M45, The Pleiades
The Pleiades, a.k.a., the Seven Sisters, is an open star cluster in Taurus. The stars are all young, less than 100 million years, and were once closer together. It’s no longer an active star-forming region. The nebulosity is not a remnant of its star-forming days, but is merely a dust cloud the cluster is passing through. These are hot and fast-burning stars, expected to last only another 250 million years or so. They’re about 450 light years away.
Shot 24 October 2009; Mt. Tamalpais State Park, California; ISO 800, Exp 60 min (24 x 2.5 minutes), f/5.2, Canon EOS 5D & Televue NP127is. Post-processing with ImagesPlus 3.0 and Photoshop CS4.
Copyright 1997-2013, by David Wilton