Sky-Watcher 8" f/5.9 Traditional Dobsonian Telescope

Sky-Watcher 8" f/5.9 Traditional Dobsonian Telescope

Sky-Watcher 8" f/5.9 Traditional Dobsonian Telescope

B&H # SK8TD MFR # S11610
Sky-Watcher 8" f/5.9 Traditional Dobsonian Telescope

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Product Highlights

  • 8" / 203 mm Aperture
  • 1200mm Focal Length, f/5.9 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: $385.00

Instant Savings: $30.00

$0.00 Tax Collected Outside NY and NJ

You Pay:  $355.00

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  • 1Description

Sporting the large light bucket users have come to expect from a Dobsonian, the Sky-Watcher 8" f/5.9 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 8" 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. Its f/5.9 focal ratio and Crayford focuser makes this an ideal choice for imaging. Its relatively 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
  • 8" aperture
  • f/5.9 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: 050234116107
In the Box
Sky-Watcher 8" f/5.9 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
    Optical Design Reflector
    Aperture 8" / 203 mm
    Focal Length 1200mm
    Focal Ratio f/5.9
    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: 20 lb / 9.1 kg
    Base: 25 lb / 11.3 kg
    Assembled: 45 lb / 20.4 kg
    Packaging Info
    Package Weight 61.0 lb
    Box Dimensions (LxWxH) 49.0 x 26.0 x 17.0"
    8" f/5.9 Traditional Dobsonian Telescope is rated 5.0 out of 5 by 8.
    Rated 5 out of 5 by from Great first Reflector Excellent introduction to reflectors. Much better than the tiny Celestron /Orion beginner scopes and way cheaper than other equivalent 8. I researched a lot on DObs before deciding to pull the trigger on this one. It offered the best Aperture to $$ ratio hands down compared to any other scope. The only drawback is the weight of the Dobsonian mount. The particle board makes it quite heavy to lug around, but then again, that's probably the price to pay for it being so low cost. The most important thing in a telescope is the mirror and this one gets you 8 inches of it for the lowest price.
    Date published: 2016-04-20
    Rated 5 out of 5 by from Exceeded Expectations Assembly was quick and easy and all required tools are included. The instructions and users guide are complete and easy to follow. On the first night I am observing the setting crescent moon immediately after dusk in awesome, sharp detail and catching excellent views of stars, clusters, nebulae like the Orion nebula the Plaedies and Betelgeuse as never seen before. I'll be checking out jupiter in a few hours when it rises just before dawn. The Dobsonian alt-az mount is far easier to use than expected.
    Date published: 2016-11-03
    Rated 5 out of 5 by from Very good for the money I am impressed with the quality of the components considering the cost. I am very impressed with the optical quality. this scope is the real deal! B&H delivered in 4 days! most happy with my purchase and would recommend to anyone.
    Date published: 2015-11-30
    Rated 5 out of 5 by from Great telescope Easy assembly, great instructions, wonderfully easy to use (I'm in love with Dobsonians!), nothing to not be pleased of!
    Date published: 2016-03-13
    Rated 5 out of 5 by from Superb 8" telescope with a bargain price Pros: 1)� 8" telescope at $300s price level.� What a bargain! 2)� Easy to handle and relatively light.� Only 45lbs.� I have no problem moving it around by just holding the base.� 3)� Optics quality is high. Stars are crispy clean in view (after collimation during the first time usage).� 4) Crayford-style focus is very easy to use.� No pullback.� I have no problem to focus under 300x or even higher. � 5) It is very convenient to adjust finderscope position.� Cons: 1)� Primary mirror locking screws are Philips type instead of the knobs. �� The latter sound to be easier to use. Anyway, I love this telescope.� I am glad that I did not buy 10" or even larger dobs as the weight of this 8" one is just for me to handle easily.
    Date published: 2017-12-23
    Rated 5 out of 5 by from Excellent telescope for your money, would highly recommend I've had this telescope for almost 2 years now, and I love it. After plenty of researching beforehand, I decided to buy this one as my first telescope as it had, by far, the largest aperture for the money. The mount, while heavy, is quite smooth and works well enough for an alt-az Dobsonian mount. The whole assembly is quite big, measuring in at just over 4 feet tall with the optical tube completely vertical. This makes it a bit of a chore to get it outside for use, but you get used to it pretty quickly and I can get it up and running in just a few minutes now. I usually have to take the optical tube off of the mount to carry it outside, which is easily done by unscrewing the black knobs on either side. I lay the tube on something like a couch, bring the mount outside where I want it using the attached handle, then go in to fetch the tube. The process can be expedited with two people, but isn't necessary. Not exactly a grab and go, easy to transport telescope, but not bad considering the size. You don't really buy a large Dobsonian expecting to be able to just carry it around like a small refractor. If you wanted to drive it somewhere, you could probably lay the optical tube across the back seat of your car and put the mount in the passenger seat or trunk. The finder scope is fantastic from what I can tell, and provides crisp views when focused correctly. It can be aligned precisely to be very useful. The focuser gears stopped engaging with the eyepiece holder at one point, possible from being bumped, but was fixed by taking apart and tightening some things. I was a bit disappointed that the scope didn't come with a collimation cap, like most do. While they can be bought separately for fairly cheap, I figured if I'm paying $300 for a telescope they might as well throw one in there. Oh well. The eyepieces that come with it aren't bad, and no eyepieces that come with telescopes are meant to be that extraordinary anyways. They're good to start off with though, and I liked the 25mm. The 10mm is getting replaced shortly, but isn't that bad to start off with. I like how the scope accepts 2 eyepieces as well, so that if I want to spend a good chunk extra in the future to buy a 2 eyepiece I can. It comes with a 2 to 1.25 adapter, so no worries. There is also a handy little eyepiece holder that you can attach to the front of the mount to hold three 1.25 and one 2 eyepieces. The large 8 aperture allows you to see much, much more than a scope of just a couple inches less, and is worth it. Off the top of my head, I've seen DSOs such as the Orion, Crab, Ring, and Dumbbell nebulae, as well as many open and globular clusters and many more. This is with fairly dark/rural skies, but not isolated and still affected a bit by light pollution. I've also seen a couple planets including Jupiter and Mars, and after a good bit of hunting and the help of the Sky Guide app, the faint turquoise dot that is Uranus. The large aperture does make lunar viewing a bit too bright, but this can be solved with either a.) removing the cap on the dust lid to expose the hole to act as a makeshift light reducer (which works pretty well), or b.) buying an actual moon filter to put on an eyepiece. In all, I absolutely love this telescope. Large aperture for a low price, many useful features, and great viewing. I would highly recommend this to anyone.
    Date published: 2017-09-30
    Rated 5 out of 5 by from Excellent product We were looking for a telescope to get us started as star watchers.� This instrument is highly recommended.� Based upon our experience so far we agree.� It is easy to assemble and use; is providing stunning images from the sky and has already made us eager novice astronomers.� A great purchase for us.
    Date published: 2018-01-28
    Rated 5 out of 5 by from Great Can't complain: good quality and good price.
    Date published: 2016-08-19
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