Classic telescopes are of interest to amateur astronomers for a variety of reasons. There are the dedicated collectors, but there are also many amateurs who love the nostalgia they inspire. These tele
In the 1980's, on the sidewalks of San Francisco, amateur astronomer John Dobson began showing throngs of people how to build and use large aperture scopes, often from scraps. The Dobsonian (Dobs) is
The refracting telescope has a long and illustrious past. Here's what the author says about early telescopes and today's refractors:"Four centuries ago, a hitherto obscure Italian scientist turned a h
