeball. I’ve seen it through my 8×50 binoculars. I’ve looked at it in a Dobsonian with a photomultiplier. This globular cluster contains over 100,000 stars that are all held in this fuzzy ball by the …