Also known as the Pleiades and the Seven Sisters, M45 is an open star cluster in the constellation Taurus. The cluster is dominated by young, hot blue stars and is passing through a remarkable blue nebulosity which is unrelated to the cluster.
William Optics FLT98 Refractor @ f5,QHY9 CCD Camera,Losmandy G11 Mount 4 hours LRGB. Processed using Nebulosity 3 and PSCS2.
full exif