Sky-Watcher 8" f/5.9 Collapsible GoTo Dobsonian Telescope

Sky-Watcher 8" f/5.9 Collapsible GoTo Dobsonian Telescope

Sky-Watcher 8" f/5.9 Collapsible GoTo Dobsonian Telescope

B&H # SK8GTCB MFR # S11800
Sky-Watcher 8" f/5.9 Collapsible GoTo Dobsonian Telescope

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Product Highlights

  • Patented Collapsible OTA Design
  • 8" / 203mm Aperture
  • 1200mm Focal Length, f/5.9 Focal Ratio
  • 8x50 Straight-View Finderscope
  • 2" Single-Speed Crayford-Style
  • 25mm and 10mm Plossl Eyepieces
  • 8x50 Right-Angle Erector Finderscope
  • SynScan Computer Hand Controller
  • 42,000+ Object Database
  • DC Servo Motors with Dual Encoders
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Price: $1,050.00

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You Pay:  $950.00

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  • 1Description

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
  • 8" aperture
  • f/5.9 focal ratio
  • 1200mm focal length
  • Efficient, highly reflective mirrors increase image brightness
SynScan System
  • 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
  • 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
  • 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
  • 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 Two-Year Warranty
  • Table of Contents
    • 1Description
    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
    Packaging Info
    Package Weight 85.5 lb
    Box Dimensions (LxWxH) 42.0 x 36.0 x 15.0"

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