Sky-Watcher 10" f/4.7 Traditional Dobsonian Telescope

Sky-Watcher 10" f/4.7 Traditional Dobsonian Telescope

Sky-Watcher 10" f/4.7 Traditional Dobsonian Telescope

B&H # SK10TD MFR # S11620
Sky-Watcher 10" f/4.7 Traditional Dobsonian Telescope

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Product Highlights

  • 10" / 254 mm Aperture
  • 1200mm Focal Length, f/4.7 Focal Ratio
  • 2" Single-Speed Crayford Focuser
  • 25mm and 10mm Plossl Eyepieces
  • 9x50 Straight-View Finderscope
  • Tension Control Handle
  • Floor-Based Manual Alt-Az Mount
  • Dual Axis Teflon Bearings
  • Altitude Tension Clutch
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Price:  $595.00

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Sky-Watcher S11620 overview

  • 1Description

Sporting the large light bucket users have come to expect from a Dobsonian, the Sky-Watcher 10" f/4.7 Traditional Dobsonian Telescope gives users performance at a reasonable price. Its large parabolic primary mirror is highly reflective and corrects spherical aberration to eliminate distortion across the entire field of view, especially at the edges. The four-arm secondary mirror bracket is made with 0.5mm thick fine supports to reduce light loss and diffraction spikes.

The large 10" aperture draws 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. Its f/4.7 focal ratio and 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. This 2" focuser will accept larger eyepieces so users can enjoy a truly immersive visual experience, and a 1.25" adapter is included to enable the use of the more common size eyepieces and accessories.

The heavy base weighs in at 25 pounds and provides a rock-steady platform with very low vibrations. This alt-az rocker mount features Teflon azimuth bearings and a tension clutch on altitude axis. Finally, the tension control handle allows users to adjust the settings allowing them to move the mount easily and smoothly by hand with minimal vibration and maintain its position when released.

Optical Performance
  • 10" aperture
  • f/4.7 focal ratio
  • 1200mm focal length
  • Efficient, highly reflective mirrors increase image brightness
  • 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
  • Single-speed rack-and-pinion
  • Accepts 2" eyepieces and accessories
  • Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
  • Includes a 2"-to-1.25" adapter
Eyepiece & Accessories
  • Eyepieces:
    • 4-element Plossl
    • 1.25" diameter barrel
    • 25mm yields 48x power
    • 10mm yields 120x power
  • Finderscope:
    • 9x50
    • Straight-through viewing
UPC: 050234116206
In the Box
Sky-Watcher 10" f/4.7 Traditional Dobsonian Telescope
  • 9x50 Finderscope
  • 10mm Plossl Eyepiece
  • 25mm Plossl Eyepiece
  • 2"-to-1.25" Eyepiece Adapter
  • Limited Two-Year Warranty
  • Table of Contents
    • 1Description

    Sky-Watcher S11620 specs

    Optical Design Reflector
    Aperture 10" / 254 mm
    Focal Length 1200mm
    Focal Ratio f/4.7
    Eyepiece Barrel Diameter 2" directly to focuser
    1.25" with included adapter
    Diagonal N/A
    Finderscope 9x50
    Tripod None
    Mount Type Alt-az rocker mount
    Power Source None
    Optical Tube Dimensions Not specified by manufacturer
    Weight Tube: 28 lb / 12.7 kg
    Base: 25 lb / 11.3 kg
    Assembled: 53 lb / 24.0 kg
    Packaging Info
    Package Weight 73.2 lb
    Box Dimensions (LxWxH) 50.1 x 26.0 x 25.1"

    Sky-Watcher S11620 reviews

    10" f/4.7 Traditional Dobsonian Telescope is rated 5.0 out of 5 by 2.
    Rated 5 out of 5 by from Wow Love it! This is my second telescope after nearly...gulp....40 years since last having one as a child. I had a 5 and knew what to expect so I wanted to bump up to something a little more powerful. When I first got it, I was very impressed by quality of ALL parts including the stand and how easy it was to get it all together. I had it all together in about 15 minutes. I even added 3 wheels on the bottom so I could wheel it around. After 2 days of clouds finally had a chance to use it. Nothing where I am to really look at but I was impressed at the clarity and admired some of the stars and how many I could see when they were NOT visible to the naked eye. PS - I am in the suburbs of a major city so lots of light pollution and hazy humid conditions, but still wow. Wife was NOT impressed with me showing her stars....looked like diamonds, and the Hubble does a better job she said but not impressed.....sigh!!! 3 days later I had what I thought might be Saturn rising on the horizon. I pointed the scope and was SATURN, and I mean WOW!!! That very instance I knew that this telescope was worth every dollar and more. It absolutely exceeded my expectations. I could see the rings clearly, the bands and a a few of the moons. It was spectacular and it was through a dense atmosphere low on the horizon with lots of light pollution. I can only imagine how much better it will look when its cooler out on dark nights in a few months. I summoned the wife, who reluctantly came out, with bug spray, long pants, hoodie to appease me and look at Saturn. Her response was WOW. Do NOT hesitate to buy this telescope!
    Date published: 2016-09-27
    Rated 5 out of 5 by from Perfect Sized Dob Rec'd on 6-16, assembled that afternoon with viewing that night. Performed rough collimation for views which were not so good. Next day replaced finder scope with 90 degree 9x50 and then used all my knowledge to tune the scope. Out last night and stars are now pinpoints. Jupiter views were fantastic at 150x with Baader Hyperion 8mm eyepiece. Great red spot was like Bozo's nose. Caught 1 moon just emerging under the limb and a second projecting a shadow on the planets surface. Just received GSO 32mm camera projection eyepiece and tried that. Wider field of view with great light gathering. Great eye relief with flat field. Stars were points. Heard it recommended to add a coma corrector for scopes faster than f5. I did and there is no need for visual use. GSO makes a perfect 1.1 mag field corrector. Don't do it as dobs are not photo platforms anyway. Just enjoy the beautiful views. This is an excellent telescope. The base is sturdy and transportable. The tunable alt tension adjusters work very nicely. Most new dobs remove the knob under the front rim of the scope. This still has it and is a great aid in positioning the tube. I highly recommend this scope to anyone interested in the night sky. You will be blessed. I have an 8 dob and this scope is better even in light polluted skies. a 12 scope is getting over the edge of what is manageable to transport and setup with ease. With a manageable scope you will use it more and keep your interest up. Here in Salt Lake about 30 miles west of town, our observatory complex was just gifted a 70 dobsonian built by a club member. The scope weighs 3000lbs and is 35ft long. The mirror is 900lbs. As mentioned this is a dob and it can be moved with one hand. This is size to the EXTREME. I would stay with a 10 inch.
    Date published: 2017-06-17
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    Sky-Watcher S11620 Q&A

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