Gary, The barn door tracking mount design published in S&T has a motor. I made a few minor modifications to Gary Seronik's basic design, but I think it has about a 45-minute tracking capacity. I use a Nikon D70 DLSR, and I've never imaged for more than about seven minutes. The extra capacity is there in case I ever want to try film again. For the next three days I'm attending an intensive workshop for work, but If I find the time I'll send to you pics of the tracker, pics that I've taken with it, and the article from S&T. If I run out of time this week I'll be sure to do so next week. [Patrick, do we have a gallery alternative? I've been unable to follow every development over the past few days due to work.] For what it's worth, I think I put in about 30 hours total on the first telescope that I built, the 10-inch F5 Newt. I worked on it throughout the winter of 1988-89 while I also spent as much time as I could under the stars with my binos and planisphere. In February of '89 the scope saw "first light," a test view of M42 from the skylight in my attic bedroom. -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Gary Logan Sent: Tuesday, September 23, 2008 11:14 PM To: utah-astronomy@mailman.xmission.com Subject: [Utah-astronomy] Newbie continued... -clip- Kim ... Did you add a motor to your Barn Door tracker? And what is the longest you have tracked for a single picture? -clip- No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.7.2/1689 - Release Date: 9/24/2008 6:51 PM