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User Manual for Sky-Watcher 8" f 5.9 Collapsible GoTo Dobsonian Telescope Click to enlarge the picture
Contents of the user manual for the Sky-Watcher 8" f 5.9 Collapsible GoTo
- Product category: Reflectors Sky-Watcher
- Brand: Sky-Watcher
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Sky-Watcher Reflectors
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User manual for the Sky-Watcher 8" f 5.9 Collapsible GoTo contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Sky-Watcher product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Sky-Watcher user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Sky-Watcher product will considerably shorten its lifespan!
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Product description Sky-Watcher improves on the often unwieldy standard design of Dobsonians with their 8" f/5.9 Collapsible GoTo Dobsonian Telescope. It features a patented truss tube system that enables the front corrector plate/eyepiece assembly to be moved back and locked against the main rear tube to greatly reduce the size of the OTA for storage and transportation. This open OTA also has the benefit of reducing overall weight versus standard Dobs. To add another level of usability to the scope is a motorized ground-based rocker alt-az mount. Equipped with dual servo motors, they are controlled using the SynScan computer hand controller. This self-contained system features over 42,000 celestial objects with alignment assistance, guided tours and full go-to capabilities. Its dual encoders, coupled with the patented Tension Control Handle, enable users to manually move the scope without having to realign it.It features smaller 8" aperture parabolic mirror that captures enough light to make detailed observations of the Moon and planets, and still reach out past our solar system to discover brighter deep-sky subjects such as nebulae, globular clusters, and galaxies. Its smaller mirror gives it added portability, and the Crayford focuser's unique focusing mechanism gives it the ability to achieve tack-sharp focusing with zero back-lash that rack-and-pinion focusers generally are unable to achieve. - Optical Performance
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- 8" aperture
- f/5.9 focal ratio
- 1200mm focal length
- Efficient, highly reflective mirrors increase image brightness
- SynScan System
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- Motor type: DC Servo Motors
- Resolution:
- Motor encoder: 1,620,000 counts per revolution
- Main axis encoder: 11,748 counts per revolution
- Slew speeds: 1.0X, 2.0X, 8X, 16X, 32X, 200X, 400X, 600X, 800X, 1000X
- Tracking Rates: Sidereal, Lunar, Solar
- Tracking Mode: Dual Axes Tracking
- Alignment Method: Brightest-Star Alignment, Two-Star Alignment
- Database: 25 user defined objects. Complete M, NGC and IC catalog, partial SAO catalogues, total 42,900 objects
- Go-To Pointing Accuracy: Up to 5 arc min
- Focuser
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- Crayford-style, single-speed
- Accepts 2" eyepieces and accessories
- Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
- Includes 2-to-1.25" adapter
- Mount
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- Alt-az rocker design
- Teflon azimuth bearings
- Teflon bearings and tension clutch on altitude axis
- Tension control handle allows for smoother rotation to reduce vibrations and limit over-compensation
- Eyepiece & Accessories
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- Eyepieces:
- 4-element Plossl
- 1.25" diameter barrel
- 25mm yields 48x power
- 10mm yields 120x power
- Finderscope:
- 8x50 erect-image
- Right-angle viewing
UPC: 050234118002 In the Box Sky-Watcher 8" f/5.9 Collapsible GoTo Dobsonian Telescope - 8x50 Finderscope
- 10mm Plossl Eyepiece
- 25mm Plossl Eyepiece
- 2"-to-1.25" Adapter
- Limited 2-Year Warranty
Table of Contents
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Technical parametersSky-Watcher S11800 Specs | Optical Design | Reflector | | Aperture | 8" / 203 mm | | Focal Length | 1200 mm | | Focal Ratio | f/5.9 | | Eyepiece Barrel Diameter | 2" directly to focuser
1.25" with included adapter | | Diagonal | N/A | | Finderscope | 8x50 right angle erect-image | | Tripod | None | | Mount Type | Motorized alt-az | | Power Source | 10 - 15 VDC 1 A
2.1 mm plug | | Optical Tube Dimensions | Not specified by manufacturer | | Weight | Tube: 24.2 lb / 11.0 kg
Base: 33.0 lb / 15.0 kg
Assembled: 57.2 lb / 26.0 kg | | | | Package Weight | 85.5 lb | | Box Dimensions (LxWxH) | 42.0 x 36.0 x 15.0" |
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