From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for ...

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 ...

Building a better refractor The spyglass-turned-telescope had limitations ... Galileo ground a lens larger than he needed, for example. He then placed cardboard around the edges of the lens ...

McKim Observatory is an excellent example of a late 19 th-century American observatory ... Equatorial Room which is home to the star of McKim Observatory: a Clark Refracting Telescope with a 9.53” ...

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 ...