Spherical Astronomy provides a comprehensive treatment of the fundamental principles of positional astronomy.The text focuses on the principles of spherical astronomy and the theory of fundamental astronomical observations. Discussions are made on topics such as the celestial sphere and the nature of the reference systems of astronomy; the geometric aspects of the celestial sphere in relation to geographic position; systems of time measurement based on the rotation of the earth; and the inertial reference system.Astronomers and astrophysicists will find the book highly insightful.