This set of files has been prepared by Jan Hollan, working at the Nicholas Copernicus Observatory and Planetarium in Brno. The author is a teacher of astronomy at the Faculty of Education of the Masaryk University in Brno, and a member of an environmental organization Veronica and of the Society for Sustainable Living. There are four kinds of files there: - programmes, - astronomical data (catalogues used by the programmes, and a star atlas) - texts on astronomy (mostly Czech) - texts on energy efficiency and global warming (Czech) - texts on (good outdoor) lighting and some images as examples, including a Czech translation of Good Neighbor Outdoor Lighing brochure (GNOL) - database of astronomical institutions in Czechia and Slovakia