M. : Peace, 1967. — 537 s. The book is the 2nd volume of the multi-volume series "Stars and Star Systems", the task of which, according to the editor of the series J. Kuiper, - give a complete and in-depth overview of the current state of all major fields of astronomy. Two volumes of this series have been translated into Russian: I - "Telescopes" and VI - "Star Atmospheres" The proposed volume is devoted to methods of astronomical research. After a general review of the detection of astronomical objects and description of radiation receivers of celestial bodies, the book describes photographic and photovoltaic methods for recording the spectrum, the method for determining radial velocities and the technique of spectrophotometry. The article considers the subtle methods of detection and observation of magnetic fields of celestial bodies, describes the methodological foundations of modern photoelectric photometry with high-sensitivity equipment .. The reader gets acquainted with polarization measurements and infrared techniques, as well as with various methods of application in astronomy of various image amplifiers. A number of chapters are devoted to astronomical instruments and their observation methods. In the final chapters, methods for determining the orbits of different types of binary stars are discussed.