A method found
An answer was staring me in the face.
Sidereal technology servo controller 11 displays the scopes RA and Dec down to the second.
So:- Go to the target
use the hand pad to frame the target
make a note of the position where you are working
when refocus is required slew to star & focus
go to target
use the hand pad to point the scope to the noted position
continue capture.
This worked well last night.
I use Cartes du ceil to find and slew to target and Nebulosity 3 for camera control. The Nebulosity preview was good on return to target and the two nigh't images stacked with no problem.
Now a camera tilt problem to address.
Chris
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