Well, thanks for the advice everyone, however; I just cannot get any further with this.
I am unable to detect any stars in the field after it is set up. I can get Canopus on the chip and using the Bahtinov mask can get both cameras focused well and all works in harmony.
Using 2x2 binning etc, I point it to an object I wish to image and I just cannot find any stars. In frustration I popped the Lodestar into my guide scope and voila, how many stars do you want? I slipped a par focal ring onto the camera when focused in the guide scope so on clear moonlit nights I can keep chipping away.
Thanks again, everyone, your input is much appreciated.