Thanks for your replies.
Glen, very happy. I remember your comment how your ASI was much simpler to use than the cooled DSLR... Although this one is not finished I already feel the same.
Rowland, the camera does not have any cooling yet. That is the next part of the battle, to ensure no moisture ingress into the enclosure.
Colin, I had to crop out about 1/4 of the image on the right because of light leakage in the bottom right corner. I tried to make my backyard as dark as possible but stopped short of "killing" the neighbour's lights