[mithrandir (Andrew)]

Originally Posted by julianh72

Or use your smartphone - set it on top of the OTA, and use an app to point it due south using the compass, and set the inclination to match your latitude.

http://julianh72.blogspot.com.au/201...ning-your.html

The compass will be affected by any magnetic material within a few metres - like steel telescope tubes or mounts.