What am I looking at here?

[Xeteth]

I just purchased a used QHY8-Pro off one of the members on here which is my first CCD camera. I've downloaded the latest drivers and connected to the camera in APT - it all seems very straight forward and I'm able to set the gain/offset, cool the camera etc.

However, on some of the shots I'm getting a weird artifact of some sorts and I'm hoping someone might be able to identify what the problem is? It's the first image - clearly the white area in the top right of the image...

As a follow-up in the second image - on the right side of the image there is a black area - initially I thought something was wrong with the chip, but having done some research apparently this is the overscan area which can be used to assist in calibration. Have I got this correct?

Any assistance would be much appreciated!

[Atmos]

It does look a bit like the overscan region. If you’re using Ascom for control there should be a box in there for deactivating the overscan region. All it does is hide it. As long as your calibration frames have it and your lights do it doesn’t matter.

[Xeteth]

You were right on the money! Disabled it in the ASCOM settings and it's gone. Cheers!