The book "On the Construction of a Fifteen and a Half Inch Silver-Covered Mirror Telescope and Its Use in Astrophotography" by the author Henry Draper is a popular science work that reveals the principles of construction and use of a powerful optical instrument for the study of celestial bodies. The book describes in detail the process of creating complex equipment that allows you to explore space in incredible detail. The author talks in detail about the features and advantages of using silvered glass in a telescope and its possibilities in the field of astrophotography. This book will become an indispensable source of knowledge for everyone who is interested in astronomy and modern technologies of the science of the universe.