Foreword -- Preface -- Chapter 1: More than one Sun -- Chapter 2: Why observe double stars? -- Chapter 3: The Observation of Binocular Double Stars -- Chapter 4: Double Star Sketching -- Chapter 5: Multiple stars and planets -- Chapter 6: Is the Sun a double star? -- Chapter 7: The orbital elements of a Visual Binary Star -- Chapter 8: Orbit computation -- Chapter 9: Ten famous double stars -- Chapter 10: The resolution of a telescope -- Chapter 11: Reflecting telescopes and double star astronomy -- Chapter 12: Simple techniques of measurement -- Chapter 13: Filar micrometer -- Chapter 14: The Diffraction Grating Micrometer -- Chapter 15: CCD Camera Observations -- Chapter 16: Lucky Imaging -- Chapter 17: The DSLR Camera -- Chapter 18: Astrometric Speckle Interferometry for the Amateur.-Chapter 19: Internet astrometry -- Chapter 20: How to measure the minima of eclipsing binaries; an amateur's experiences -- Chapter 21: Lunar Occultations -- Chapter 22: What the amateur can contribute -- Chapter 23: Some active amateur double star observers -- Chapter 24: An observing session -- Chapter 25: Some Useful Formulae -- Chapter 26: Star atlases and software -- Chapter 27: Catalogues -- Chapter 28: Publication of results -- Chapter 29: Brief biographies -- Chapter 30: References and Bibliography -- Index.

In these days of high-precision astrometric satellites, tremendous contributions to the science of astrometry are being made by amateur astronomers around the globe. This second edition of Observing and Measuring Visual Double Stars contains a significant amount of completely new material inspired by the work done by observers - particularly in the USA - since the first edition was published. Fifteen skilled and experienced astronomers have contributed chapters on their own specialization in the various fields. These include how to use the Internet to carry out precise astronomical measurement, an excellent guide to sketching double stars, and information on how to image double stars of unequal brightness. This new edition is the definitive book for those who are serious about this fascinating aspect of astronomy! Author Bob Argyle has been observing visual double stars for more than 40 years, some with the help of the world's biggest refractors, and has been director of the Webb Society Double Star Section since 1970.