If you drive the camera and mount from a laptop, you can use plate solving to ensure you're in the right spot. Checkout out Astrotortilla as an example. It will work out where you're pointing and if you let it, will move the mount to the correct position and verify the move.
I also do the temporary ISO trick (from the laptop) just to see if the framing is close to what I want, as I often have to move it slightly from the plate solved position to get guide stars.
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