The ESO/ESA Astronomy Exercise Series are made for students, using observations from the NASA/ESA Hubble Space Telescope and the ESO telescopes. The Series contain background explanations about certain observations and tasks for the students to work out. For the teachers there is included a teacher's guide in every Exercise book with more explanations, further literature and solutions to the tasks. English Version Exercise 1-7 + Introduction and Toolkit. OFFSET PRINT. Full-colour.