Globular Cluster in Hercules

The constellation Hercules contains two impressive globular clusters. One of these is the famous Messier 13. The other, Messier 92, is also a very fine target, and it is not very difficult to locate. It is roughly the same distance from Earth as Messier 13, but it is somewhat smaller and less impressive. However, the stars in its periphery are fairly easy to resolve, and as can be seen in this image, it has a very bright, dense core.

Magnitude 6.5
Apparent Size 11'
Distance (light yrs) 25,000
Right Ascension 17:17.1
Declination +43 08
Field of View 29' x 22'

Image details:  Exposure times of 30 minutes luminance and 18 minutes each of red, green, and blue, taken with an SBIG ST-8300M imager and a 14" Meade LX850 telescope at f/6.

June 2015