Observing And Measuring Visual Double Stars [with Cdrom]

Double stars are the rule, rather than the exception: our solar system, having a single sun, is in the minority. Enormous numbers of wide, faint pairs areunder-... » 

Double stars are the rule, rather than the exception: our solar system, having a single sun, is in the minority. Enormous numbers of wide, faint pairs areunder-observed or not observed at all. This text shows where enthusiastic amateur observers can best direct their efforts. «