Another globular clusters from the Messier catalogue in constellation Ophiuchus.
This one is about 14300 light years away and is around 11.4 billion years old.

Interesting fact about globular clusters: when searching for binary systems in globular clusters it seemed that there are much less of them than in star population in the galactic disk. However it turned out that the observations were initially concentrating on the outer regions of globular clusters for the simple reason that it was pretty difficult to resolve individual stars in the densely packed core.
In fact gravity in these globular clusters leads to sedimentation of heavy objects of the cluster into the core. So in general the abundance of binary systems and very large stars increases towards the center of globular clusters as confirmed in this one. The periods of binary stars in the core of globular clusters are limited to a few hundred years only, because longer periods means larger distances between the components of the system and weaker gravitational binding, so that the relatively close neighboring star systems would tear these systems apart.

Celestron EdgeHD8
F=2080mm
Baader broadband color filters RGB
FLI ML8300
R: 54x60sec
G: 50x60sec
B: 60x60sec
Total integration time 2h44m
Bortle 4-5

PixInsight