I'm not using a ToUcam (though that might be a possiblity in the future

), I'm using my familys video camera with my home made bracket.
As for length of time, that shot there is only about 15secs worth. I usually use longer, but it was fairly cloudy at my house at the time, so I had to be quick and get inbetween the breaks.
My camera doesn't have a gamma or saturation control. Only brightness. Tonight when I was just out I had a bit of a play around with the controls to see what combinations bring out more colour. I guess I'll see how it went later on when I process it. (Also while I was out there was a shadow of one of the moons - first time I've been able to see it thanks to the barlow

).
I also checked that the colour option was turned on in Registax. (I don't use K3ccd tools (yet

) ).