Thank Barry, if you can release some of the code for me to look at I would be grateful.
It is 19:20 AEDT and there is news.
In the imortal words of Marty Feldman, "it lives, master"
As I sit in my slowly darkening shed, a glass of Dan Murphy 2008 by my side, there is hope !!
X, Y & Z axis all tracking and the vb.net timer call giving me a perfect 15 degrees per hour on the Y axis, or at least as perfect as I can measure it.
Tomorrow the real engineering begins with a trial run on mounting to the scope.
Stand by
Regards