Bill Tschumy replied to the topic 'Optical trains subtleness' in the forum. 2 weeks ago

Don't you have a guide camera? You can't guide using the main camera while also using it for imaging.

I have two trains, one specifying the image camera. This is set as the one to use in the CCD tab. I also have a Guide train that specifies the guide camera as the Camera. It also specifies the mount as the "Guide via" device.

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