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

Incidentally, the largest telescopes on earth are reflectors and not refractors, because of the difficulty in grinding and processing a large lens required for a refractor telescope. If you’re a ...

Refracting telescopes Refraction is the bending of light as a result of its passage from one medium (such as air) to another (such as glass). A refracting telescope makes use of this property with ...

The LT 80AZ is a refractor-style telescope, which, in combination with its relatively small 3.15-inch aperture, means it’s best suited to looking at the moon and planets within our own galaxy.

Features and Benefits: This refractor telescope offers bright, clear images, suitable for both terrestrial and celestial viewing. It comes with multiple eyepieces and an easy-to-use Altazimuth mount.

A 2.4-inch refracting telescope, for example, should never use more than 120-power (the rule of thumb is 50-power per inch of aperture).

They are home to the largest refracting telescope in the world. This thing is 40 inches in diameter, so big hunks of glass that are 40 inches in diameter ground to this perfect shape that light ...

Yerkes Observatory near Lake Geneva is more than 125 years old, is the site of numerous scientific discoveries, is home the ...

Best telescope deals Gskyer 70mm Aperture 400mm AZ Astronomical Refracting Telescope — $100, was $130 Gskyer 600 x 90mm AZ Astronomical Refractor Telescope — $268, was $320 ...

Bausch & Lomb Company gave the University of Colorado a 10.5-inch refractor, formerly the property of Carl L. Bausch. The telescope was designed by George Saegmuller, a B&L designer, in 1912.

The nonpro t group plans to restore the 36-foot-long, 24-inch diameter refractor telescope and make it the centerpiece of a science education center with a planetarium and observatory.