Dobsonian

Dobsonian

(dob-soh -nee-ăn) A telescope with a simple but highly stable altazimuth mounting that can be constructed and used by an amateur astronomer. It swings very smoothly between side bearings and is mounted on a simple sturdy rotating platform. The mounting, pioneered in the mid-20th century by John Dobson, a US telescope maker, is popular for large-aperture short-focus reflectors.
References in periodicals archive ?
A popular altazimuth mount is the sturdy, boxy Dobsonian design.
His latest, a 9-inch long-focus truss tube Dobsonian, is robust yet disassembles into a few relatively compact modules for transportation.
The Dobsonian telescope is named after the American astronomy populariser John Dobson, who created the design in the 1960s.
This is a play on words, and involves taking collapsible, Dobsonian style telescopes to the top of Snowdon to raise money for charity.
The two men had settled on an Orion 8-inch Dobsonian telescope, just the right size for Josh to set up by himself.
Dobson is the inventor of the Dobsonian mount--a device that revolutionized the telescope, making large-diameter telescopes that once necessitated costly setups available to anyone with a few bucks and the will to gaze into deep space.
tonight, where he will present a slide show, then set up three Dobsonian telescopes in the parking lot for his audience to examine the moon, Jupiter and Saturn.
Some telescopes feature a Dobsonian base, an extremely stable, lazy-susan style of base that glides smoothly on Teflon bearings.
AFTER TESTING SKY-WATCHER'S 18-inch Stargate truss-tube Dobsonian for several months late last year, it's easy to understand why deep-sky observers proclaim that aperture is king.
Stewart Moore: a review of the deep sky year Robin Leadbeater: the spectra of dying stars Bob Winter: the death of stars Martin Lunn: dating Cassiopeia A and its implications Chris Longthorn: observing from New Mexico skies Andrew Robertson: building and using a large Dobsonian telescope
Undoubtedly the most common telescope type at any star party or telescope makers' convention like ScopeX, is the Dobsonian.
But at the Scarborough star fest last year, we were shown Pluto through a 14-inch Dobsonian telescope.