Does a video show a massive metallic UFO orb over a volcano in Mexico? No, that's not true: The round object in the video is ...

But not all telescopes are made equal. In fact, there are two distinct categories that telescopes fall under, and some sub-categories within these: refractors and reflectors.

For a structure like the Green Bank Telescope there’s a lot involved,” Joshua Moore explains. “The telescope itself has over ...

These scopes also are known as “compound” telescopes and are hybrids that have a mix of refractor and reflector elements in their design. The first compound telescope was made by German ...

The diameter of the objective lens defines the size. Reflector telescopes are formally known as Newtonian Reflectors since they were invented by none other than Isaac Newton in the 17th century.

Compound, or catadioptric, telescopes combine lenses and mirrors for a compact option, suitable for both planetary and ...

In a reflector, light enters the telescope and reflects off the main mirror at the bottom and back up the tube. Before it can escape it's intercepted by a flat, secondary mirror which directs the ...

Was $2,999now $2,699at BHPhoto Unistellar eVscope eQuinox 114mm f/4 GoTo Reflector Telescope $2999 now $2699 on B&H.

The Celestron StarSense Explorer DX 130AZ reflector telescope was already discounted but now the Black Friday deals have discounted it further for a saving of $80 on this beginner-friendly telescope.

Also, reflector telescopes can have fuzzier images than refractor scopes, leaving people wondering what they were actually seeing. “Regular folks couldn’t care less about a fuzzy snowball 2 ...

Choosing the best telescope for the money depends to a large extent on what you hope to see. If you want to scan distant nebulas, you can pay $1,000 and up, and it will still be good value. If you ...

Hardly! In a past column (April 2011), I sang the praises of my first astronomical telescope, Edmund Scientific’s Space Conqueror, a 3-inch f/10 reflector.