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 ...

The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

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 Seestar S50 is an affordable smart telescope, operated solely via a smartphone app, that makes basic astrophotography simple and accessible ... this small refractor on a motorized mount ...

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 ...

They comprise a very simple finder scope ... more convenient to view images high up in the sky. After all, as a refractor telescope it uses a lens to form an image so it’s necessary to stand ...