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Sky-Watcher is a commercial distribution company established in 1999 by the Synta Technology Corporation of Taiwan (Synta Taiwan). It markets telescopes and astronomy equipment, such as mounts and eyepieces , aimed at the amateur astronomy market.
A Dobsonian telescope on display at Stellafane in the early 1980s. A Dobsonian telescope is an altazimuth-mounted Newtonian telescope design popularized by John Dobson in 1965 and credited with vastly increasing the size of telescopes available to amateur astronomers. Dobson's telescopes featured a simplified mechanical design that was easy to ...
Spacewatch 1.8-meter Telescope [35] 1.80 m: 71″ Single: USA: Kitt Peak National Observatory, Arizona, USA: 2001 1.8m Ritchey Cretien reflector [36] 1.80 m: 72″ Single: Korea: Bohyunsan Optical Astronomy Observatory, Korea: 1996 Sandy Cross Telescope [37] 1.80 m: 71″ Single: Canada: Rothney Astrophysical Observatory, Alberta, Canada: 1996 ...
One major determining factor is type of light, or particle being observed including devices referred to as "telescopes" that do not form an image or use optics. Some telescopes are classified by the task they perform; for example Solar telescopes are all designs that look at the Sun, Dobsonian telescopes are designed to be low cost and portable ...
The 24-inch (610 mm) Dobsonian telescope brought by the Sidewalk Astronomers was unconventional, because most telescopes at such meetings tended to be smaller, on equatorial mounts, and designed for astrophotography rather than optical viewing. Surprisingly (and controversially at the time) Dobson's telescope tied in first prize for best optics.
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The six telescopes on the deck are a 5.5-inch TEC wide-field refractor, an 8-inch Moonraker Victorian refractor, a 32-inch Starstructure Dobsonian reflector, a 16-inch Meade ACF catadioptric reflector, a 17-inch PlaneWave CDK catadioptric reflector, and a 14-inch PlaneWave CDK catadioptric reflector. [9]
through a telescope, the brightest Messier objects are pale ghosts of their true selves; when it is full moon in a dark location the sky appears like this, but with the difference that the sky appears blue; limiting magnitude with 12.5" reflector is 14; 8 City sky 4.1–4.5 <18.00 the sky is light gray or orange – one can easily read
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