I asked for images by photographers from all over the world. I sent out the task for volunteers to capture the light pollution from any major city. To try to keep an even playing field, the following capture parameters were stipulated: I did allow a couple of compromises, as some very kind offers came in from people who could not quite comply to one or two factors. That being said, it is still closely controlled to keep the results comparable. Canon EOS 400D (Rebel) DSLR 18-55mm Lens Tripod mounted (no Tracking) Full aperture (F/3.5) Full zoom out (18mm) ISO 800 30 Seconds No stacking or photo enhancing NO MOON! NO CLOUDS! Photograph the greatest concentration of stars visible from location as seen from within a 30 KM radius of the city centre. More photos are due in soon so keep watching! If you own a Canon EOS 400D Digital SLR (or Rebel XTI) camera and would like to contribute an image from your city, follow the capture instructions above and send them to [email protected] Here is the article page if you are interested. http://www.asignobservatory.com/world_light_pollution.aspx Baz.