As is now tradition, we went on a field seminar in September, this time to the valley of Sázava river. After an stimulating excursion to the Ondřejov observatory, we settled in a campsite in Sázava, where we listened to interesting lectures and viewed posters. In addition, we also went on a trip to Český Šternberk, visited the castle and dungeon, and some of us took the now traditional evening swim, this time in the Sázava river.