Well it finally cleared up tonight so I could test my 6" refractor and autoguider. It was a little brezzy but it didn't seem to affect the setup. I used ISO 800 and the telescope at F/9 for an effective focal length of about 1370mm. 8 ten minute exposures combined to produce the image below - taken through a LPR filter of course (my backyard is VERY light poluted). Click on the images for a larger view.
Below is a crop at 100% . . .