Ah right - I kind of didn't elaborate the full picture. I run GPSD, I connect INDI after polar alignment and it sync's time and location on the CGX, then I go to mount and check time/location is correct and choose last alignment.
After that I do the process of plate solving.
I use the latest Nexstar HC firmware that you can get teamcelestron.com/ - note this is the bleeding edge, and is usually ahead of what you can get from the normal Celestron site, but anyone can sign up and request access to the firmware files for their equipment.

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