When white light passes through a curved lens ... underwent improvements in the coming centuries. Designers of refracting telescopes figured out, for one, that by using two different kinds of ...

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 ...

McKim Observatory still houses many of its original instruments, including a 9.53 inch Clark Refractor telescope, a meridian transit telescope, and a gravity driven chronograph. Missing from the early ...

Chinese scientists are working to set up the world's largest refracting telescope in Tibet Autonomous Region for observing stars and planets. Deputy Director of the regional department of science and ...