PHD2, ZWO ASI120MM, Guide Camera Autoexposure
Background: I have my guide camera set to 0.5, 1, or 1.5 seconds exposure, but it seems obvious as you pan across the sky the camera is in autoexposure mode. As a bright star passes through the field, the background gets darker, and when passed, the background gets lighter and the noise level goes up (exactly like you'd expect autoexp to work). I go to the camera tab and there are auto exposure settings, but nothing that says manual exposure. I've never gotten auto to work, maybe it's my settings.
Question: Is there a definitive setting for manual exposure? Why are the camera settings greyed out? Are there settings that I am missing or glossing over?