Hi Duncan,
A nice variety of images, good to see the experimentation, learn from it.
Duncan, when imaging a planet, rotate the camera until the planet moves parallel with the long axis of the capture screen when you rock the mount in R.A. If your mount is properly polar aligned then most of the corrections that you make to keep the planet centred will only be in RA.
It is also probably a good idea to orientate South on top, which is the IAU convention.
Regards
Trevor
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