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The above Quicktime movie is a time-lapse series of images of Saturn on the night of March1, 2006. I setup the Starfish camera's control program to guide on the star in the lower, center of the image. The exposure time was set to 5 seconds since I wanted to be able to capture not only the moons of Saturn but the fainter guide stars in the background star field. That ended up way over-exposing Saturn itself. Anyway, I set up the auto-guider for 5 second exposures and guide corrections. I also setup the program to store away the most recent guide star shot every two minutes. With the setup in place I let the system run for almost 7 hours. I had to stop it at that time since the scope was about to crash into my mount's pier. I ended up capturing around 200 picts taken every two minutes.
I then used iMovie to make a Quicktime movie of the time-lapse sequence and the result was very interesting. You could see the movement of Saturn's moons orbiting the planet as well as the motion of the Saturn system across the field of background stars over the 7 hour period.

Scope - TAK FSQ106 at prime focus, Starfish camera with Micron MTM001 image sensor, Image cropped ~66% of original size.

Start time - March 1, 2006 7:15PM PST End time - March 2, 2006 1:55AM PST

Screen shot showing my guiding session. That guide star was mag 7.9. Seeing was ~3/5. My guide errors were < 0.25 RMS pixels for most of the 7 hour session. The scope used was a TAK FSQ106 with a 530mm focal length at prime focus. AP900 mount.
Photo taken by my imaging buddy Paul Winn.
I was using an AP900 mount for the imaging session. I finally had to stop the thing after ~ 7 hours of tracking Saturn since the scope was about ready to crash into the pier. As you can see it tracked well past the meridian as it was. Temperature was around 30 degrees Fahrenheit that night. Observing site was in the mountains above Santa Barbara, CA
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