Hi, The link below is to Abell 21 (The Medusa Nebula). This is a planetary nebula about 1500 light years away in the constellation Gemini. This is an interesting PN due to the asymmetry in its composition. This could be because it is a very old PN. I chose this framing because the upper right corner of the image contains open cluster NGC2395. Comments and suggestions welcomed. http://www.azstarman.net/PLN205.htm Bernard -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.