I use an off axis guider and in my optical train for guiding I have Camera set to my guide camera and Guide Via set to my mount. I don't have an ST-4 cable connecting the guide camera directly to the mount and instead I let EKOS handle the guide pulses to the mount. Over the years I've read a number of recommendations favoring pulse guiding from the computer rather than using the connection from the guide camera to the mount. I'm sure there are a variety of opinions on that.

Best,
Fred

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