Since 26 April 1957 when he presented the first episode of The Sky at Night, Sir Patrick Moore has become one of the most prominent figures in the field of amateur astronomy. A prolific writer, broadcaster, and researcher, Sir Patrick continues to provide inspiration to multiple generations.

http://en.wikipedia.org/wiki/Patrick_Moore

Watch The Sky at Night on-line 
http://www.bbc.co.uk/science/space/spaceguide/skyatnight/proginfo.shtml