I can relate to the ETX being "fiddley" with a camera hanging off of it!
You can use the PowerShot on the full disk of the moon (afocal through a 25 - 32mm plossl should be nearly perfect). Whatever image size you settle on just needs to be reasonably repeatable on each evening, although you will likely need to adjust for size and orientation anyway because of where the Moon will be in the sky on each sucessive day. Take a few shots each evening and use the best one from each night when you assemble the animation.
Depending on the capture software you use, you can either capture a series of short .avi's over a specified period, or you can just tell the capture software to take one frame at a specified interval and create an .avi from that (which is actually easier if the seeing is good, because when it's done, there's less work to make it an animated gif or whatever).
All you need is your webcam, a barlow, and your laptop!
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Re: Lunar Photo Commentary through Feb 15th
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