Location of Photo:
Pommier Observatory, Portland, OR, USA
Date/Time of photo:
Dates: 2017-06-27 through 2017-06-28
Telescope/Mount: Celestron Compustar C14 with Starizona LF reducer/corrector (f/7.5) Camera: SBIG STL 11000M with Baader Planetarium L,R,G,B filters Adaptive Optics: SBIG AO-L at 8 Hz. Exposures: L:R:G:B=110:60:60:50 = 4 hours, 40 minutes total exposure.
M10 in the constellation of Ophiuchus has the honor of being one of the globular clusters in the Messier catalog that is nearest to Earth, lying only 14,600 light-years away. It is a Shapley-Sawyer class VII cluster, which means it has a densely populated but resolvable core that gives globular clusters the classic snowball of stars appearance.