Astronomy on a Budget with Binoculars is an introduction into stargazing with a simple pair of binoculars. It is also an experiment: It is available as EBook and as real, softcover book via Amazon (in colour or black and white, and with a small observation log – you can find the links on the right hand side), but you can also find the whole content on this webpage (with adaptions to the medium) . You can find the star charts from the end of the book here as PDF for download. The test chart for the resolutio
Starry Sky for Binoculars is available as paperback and as DRM-free EBook on Amazon .
Sport Optics by Alan Hale from Hale Optics is an excellent guide for purchasing and using binoculars, spotting scopes or rifle scopes. It really helps you to find the perfect instrument for you. It is avaiable as ebook and printed book from Amazon and as ebook from other ebook-publishers.