“Estimating the relative contribution of streetlights, vehicles, and residential lighting to the urban night sky brightness”
The brightness of the night sky varies depending on the lights on the street, the movement of cars and the activity of the offices. There is a sharp increase in darkness when, by law, the ornamental lights go out at 12 at night. This project tries to detect variations in this bright produced by the lock down to stop the advance of covid-19. From this difference the human contribution in sky brightness can be estimated.