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 ...

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.

It was soon realized that what was to become known as chromatic aberration was a limiting factor in refracting telescopes, and that this could be overcome by making lenses with longer focal length ...

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 ...

View Deal Gskyer Telescope 70mm: was $130 now $97 at Amazon Save 25% on the Gskyer 70mm Alt-az refractor telescope at Amazon. This refractor comes complete with all the accessories a beginner ...

The Beaverlab Finder TW2 is not a smart telescope, but its design makes it unique. This 82mm/3.2-inch refractor is one of a kind in that a lightweight plastic camera can be attached to it in place ...

The latter is to make it 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 behind the optical tube ...

The second floor consists of the Equatorial Room which is home to the star of McKim Observatory: a Clark Refracting Telescope with a 9.53” objective lens made by the renown Alvin Clark and Sons. The ...