I have only been using the polar scope to align. It is remarkably accurate. I have only had very slow drift north, something like 1/2 to 1 arcsec/min. I could improve this with a drift align but it easily guides out. I now have 3 divots in my lawn where the scope goes each night and the alignment only needs tweaking each time I use it. Having said that my lawn is currently under water so I'm not too sure about the life of my current divots.
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