Hi all!
Can anyone recommend a reasonably priced book on double stars? It can be a book that has other stuff too. I find with DSO, I have been using NGC 2000 but I don't have anything equivalent for double stars. It is hard planning an observing sessions without information on how hard/easy a double star should be... I am a fairly newbie on doubles since I have always concentrated on clusters with the dob over the years.
Any book that gives the SAO numbers with the double would be helpful too!
THANKS!
(My library to date:
Hartung's
Sky Atlas 2000
NGC 2000
Herald-Bobroff Astroatlas
Astronomy with a small telescope
SKywatching by Levy
The night sky with binoculars by Patrick Moore
The southern sky by Reidy and Wallace)