2. Does it come with OR can it be used with the Autostar?

This scope is the basic SCT with a RA drive and not much else. If you want
GOTO, then buy a scope that comes with GOTO like the LX-90. If you try to
upgrade the LX-10 to GOTO it will end up costing your more money than a LX-90
and you will not have the reliability or capabilities of the LX-90.

That is if you want GOTO....

jon