Peter that is essentially right. The main reason why Anthony, Trevor and myself use objectives over 14" is for light gathering capacity. There is a significant resolution difference to a 10" of course, but the main objective is light. More light means more frames per second and a faster exposure which freezes the seeing at any one moment.
Large scope do have cool down issues but this can be worked around with TEC (peltier cooling), just like
I did here a few years ago. And then you can get results
like this and
this and
this and
this. Seeing permitting of course.
So the bottom line is that large sensors have trouble with high download speeds and the DFK41 just does not have the frames per second to be useful as a planetary camera. It is fine for the moon and the sun because the sun does not rotate quickly and the moon remains static and you can go for several minutes collecting data. The planets on the other hand need a smaller sensor to fill the roll. These will have a fast frame rate with smallish pixels. Something like the DFK21 or DBK21 or the DMK21 are perfect for this job at present. Until large well depths and large sensors can be downloaded at fast frame rates these cameras will have to do.