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.

Due to the self-isolation we are experience, astronomical observation activities are reduced to those that we can carry out from our home with the instrumentation we happen to have with us.

This project proposes a study over time of the brightness and color of the night sky through measurements obtained at home with the help of DSLR cameras.