X100T Fujifilm. 35mm equiv. t20 min @ f/5.6, ISO 800
Location: Colca Valley, Peru.
At first sight there was no enough light to focus at a distance so I found of great help the electronic meter, very accurate. I used a small lightweight tripod with a bottle of water hanging from it for stability. The relative low ISO relieved me from noise issues. It was a great balance to find a "dark" subject before the stars so you would not overexpose with a 20 min length.
As the photograph turned yellow because of the distant halogen lamps, I turned it to bw with lightroom and finished it up with photoshop.