Object name: BERKELEY071
Berkeley 71 is an open star cluster in Auriga about 1.2 degrees southwest of M36. It is listed at WEBDA as being about 12,700 light-years distant and rather old for an open cluster at 631,000 years. Being in the winter Milky Way you might suspect there's some reddening from galactic dust. You'd be right. It is listed at 0.88 magnitudes of reddening. The combination of its age and reddening explains the unusual lack of blue stars and the rather large number of red stars seen in the cluster. Most blue stars have lived their lives and are long gone from the scene being just very faint white dwarfs lost in the distance and reddening. The reddening then removed even more blue light giving the cluster its rather odd color range.