It was a short night at the River Ridge Observatory. I planned to stay until the Moon rose after midnight but the forecast mild winds turned into frequent moderate gusts the gave my telescope a case of the jitters. My target object needed to climb out of the muck so I started with this globular cluster in Sagittarius called M22. If you saw my image of M13 from the night before you will immediately notice that this one is less compact. Although globular clusters are all just big balls of stars, they don’t all look alike. In fact, there are nine classifications for them from less to more dense. This picture was just 20 or so two minute subs as the wind picked up toward the end.
