The nighttime and early morning images were all shot handheld. The cameras used were 2 Nikon D800 DSLR bodies, with Nikkor AFS 80-400mm f4.5-5.6G ED and 16-35mm 1.4G ED lenses. Most of the images used only available light. Exposures times for the non-flash shots were generally 1/5 or 1/6 of a second. ISO was set at 1600 for all images. Some images were tweaked using the SmartDeblur 2.4 Home Edition Program.
The lenses have the Nikon vibration reduction feature which is rather amazing.
I hope that that answers your question.