I believe the main problem is the drivers, my webcam I think uses the same drivers and the exposure control is next to useless. I used a few filter on my DOB recently. I recently after a long break decided to get into webcam imaging again and with reasonable results.
http://www.iceinspace.com.au/forum/s...ad.php?t=65540
I used double polarising filter and IR filter for non barlow, and moon filter with IR filter with Barlow imaging.