The original instrument to occupy the 25-foot diameter dome was the 10.5-inch Bausch refracting telescope (f/15.5) installed in the brand new observatory in 1953. Bausch & Lomb Company gave the ...

Unlike refracting telescopes (whose lenses are very expensive ... The modern Dobsonian telescope also plays its part in astrophotography, and if you're looking to photograph a supermoon, for ...

Well, any of us who has ever looked through a telescope could say the same, for the two principal types in use today were developed by giants: the refractor by Galileo and the reflector by Newton.