Peter
If you have read my procedure for solar noon meridian true south it specifically mentions the line you mark on the ground is “True South” and in direct line ( or very close to it ) with the South Celestial Pole ( SCP )
Magnetic Declination or Deviation or what ever you want to call it has nothing to do with my procedure for finding true south. I adopted this procedure from a website link on finding True Celestial South and added some other procedures and information relevant to Astronomers
Cheers
Martin ( Startrek )
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