light-years from Earth with an estimated age of about 78 million years. There are about 50 stars in this cluster, the brightest one being of magnitude +5.7. Wednesday, March 25, 2009 Messier 46, NGC 2438 Messier 46, NGC 2438 Celestron C6 SCT XLT Canon 350D Stock, Unfiltered Meade LXD75 GoTo Mount