Eighty experts in Theory, Modelling and Measurements of light pollution from 20 countries have participated. The conference has been organized by the Parc Astronòmic Montsec (PAM), Comenius University in Bratislava, Slovak Academy of Sciences, and the Cégep de Sherbrooke in Quebec in Canada.
During the Congress, has begun process of preparing the Montsec nomination for the certification of the Dark Sky Association (IDA), which will open the possibility of accessing to the astronomical tourism market.
One of the papers presented in the conference has been "First Night Sky Modeling Montsec protected area of light pollution and its sources" by Hector Linares, master of astrophysics at the University of Barcelona. To make this first model, the main sources of light pollution in the area have been evaluated, and in particular Lleida, the largest city near Montsec.
