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Hi Malcolm
As a general rule, high resolution imaging of the Moon and Planets does not place as severe a demand on the mount in terms of the mount’s tracking and auto guiding capabilities.
Tracking is where the mount is just purring along at the sidereal rate.
Auto guiding is where the tracking is being controlled and corrected, in real time, by an auto guider CCD which makes continuous corrections (say every 2-10 seconds) to the tracking rate.
For long exposure DSO work, it is probably fair to say that the mount is more important than the optical tube that sits on it. So, I would look at the capability of any new mount in terms of its ability to auto guide satisfactorily for long exposure (5 to 10 minutes), long focal length (1500mm +) astro photography for when you move to DSO work.
Cheers
Dennis
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