This photo took a lot of effort, planning and time. I stayed out for about 2 1/2 hours to get these small star trails in the freezing cold of -8°C. Yesterday was the only night with clear skies and a new moon. Regardless of the light pollution in the city I was able to pull these shoot out because the public illumination of the Clock tower is turned off at midnight. That's a initiative to conserve and preserve the wild life in the city and also to reduce the waste of energy and light pollution.