This just in. A supernova has been discovered in M51. It is currently at magnitude 13.5, but it's brightening, and should reach the mid 12's. This will likely be the brightest supernova in many years. It is located 15" west and 67" south of the nucleus. This puts it in the first spiral arm, roughly opposite of NGC 5195. There is not much information available at this point, but a good place to start is David Bishop's site: http://www.rochesterastronomy.org/supernova.html#2005cs Tom -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.