is to be done individually or in a group of two or three people. It is carried out independently, though with the supervising help of a leader. The topics may vary from beginner's work, in which the participant gets introduced to the field of astronomy, to in depth astrophysics and actual research, usually carried out by a more experienced participant. At the end of the camp, the participants write an article about their project. The articles are bundled into a report book that is sent to the participants after the camp. Every group has its own leader. The themes of the working groups may differ very much, from theoretical (where the focus is on the mathematical and physical side of astronomy and astrophysics) to practical (where the focus on observational astronomy and the use of telescopes cannot be ignored). This is just a rough explanation, as there have also been groups that fit neither of the two explanations but focus more on background, like ones with a more philosophical character. The theme of the group depends very much on the leader attached to it and his/her background. Besides the working group leaders, three other leaders are also included in the leader team. The general coordinator takes care of supervision and is the contact person. The NAP-leader organises the Non-Astronomical Program, which is described later on in this article. The Darkroom leader is responsible for the photography in the camp. He or she also runs a darkroom in which black and white photographs are developed (mainly astronomical photographs). Free time During the free time, the participants are totally free to do whatever they want. Many use this opportunity to organise a workshop, in which they can share their passions with other participants. A returning workshop is on the use of a telescope. Also (sports) competitions are organised during the free time. Non-Astronomical Program The Non-Astronomical Program (NAP) is held daily in order to give the participants the opportunity to relax and to get to know each other better. NAP has its own leader that supervises the games and activities, of which many have become traditions in the IAYC. There are a few special NAP's: The movie Every year a movie is shot, which has a special topic, made up by the NAP-leader. Every working group gets a camera and has to shoot a short film related to the topic for one