I’m not quite sure I understand what is going wrong, so all I can do is run through my set-up - my dome is the Pulsar system, so there might be differences in detail, but that should be all. I assume that you have your dome control box connected up to your observatory PC by USB and you have installed any NexDome control software plus the ASCOM driver. Now with my system, all I ever need to do is put the dome dimensions into SGPro, I don’t need to specifically populate information into the ASCOM driver (note the same is true with NINA which I have also used successfully). The way that I set things up in SGPro is via and Equipment Profile, in this example using an ATIK 383L with broadband filters, etc.
The “Other” tab has a box that lets you select the Observatory ASCOM driver, then in my case I need to click the “Settings” button to bring up the following:
This tells SGPro which COM port the control box is located on - I know that from Device Manager for instance, but the Search button found the right COM port. Having established the right connection path, the next step is the Slave Settings:
These are my numbers (in mm obviously - if they were inches it would be sitting on top of a mountain in Tenerife or Chile or somewhere!). Remember to save your profile (having already set up your camera, focuser, etc., as appropriate) as you’ll need it to set up the sequence. You do this using “File>New Sequence with Profile” or Ctrl-Shift-N and selecting the profile that you created. One of my sequences looks like this:
Note that I’ve expanded the section on the right which shows the Observatory populated with the Pulsar Dome as set up in my profile. If I click on the wrench next to it, it will bring up the COM port dialogue which will have the correct COM port already selected, and to connect to the dome you now click on the grey button to the right of that which should turn yellow to show the link has been successful. Once you have your telescope connected, the final step is to make sure that the two are working in sync:
Make sure you check the “Slave to Telescope” box in the Observatory Panel, otherwise nothing will happen when the scope moves.
You’ll find some information in the Help file under Control Panel>Other Equipment>Observatories.
I hope that this has helped.