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Hi and welcome,
I use this method for my star tracker.
Get a plastic disk or the top cover from a spray can, draw a line through its centre.
Get a orienteering compass and off set the inside lines with the magnetic offset.
Set the disk/can cover on top of a levelled tripod and set the compass on top.
Line up marked compass line with the centre line of the disk and one leg of the tripod (this will be your southern leg).
Slowly rotate the tripod so the needle of the compass points to the north/south on your compass outer ring.
Now you have your southern leg of the tripod pointed reasonably accurately to the scp.
Do some test exposures and adjust for drift.
Hope that helps
Bo
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