M14 - Globular Cluster in Ophiuchus

Working with the ASI1600mm Pro mono camera is fun, also a chore, but the results are really worth the time and effort.  Although my mount is still pretty finicky at the longer focal lengths of the EdgeHD-11, globular clusters are fairly bright and don't require a lot of exposure to get reasonably good results.

M14 (NGC 6402) May 10, 2018
EdgeHD-11 f/7  ASI1600mm RGB 45 minutes integration

Here is M14, a globular cluster in the constellation of Ophiuchus. At a distance of about 30,000 light-years, M14 contains several hundred thousand stars. At an apparent magnitude of +7.6 it can be easily observed with binoculars. Medium-sized telescopes will show some hint of the individual stars of which the brightest is of magnitude +14.

The total luminosity of M14 is in the order of 400,000 times that of the Sun corresponding to an absolute magnitude of -9.12. The shape of the cluster is decidedly elongated. M14 is about 100 light-years across.  (Wikipedia)

This image of M14 is a combination of 15 subs each of R, G and B, with an individual exposure of 60 seconds for each filter.