C8 working at f10, Hypered TP2415, 10 minutes, 5 min D19 dev.
Light travel time: 25000 years
M13 is one of the nearest globular clusters, and shines with a magnitude equivalent to a 6th magnitude star.
At the center the density of stars is 1 to 2 pr. cubic light-year corresponding to about 500 times the density of stars in the solar neighborhood.