Corresponding to the escalating "aperture fever" that has gripped amateur astronomy for several decades, an 8" diameter is now generally regarded as the minimum entry-level aperture for serious observing. The low cost, large diameter, and fast focal ratio of the 8" Sky-Watcher Dobsonian make it an ideal dedicated telescope for wide-field, deep-space observation of faint galaxies, nebulae, and star clusters. The low-power dramatically captures wide swaths of sky in a single view. Galaxies and nebula appear to pop out of the heavens as bright, expansive masses of stars, gas, and dust.
Sky-Watcher 8" Collapsible Dobsonian Reflector Telescope
Observing with the 8" Sky-Watcher Dobsonian Telescope...
If you haven't observed through a high-quality, wide-field Dobsonian like the Sky-Watcher 8" before, you are in for one of the sweetest experiences in amateur astronomy. Imagine the exhilaration of opening a clam and discovering a pearl...well, the sky is full of pearls, astronomical pearls. While they won't make you rich in the financial sense, for amateur astronomers at least, observing the many pearls of deep-space is a rich and even exhilarating pastime. Deep-space observing is a catharsis for the soul that renders the mundane insignificant, and reconnects us with our inner child so that we can experience the awe and wonderment of exploration and discovery.
The summer sky is aglow with beautiful deep-sky objects. In the constellation of Sagittarius several of the sky's most prominent emission nebulae can easily be seen through your 8" Sky-Watcher telescope. The Lagoon Nebula (M8) is a rich aggregation of dust and gasses illuminated by its youthful central stars. This is an area of star formation, the universe giving birth. Located nearby is the smaller, but very beautiful Trifid Nebula (M20). These two nebulae can actually be seen in the same field of view with your 8" SkyWatcher and the proper eyepiece. The magnificent Swan Nebula (M17) is also located in Sagittarius. It is named the Swan for its resemblance to the stately bird. The sky's most awesome globular star cluster, M13, is located in the constellation Hercules, a bee-hive of thousands of stars swarming about a central core. Globular clusters are no longer being formed in the universe, so you are observing fossil light, a glimpse back in time. This is the brightest object of its kind and always a treat to view. The globular cluster M92 is likewise very interesting and can also be found in Hercules.
The winter sky holds several stunning objects often referred to in popular culture, not just astronomy. Our closest external galaxy, the beautiful Andromeda, can be seen almost in its entirety within one eyepiece field. Winter's Great Orion Nebula (M42) is the brightest emission nebula in the heavens. While it can be seen with the naked eye from a dark location, it is nothing less than spectacular in an 8" Sky Watcher Dobsonian.
Observing with a Dobsonian has been described akin to shooting ducks in a barrel because it is so easy to find your target. Just swing your Sky-Watcher Dobsonian to the quadrant of sky to be searched, and scan the vicinity. The included 8 x 50mm right angle optical viewfinder provides both magnification and light-gathering to help narrow your search. The standard-equipment backlash-free 2" Crayford Focuser insures ultra smooth focusing adjustments, and the multi-coated, 4-element Plossl eyepieces (25mm and 10mm) provide a spacious 52º Apparent Field of View.
Sky-Watcher Dobsonians Epitomize Ease-of-Use...
To ensure mechanical ease-of-use, Sky-Watcher USA 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 Sky-Watcher 8" 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 8" Dobsonian 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.
The Sky-Watcher Dobsonian Telescope Uses Quality Components Throughout...
Aluminum is vacuum-deposited to the front glass surface on each primary mirror and elliptical diagonal mirror and then over-coated with hard quartz (SiO4). Additional layers of Titanium Dioxide (TiO2) and (SiO4) are then applied. Dust covers help keep your telescope clean when not in use.
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.
Sky-Watcher Product Number: S11700
- Additional Information
SKU SW-S11700 UPC Code 50234117005 Manufacturer Sky-Watcher Telescope Series Sky-Watcher Dobsonian Optical Design Newtonian Reflector - Open Truss Mount Type Dobsonian Cradle Warranty 1 Year Warranty Telescope Aperture 8" Telescope Focal Length 1200mm Telescope Focal Ratio f/6 Highest Useful Magnification 472x Limiting Stellar Magnitude 14 Optical Coatings Aluminum Dew Shield Included? No, Not Necessary Eyepiece(s) Included 10mm, 25mm Optical Tube Outer Diameter 205mm Length of Optical Tube 44.5" Optical Tube Weight 24.2 lb. Tube Color or Finish Gloss Black Finder Included 8 x 50 Optical Finder Mount Weight 34.39 lb. Alignment Procedure N/A Objects in Database N/A Counterweights Included N/A Power Adapter Included None - Does Not Require Power Tripod Type Included None, Not Required Total Telescope Weight 58.84 lb.
- Included Items
- 8" f/6 Collapsible Dobsonian Telescope
- 8 x 50 RA Finderscope & Bracket
- 2" Crayford Focuser
- 1.25" Adapter
- 10mm Plossl Eyepiece (1.25")
- 25mm Plossl Eyepiece (1.25")
- Dust Cover
- Eyepiece Tray
- Questions & Answers
- Support / Downloads
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