Bernard, a good indication of a sharp M13 shot is how clearly the companion galaxy is rendered. Youve nailed it, the galaxy shows sharp details and coloration. Clear Skies, Chris Schur's Web Portal: http://www.schursastrophotography.com --- On Wed, 4/6/11, Bernard Miller <bgmiller011@xxxxxxx> wrote: From: Bernard Miller <bgmiller011@xxxxxxx> Subject: [AZ-Observing] Picture of M13 - The Hercules Cluster To: az-observing@xxxxxxxxxxxxx Date: Wednesday, April 6, 2011, 10:53 PM Hi, Here is my latest picture, M13: The Hercules Cluster. It is a globular cluster in the constellation of Hercules. It is about 25,000 light years away and has a diameter of about 84 light years. I included two versions of this image. The first one is the full frame image and is notable for the distant galaxy NGC 6207 visible in the upper left of the image. The other image is a cropped version showing M13 closer up. <http://www.azstarman.net/M13.htm> http://www.azstarman.net/M13.htm <http://www.azstarman.net/M13_CROP.htm> http://www.azstarman.net/M13_CROP.htm Barney -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.