Many thanks everyone!
Heres a much deeper shot. Oddly enough no air, or space craft intruding this time despite the much longer imaging time.
Yes another warm night, but thermal noise didnt seem too bad.
Yep, I have the LPS filter simply sitting on top of the lens (it will sit there without touching the front lens element. In fact it fits underneath a lens hood that screws on with its own UV cover filter, but the idas filter will just sit there itself (as long as the camera is pointing upwards). Houghy says its possible to get step down rings to screw it on properly, but yes nebula filters do work well for wide field work.
This effort is 19x5 mins ISO 400, masked with 2x30 sec ISO 200, again with the lps filter and modded 350d, 50mm f3.5.
Larger version
here
Lots of light pollution, and lights from next door, shows what can be done from suburbia
