This catalog of dounle stars is among the most comprehensive ever printed. With over 2,100 star pairings listed with coordinates, color, and interesting informa

Modern telescopes of even modest aperture can show thousands of double stars. Many are faint and unremarkable but hundreds are worth searching out. Veteran doub

Written specially for practical amateur astronomers who not only want to observe, but want to know and understand the details of exactly what they are looking a

Informative, profusely illustrated guide to locating and identifying craters, rills, seas, mountains, other lunar features. Newly revised and updated with speci

An accessible, informative guide to identifying constellations and other incredible features of the sky, whether you’re hiking, camping, or stargazing from yo