Thanks, KDR! I see the holes on the Astak. The Wisecomm doesn't have that but I think I found a place where I can mount it on a wall. The night vision on the Wisecomm sucks, by the way. But it has a great daytime picture and I really like the wide angle view.
The Wisecomm has the cable attached right to the camera, so it's truly weather proof. The Astak says it's weather proof, but it has a few inches of cable attached to the camera, and then you plug in the rest of the cable to that with RCA plugs, so I don't know what to do about keeping the connections dry in the rain. Even mounting it under eaves won't keep the rain out when there's a heavy wind, which is most of the time here. I wonder if wrapping the connections in electrical tape would waterproof it enough.