Sky-Watcher 16" f/4.4 Collapsible GoTo Dobsonian Telescope

Sky-Watcher 16" f/4.4 Collapsible GoTo Dobsonian Telescope

Sky-Watcher 16" f/4.4 Collapsible GoTo Dobsonian Telescope

B&H # SK16GTCD MFR # S11840
Sky-Watcher 16" f/4.4 Collapsible GoTo Dobsonian Telescope

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Product Highlights

  • Patented Collapsible OTA Design
  • 16" / 406mm Aperture
  • 1800mm Focal Length, f/4.4 Focal Ratio
  • 8x50 Straight-View Finderscope
  • 2" Dual-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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  • 1Description

Sky-Watcher improves on the often unwieldy standard design of Dobsonians with their 16" f/4.4 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 an exceptionally large 16" aperture conical parabolic mirror to draw in copious amounts of light to make detailed observations of the Moon and planets, and still reach out past our solar system to discover dim deep-sky subjects that smaller scopes are unable to resolve. A conical mirror, as opposed to a standard parabolic, helps to reduce the mirror's weight while allowing it the ability to more evenly acclimate to the ambient temperature. Its f/4.4 focal ratio and two-speed Crayford focuser makes this an ideal choice for imaging. Its fast focal ratio enables devices to capture images in less time than slower scopes, while the unique focusing mechanism employed in the Crayford-style gives it the ability to achieve tack-sharp focusing with zero back-lash that rack-and-pinion focusers generally are unable to.

Optical Performance
  • 16" aperture
  • f/4.4 focal ratio
  • 1800mm 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, two-speed
  • Accepts 2" eyepieces and accessories
  • Coarse focus wheel for fast focusing
  • Fine smaller focus dial for precision focusing
  • 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 72x power
    • 10mm yields 180x power
  • Finderscope:
    • 8x50 erect-image
    • Right-angle viewing
UPC: 050234118408
In the Box
Sky-Watcher 16" f/4.4 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 16" / 406 mm
    Focal Length 1800 mm
    Focal Ratio f/4.4
    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: 72.0 lb / 32.7 kg
    Base: 105.0 lb / 47.6 kg
    Assembled: 177.0 lb / 80.3 kg
    Packaging Info
    Package Weight 214.0 lb
    Box Dimensions (LxWxH) 47.0 x 42.0 x 31.0"

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