"This introduction to the night sky is for amateur astronomers who desire a deeper understanding of the principles and observations of naked-eye-astronomy. It covers topics such as terrestrial and astronomical coordinate systems, stars, and constellations; the relative motions of the sky, Sun, Moon, and Earth; leading to an understanding of the seasons, phases of the Moon, and eclipses. Topics are discussed and compared for observers located in both the northern and southern hemispheres. "--Jacket.