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I'm also getting 17 arcsec RMS - 180 point model. Automapping is a breeze and fun to watch too.
It's VERY useful having accurate pointing for the reasons you mention - especially reliable and predictable automated guide star acquisition. Also, when automating, focus star acquition requires slewing and if you don't have accurate pointing when returning to your subject your data acquisition overall will slow down because time is wasted centering. If you don't center every sub and if all your subs are dithered by a ten arcmins because of poor pointing you'll end up cropping valuable camera FOV too.
Cheers, Marcus.
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