thanks for your comments Douglas. i'm still not sure of how best to shoot these, because as you can see if you look closely, there are a lot of rough blends with many of the images. i shot this with a Sigma 10-20mm lens, at 20mm with a pretty high ISO.
Nice synth, it would be interesting to see how this would look as a panorama, if you put the pictures through Microsoft ICE (http://research.microsoft.com/en-us/um/redmond/groups/ivm/ICE/
) and uploaded it to photosynth. It looks like you kept the camera quite stationary while taking all the pictures, so it might stitch with relatively few artifacts.