 AstroClassifieds.com |
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For Sale By
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Views
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Date Posted
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Great Red Spot
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121
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Sat September 13, 2008
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Asking Price
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Condition
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Distance from you
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$495.00
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New
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Description:
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Announcing the new Sky-Watcher
Collapsible Dobsonian Telescopes.
Great Red Spot Astronomy Products in now a full ine dealer for Sky-Watcher USA. In stock and ready to ship are the new collapsible Dobsonian telescopes. Additional models arriving soon.
http://www.greatredspot.com/Sky-Watc...Telescopes.htm
Available in three highly portable sizes: 8-inch, 10-inch, and 12-inch.
Sky-Watcher is a global leader in astronomical instrumentation for the serious amateur astronomer. Are you searching for a fine instrument for astronomical pursuits? Look no further! Sky-Watcher offers the equipment you need at a value that makes sense in today’s economy.
Sky-Watcher 12" DOB
Deep Space Hero!
The Sky-Watcher 12" DOB is a true light bucket. If you are shooting for well-resolved, elusive 12th-magnitude fuzzies, you now have the power. Astronomy is a great hobby to share, and a SW 12" DOB makes you potentially the hit of many gatherings.
To ensure mechanical ease-of-use, SW uses a high performance Teflon bearing system in both axes combined with tension adjustment in altitude to facilitate setting the appropriate amount of friction, assuring smooth vertical and horizontal manual movement without free-play from small bumps or gusts of wind. This also eliminates the need to have a balanced optical tube as in an equatorial mount. Sky-Watcher's Teflon bearing system is preferable to the use of ball-bearings. Ball-bearings make unintended movement of the optical tube more difficult to control. Fortunately, at low power, deep-space objects leisurely drift through the field of the SW 12" DOB, so constant mechanical adjustment of the telescope's orientation isn't needed to keep objects in the field of view.
Sky-Watcher's revolutionary truss-support concept allows the optical tube's front and back cells to collapse together, aligning on the truss support rods which can then be locked down for easy and secure telescope transport. This one piece, low-hassle OTA design is mechanically simple and results in large aperture telescopes that can be reasonably handled and transported by one individual. This innovation gives Sky-Watcher users tremendous functional ease-of-transportability.
The Sky-Watcher 12" DOB utilizes quality components throughout. Pride of workmanship manifests itself in high quality standards of optical and mechanical fabrication. The polishing process for primary and diagonal mirror yields smooth mirror surfaces ensuring good contrast, and properly corrected optics show minimum alterations to the optical wave-front.
On each primary mirror, and elliptical diagonal mirror aluminum is vacuum deposited to the front glass surface and then over coated with hard quartz (SiO4). Additional layers of Titanium Dioxide (TiO2) and (SiO4) are then applied. Dust covers are provided to help keep your DOB clean when not being used.
The mechanical and structural components of the OTA exhibit rigid construction and outstanding stability. The mount construction is sturdy and rigid. Mount design, while simple, facilitates smooth motions about both axes. Quality accessories enhance the observer's viewing experience.
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Keywords:
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Sky Watcher Dobsonian Telescopes
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