Building a better refractor The spyglass-turned-telescope had limitations, some of which Galileo was able to design around. To reduce distortions such as elongations and blurriness caused by the ...

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 ...

What if you could find binoculars big enough to qualify as small telescopes? Get ready for the BT–127XL–SD apochromatic ...

9.53 inch Clark Refractor The main telescope is the original 9.53 inch refractor built ... Placing the tracking clock within an opening in the pier was a new design by Warner and Swasey. When fully ...

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 original instrument to occupy the dome was the 10.5-inch Bausch telescope, which was installed in the new observatory building in 1953. The 25-foot diameter dome was necessary to encompass the ...

Refracting telescopes use lenses - combining at least ... and a cradle assembly to hold the telescope tube, has a simple design and is easy to construct (if you choose to build one yourself).

Dobsonians are based on the reflector telescope design that sees a large primary mirror collect light then reflect it back into a secondary mirror (here's an explainer of the different telescope ...