M5 is a large globular cluster about 25,000 light-years away in the constellation Serpens. Just visible to the right of M5 (slightly below center) is the 14th magnitude galaxy IC 4537.
More detail from the same image is shown below.These images are at the same scale as the images of globular clusters M2, M13, M15, M71, and M92.
120 minutes L and 120 minutes RGB binned 2x2 on 2014-06-02 using a QSI 583 from northern New Jersey through an Astro-Physics 155mm refractor at f7.1. North is up. ©2014