A large survey among hobby astronomers showed: sun, moon and planets are the most popular targets for sky watchers. Even with small telescopes, Saturn's ring, sun spots and moon craters, for example, can be observed. The authors show in this practical guide book what exactly can be discovered there, what observational technique should best be used and what tricks are used by the professionals among hobby astronomers. Photography, too, is very popular thanks to web cams and digital cameras. Leisure-time astronomers can, by using special tricks, take pictures that are even more focused than those taken by professionals! Mario Weigand and Sabrina Geyer are graduate physicists and hobby astronomers. Mario Weigand's detailed pictures of the sun, moon and planets have made him popular among amateur astronomers.