Webb Society Deep-Sky Observers Handbook Vol. 1 : Double Stars

This new edition of Double stars has been extensively revised. All chapters have been rewritten and, in most cases, extended. More intensive coverage has been given to micrometers and micrometric measures. The Catalogue section has been enlarged by more than 110 sets of measures. One hundred forty-three additional double and multiple star systems have been covered, making an new total of 665. For 200 double and multiple star systems, colors of the components have been determined and are now given.