I built a nine inch "Dobsonion" type scope many years ago, whch incorporated many of his ideas, and have spent countless hundreds of hours since observing the h

I built a nine inch "Dobsonion" type scope many years ago, whch incorporated many of his ideas, and have spent countless hundreds of hours since observing the heavens and the amazing objects that can be seen from my own back garden. About ten years ago I met John Dobson at a small meeting. He was a nice guy with an infectious enthusiasm. One of these days I'd like to have a go at "pushing glass" and making my own mirror, rather than purchasing one as I did the first time.