Thanks all
seems logical that it is an exposure issue, i will try a few settings out if i get some clear skies tonight. it definitely was not a matter of stacking up images that were not perfect. there was absolutely no detail visible. jupiter looked like a pulsating blob, like a massive star. i would have thought that the web cam wouldn't have had exposure issues, i guess that is the thing that has thrown me, i also cant figure out how to change the settings of the logitech web cam, e.g. frame rate, output file type etc, they just have this simple wizard which lets you set one of 3 preconfigured settings (small, medium or high res). Finally, the set up of the rig, it did take me a while to get a configuration that worked, i too had to take the diagonal out (of my refractor) when connecting my camera up but i am confident that the set up is okay. like i said, i am able to pass from out of focus to in focus to out of focus again, it just doesn't resolve very well. from all of the suggestions, i think that overexposure is the issue. i will let you know if i still have issues
