Joshua Trees are just fun to photograph. Their bizarre morphology, when silhouetted, is something reminiscent of the days when dinosaurs roamed, and you can play with this in all sorts of ways...This shot was taken looking toward the southwest as the moon was getting ready to set and some lights from a neighboring city provided the orange glow. While on tripod, I was at ISO 1600, at 30 seconds, and at f5.6. I didn't want star trails with this image as it's all about the cloud window allowing us to peak through to the stars. Any longer than 30 seconds and the stars and clouds would trail too much. So, aperture had to be kept wide. The background trees are a tad soft, but it seems to work.