Dr. Caitlin Casey, an observational astronomer, has recently joined the physics department at UC Santa Barbara. She co-leads the C.O.S.M.O.S. collaboration — a project distinguished by its deep ...

If stargazing is on your summer checklist this year, Walmart has an amazing deal on the Juyafio Telescope. Originally $300, the telescope is priced at $64 under Walmart’s Flash Deal sections, which ...

Born June 29, 1868, in Chicago, George Ellery Hale revolutionized American astronomy by, among other things, championing the ...

Most skywatching is at night. Joe Guzmán (second from left) brought his astronomy crew to Lovelace Park to look at the sun with Evanston residents on the ...

Sharing news, features, and sports with the Dripping Springs community. Support local news and subscribe here: ...

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The riverboat captain is a storyteller. Captain Don Sanders shares the stories of his long association with the river — from ...

The Abotec 80090 Telescope makes that dream a reality. With a 90mm aperture and 800mm focal length, this refractor telescope offers a crystal-clear view of the night sky, perfect for both budding ...

The library, which has eight branches in the city, is now offering borrowable refractor telescopes. According to the library, the refractor telescope is “perfect for terrestrial and celestial viewing ...

Adams says that when it comes to aperture size, the type of scope matters–whether you choose a reflector or a refractor-type telescope. For refractors, he recommends a 3-inch aperture at a minimum.

Up front is a four-inch (102mm) diameter objective lens, which is unusually large for a refractor telescope. Most telescopes of this size and above are reflectors, using mirrors rather than lenses.

No effort was spared to make this the ultimate refracting telescope. For example, although the objective is 180mm, its fully baffled tube is 8 inches (203 millimeters) across.