Messier 92 (M92) is a globular cluster located in the northern constellation Hercules.
The cluster lies at a distance of 26,700 light years from Earth and has an apparent magnitude of 6.3.
Messier 92 is about 109 light years wide and has an estimated mass of up to 330,000 solar masses. Messier 92 is one of the brighter northern globulars – both visually and in terms of absolute magnitude.
With an estimated age of 14.2 billion years – almost the same age as the universe itself – M92 is one of the oldest clusters known and possibly the single oldest globular in the Milky Way. The cluster has an extremely low abundance of elements other than hydrogen and helium, with only 0.5 percent of the Sun’s metallicity.
I took this image over 6.7 hours (27 images of 10 minutes and 9 images each for RGB colors of 5 minutes)