Patrick, That mount is incredible. Nice comparison images to demonstrate what is possible. I am amazed that the mount is that good, especially given the focal length. I would love a chance to image with you sometime. I just need a clear night and an invitation (hint, hint). :) Cheers, Tyler _____________________________________________ -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Patrick Wiggins Sent: Tuesday, April 15, 2008 5:29 AM To: utah astronomy listserve utah astronomy Subject: [Utah-astronomy] Unguided exposures: Pushing the limits A guy on one of the other email lists I'm on posted a question about how long an exposure one can make without guiding. That sounded like a challenge... :) I've posted some of my test images to the UA gallery. All shot with the C-14 at f/11 which equates to about a 4,000mm focal length (hence the tiny field of view). http://gallery.utahastronomy.com/main.php?g2_itemId=10620&g2_page=1 Up through 6 or 7 minutes looks ok but there is just a touch of elongation in the stars in the longer exposures. I'm not too bothered by that though since I seldom go over 5 minute without guiding. Ok, so now that I've got the polar alignment worked out maybe Tyler can show me how to take pretty pictures. Carpe Noctem! patrick p.s. For those new to the UA Gallery, you do not need to register in order to look at the pictures (more than a few have thought registering is necessary). _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://gallery.utahastronomy.com Visit the Wiki: http://www.utahastronomy.com