I tried out a compass app today..CSP was about 20 degrees away from where I have placed it with star trails...so not impressed..if you can take a long exposure so you get star trails and that gives one a pretty good idea. CSP is what all those semi circles the star make have as their center as we all know.
Before I got pole master I would site the camera (with scope preferably) to see the same as the view thru the polar scopeduring the day so later with star trails I would get pretty decent alignment.
Alex
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