Re: Planetarium software
I use Cartes du Ciel (CdC) for GoTo. CdC integrates well with ASCOM to A-P ASCOM Driver and APCC.
With CdC, I use a similar process to Roland for centering elsewhere from the desired object. Particularly handy for multiple objects, e.g. galaxy clusters. I just pick a star at the desired center point, slew, and plate solve with local version of astrometry.net. I write down the star ID and I can use it multiple sessions.
CdC and AN are both free and robust