Thanks guys. I never got an unfiltered shot without cloud, but here it is anyway.
I don't think it's necessarily faded, I think this lens makes everything a tiny dot, except for the edges where I should have stopped down more to stop streaking.
This is one case where bloated stars may actually make it more aesthetically pleasing! I have an old deep sky filter which bloats stars. If fine I should try it tomorrow to see if it helps.