Thank you very much Martin and Glen.
I suppose why I found the experience frustrating was there is no computer in the mix initially as Asiair Plus makes the lap top un necessary and you could think everything therefore should just work...the really annoying thing was the older ZWO 2600 worked and the new one did not.. same cables etc...so it was reasonable to conclude the new camera was a dud...why would one work and not the other...
I have been busy with other matters and have not tested everything again,( now that it seems to work,) on the eight inch...I will as soon as I can.
Thanks again I really appreciate both your input as although I don't use a lap top now when imaging I do use it to test the gear and do things like adjust focus between the main camera and OAG and back focus etc so everything you provided was relevant.
I will probably get the walls painted black today...Having done the ceiling I am committed really plus I purchased more paint
It is just so weird the effect of just the black ceiling...maybe it will be a good place to meditate ...
Thanks again.
Alex