Ce manuel propose des exercices autour de l'astronomie destinés aux élèves des facultés et des observatoires. Il couvre une variété de thèmes, allant des mouvements du soleil, de la lune et des étoiles, à l'utilisation des instruments astronomiques. Les étudiants et les amateurs d'astronomie trouveront dans ce livre une ressource utile pour approfondir leurs connaissances et leur compréhension de cette discipline. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.