The star diagonal fits into the telescope’s focuser, and the eyepiece fits into the star diagonal. Most manufacturers that provide complete refractor telescopes include a star diagonal. 3.

Lick Observatory’s Elinor Gates walks back from the Grand Refractor telescope, Tuesday, March 7, 2023, saying this is the most snow she’s ever seen atop Mount Hamilton in her 25 years as the ...

Refractor telescopes use a series of glass lenses to collect and focus the light. They are excellent for viewing the moon or larger (or closer) planets.

Take care when cleaning the lenses, glass and mirrors of any telescope. The materials are sensitive and the slightest scratch can lead to irreparable damage. by: Charlie Fripp, BestReviews Staff ...

The types of mounts for telescopes Just as important as the kind of telescope is the type of mount used to support it. A good mount must be strong enough to carry the telescope’s weight while ...

Refractor to reflector, Schmidt-Cassegrain to Maksutov-Cassegrain - this is everything you need to know about the different types of telescopes. When you purchase through links on our site, we may ...

Shop beginner friendly reflector and refractor telescopes for stargazing, plus tips to safely view the 2024 total solar eclipse with a telescope.

They were the first kind of telescope developed, and their history goes as far back as the 1600s. Their operating principle is relatively simple. There is a curved lens at one end to focus the ...

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

Refractor telescopes excel at viewing objects within our own solar system, such as the moon, Mars or Jupiter. However, the lenses can struggle with the faint light of distant objects, which won ...

Celestron NexStar 102SLT Computerized Telescope This telescope tube attaches to the motorized GoTo mount to automatically turn toward one of the 40,000 stars, galaxies and nebulae in its database.