planetary imaging with a 4" refractor?

I've had reasonable success doing deep-sky imaging with a StellarVue SV102EDT refractor and a DSLR, and would like to try my hand at lunar and planetary imaging using high-frame-rate video with postprocessing as shown in this forum.

It seems debatable whetehr this is feasible using a small-aperture (102 mm) refractor because there may not be enough light gathering to support a 4x PowerMate and a webcam.

What are your thoughts on this? Are there specific camera choices that should be sought or avoided to make this work?

Thanks for any help!
Scott

I think its quite feasible. The light per pixel
will only depend on the F-ratio. If you stay
around F/20 to F/30 like everyone else, you'll
be fine. You just won't resolve as much detail
as a 10" or 14". The usual webcams / DMK /
Lumenera cameras should be OK.