The Cambridge Double Star Atlas is back! It is the first and only atlas of physical double stars that can be viewed with amateur astronomical instruments. Completely rewritten, this new edition explains the latest research into double stars, and looks at the equipment, techniques and opportunities that will enable you to discover, observe and measure them. The target list has been completely revised and extended to 2500 binary or multiple systems. Each system is described with the most recent and accurate data from the authoritative Washington Double Star Catalog, including the HD and SAO numbers that are most useful in our digital age. Hundreds of remarks explain the attributes of local, rapidly changing, often measured or known orbital systems. The color atlas charts by Wil Tirion have been updated to help you easily find and identify the target systems, as well as other deep-sky objects. This is an essential reference for double star observers.

‘This comprehensive update of a popular star atlas amongst the double star community is to be welcomed. The catalogue has also been extensively and logically revised with more accessibility for the amateur telescope as the guiding theme.’

R. W. Argyle - Director, Webb Society Double Star Section, and author of Observing and Measuring Visual Double Stars

‘The Cambridge Double Star Atlas has long been a valuable resource to double star observers. This second edition has a much more detailed introduction describing binary stars, their orbits and properties, observing tools, and techniques. The double star target list has been expanded to include more information about each double star such as position angle, spectral types, and distances. Even if you already have the first edition, this second edition is a worthwhile upgrade.’

R. Kent Clark - Editor, Journal of Double Star Observations