Messier 10 - The Globular Cluster in Ophiuchus

Another globular cluster in the constellation Opiuchus, and yes, we have a few more! Messier 10 is roughly 11 maybe 12 billion years old, which makes it ancient in my opinion, but not as old as Messier 9 and 13. Which are over 13 billion years old. It is a moderately concetrated globular cluster with around 100,000 to 200,000 stars in it.

From The Netherlands this cluster sits very low on the southern horizon. Which made it quite challenging to photograph. My telescope would not even guide at this altitude! Light pollution in the south also had a part in that by the way. So I had to fully rely on tracking to capture it.

I captured this during a Messier Marathon I did in August 2025.