M12 Globular Cluster in Ophiuchus
Taken 06-29-11 at Cherry Springs State Park, Pa. William optics FLT-110, QSI583wsg, AstroTech field flattener. 24 x exposures, 100 minutes total, LRGB (6 each) unbinned.
Tuesday, July 05 2011 @ 02:30 PM EDT