[Blue Skies (Jacquie)]

Originally Posted by Dennis G

Thanks Ashley and Alex. That's the style of information I was looking for. Now its try it and see.
To add to this I have had occassions where the image barely drifted and having set it up accurately it leaves one confused. Although my compass is top quality I realise there are many factors that can produce an error and apparently the smallest error is sufficient to produce drift.

Have you taken the local amount of magnetic variation into consideration? In the sw land division of WA the average magnetic variation is 4 degrees west - this means if you are using a compass you should point your mount 4 degrees to the east of the magnetic south to get true south. However if you use drift alignment you should correct for this anyway.