Founded as the Depot of Charts and Instruments in 1830, it became the first national observatory of the U.S. in 1844. This book is a story of the relations amon... » 

Founded as the Depot of Charts and Instruments in 1830, it became the first national observatory of the U.S. in 1844. This book is a story of the relations among space, time and navigation. It is also the story of the development of the Master Clock of the United States, of star catalogues and almanacs, of numerous discoveries and adventures along the way, and of the history of technology. «