The first telescopes used lenses, known as refracting telescopes. Small instruments – whether for amateur astronomers starting out or people keen to look at distant mountains or spy on their ...

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 ...

you'll first need to decide that type of telescope you're after. If your search to the best telescope for stargazing has led to a world of jargon and confusion, we're here to help. A refractor or ...

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 ...

On clear nights, the rings of Saturn pop and the moon’s craters spring to life as Baton Rouge astronomy enthusiasts peer through one of the country’s few remaining Alvan Clark & Sons refracting ...