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.

THE Yerkes Observatory, which has recently been completed and inaugurated, contains in its instrumental equipment the largest refractor in the world, the diameter of the object-glass spanning 40 ...

Refracting telescopes use lenses - combining at least two, and as many as four, pieces of glass - as their objective (the primary light-gathering device). Reflecting telescopes use mirrors to ...

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 ...

FitzRandolph Observatory was constructed in 1934 to replace the Halsted Observatory. In 1966, a 36" reflecting telescope replaced the old 23" refracting telescope that had been in use since 1882.