Camera - Nikon D3100
Lens - Nikkor 18-55 f3.5/5.6 @ 18mm
Exposure - 100 x 30 second photos
Aperture - f6.3
ISO - 800
White Balance - Incandescent
For this photo I used DIYCameraBits Camera Control 5.2 tethering software to control the exposures. I took one hundred 30 sec exposures and then combined them using startrails.de software.