M10 (NGC 6254)
Magnitude: 6.4
Distance: Aprox: 14,300 light-years
Constellation: Ophiuchus
Diameter: 83 light-years
Star Count Aprox: 100,000
Messier 10 has a spatial diameter of 83 light years which is about two-thirds of the apparent diameter of the Moon, but its outer regions are very dim. Its bright central region spans roughly 35 light-years. The best time of year to observe the two clusters is in the months of May, June and July.
Taken 5/24/18 in Toledo, Ohio by Russell Kille on a CPC 1100 with Hyperstar @ F2 and ZWO ASI294MC Pro camera