Astronomers have constructed telescopes of every kind - massive observatories designed to pick up faint traces of light ...

The first spectacles, designed to correct farsightedness ... improvements in the coming centuries. Designers of refracting telescopes figured out, for one, that by using two different kinds ...

Astronomy at Alfred University has a long history, dating back to the Civil War when the University purchased its first telescope, a 9-inch refractor made by Henry Fitz. Since the mid-1960s the ...

First, you are astonished by the view—Saturn ... Subsequent observers took the design of glass-lensed, refracting telescopes to great lengths, sometimes literally so. In Danzig, Johannes ...

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 ...