I was curious about two things: First, could I get good shots from just above the tunnel openings at the south end of the subway train bridge going across Kymlinge? Second, could I make dark frame subtraction work?
The answer to the first question turned out to be "yes, but not quite as good as I hoped for". The short answer to the second one was "yes", and the long answer was so interesting that I wrote an article about it: Noise Removal Using Dark Frame Subtraction And Median Blur
It being a full moon, I had also hoped for some nice shots to bring back, and I think I got just that, too:
Just above the tunnel openings. I would have wanted to move bit to the left or right, but to the left were some trees, and to the right was a cellphone mast that can be seen to the right in the image. The camera is lifted atop a barbed wire fence, so going forward isn't an option.