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Solar noon shadow stick method , maybe old fashioned and crude but it works and enabled me to find a fairly accurate true south line at both my imaging sites ( permanent line scored in the pavers )
I found solar noon time on Stellarium at both sites when to mark the line , so easy. I did the same thing ( true south line and digital inclinometer) for a friend who has my old 10” push nudge Dob, he usually finds his reference star and then main target in a minute using the Az Alt co ordinates off Stellarium
For SCP I just use a digital inclinometer to set local latitude
At both sites , first alignment Star usually ends up in the FOV , then some minor centering , then Synscan PA routine ( 2 or 3 iterations ) and we are done !!
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