Sky-Watcher 8" Dobsonian Telescope

Sky-Watcher 8" Dobsonian Telescope

Sky-Watcher 8" Dobsonian Telescope

B&H # SKSW8DOB MFR # S11700
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Value: $35.00

Product Highlights

  • 8" Dobsonian-Style Newtonian
  • 1200mm Focal Length
  • 2" Crayford-Style Focuser
  • 2 Plossl 1.25" Eyepieces
  • 8x50 Viewfinder
  • Teflon Bearings, Tension Clutch
  • Collapsible Tube Design
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Sky-Watcher S11700 overview

  • 1Description

The 8" Dobsonian Telescope from Sky-Watcher is a large-aperture, short focal-length, Newtonian reflector. It provides big light-bucket gathering, good optical quality and unique utility. It has an inspiring simple construction, emphasizing ease-of-use and greater aperture for lower cost.

Sky-Watcher's optical tube design utilizes their proprietary truss support system. That system allows the optical tube's front and back tubes to collapse together, aligning on the truss support rods, and locking down for secure transport. This one piece, low-hassle OTA design is mechanically simple and results in a large aperture telescope that can be reasonably handled and transported by one individual. This innovation gives Sky-Watcher users tremendous functional ease-of-use.

The Sky-Watcher Dobsonian's large aperture and fast focal ratio make it the ideal dedicated telescope for wide-field, deep-space observation of faint galaxies, nebulae, and star clusters. For ease-of-use, Sky-Watcher uses a high-performance Teflon bearing system in both axes combined with tension adjusters in altitude that assure smooth manual movement.

Sky-Watcher Dobsonian telescopes offer quality optics, huge aperture, solid construction, and superb value for the investment.

In viewing deep-space aperture counts big time. With this telescope you have tremendous light gathering power. Some prominent deep-space objects seen well in an 8" SW DOB are the Lagoon (M8), Trifid (M20), and Swan (M17) nebulae, the globular star clusters M13 and M92 in Hercules, the Great Orion Nebula (M42) and our local galaxy group companion, the Andromeda Galaxy (M31), and many more.

On each parabolic primary mirror, and elliptical diagonal mirror, aluminum is vacuum deposited to the front glass surface and then over coated with hard quartz (SiO4). Additional layers of titanium dioxide (TiO2) and (SiO4) are then applied.

An 8x50mm right angle optical viewfinder provides both magnification and light gathering to help narrow your search for those elusive fuzzies while star-hopping. The standard, backlash-free, 2" Crayford Focuser insures ultra smooth focusing adjustments. Multi-coated, 4-element Plossl eyepieces (25mm and 10mm) provide a spacious 52° Apparent Field of View.

Large aperture 8" (200 mm) Dobsonian-style Newtonian for more light gathering ability at less cost
2" Crayford-style focuser with 1.25" adaptor brings those warm fuzzies into quicker and clearer focus
Two, 4-element, Plossl 1.25" eyepieces; 25 mm and 10 mm
Conveniently located accessory tray holds 3 eyepieces
8x50 RA viewfinder to help find target object
Solid rocker-mount with Teflon bearings and tension clutch facilitates smooth vertical and horizontal movement
Truss-support system allows the optical tube's front and back tubes to collapse together for easy and secure transport
UPC: 050234117005
In the Box
Sky-Watcher 8" Dobsonian Telescope
  • 2 x Plossl Eyepieces; 10 mm and 25 mm
  • Finderscope
  • Eyepiece Tray
  • Celestron Two Year Limited Warranty
  • Table of Contents
    • 1Description

    Sky-Watcher S11700 specs

    Optical Design Newtonian Reflector
    Aperture 8" / 200 mm
    Focal Length 47.24" / 1200 mm
    Focal Ratio 6
    Eyepiece Barrel Diameter 1.25"
    Eyepiece 48 x:  0.98" / 25 mm
    120x: 0.39" / 10 mm
    Maximum Useful Magnification 472x
    Limiting Stellar Magnitude 14
    Finderscope 8x50 RA Viewfinder
    Tripod N/A
    Mount Type Dobsonian
    Power Source None
    Optical Tube Dimensions Length: 44.5" / 113 cm
    Optical Tube Weight 24.2 lb / 11 kg
    Packaging Info
    Package Weight 66.0 lb
    Box Dimensions (LxWxH) 30.0 x 26.0 x 23.0"

    Sky-Watcher S11700 reviews

    8" Dobsonian Telescope is rated 4.3 out of 5 by 10.
    Rated 5 out of 5 by from Buy this one. I was using a Meade 4 SC reflector and decided to move up to an 8 Dobsonian...this was the right move. I was able to assemble the 8 Dob in about an hour, the plossl eyepieces that came with the package work great, and are lightyears better than the MA eyepieces I was using. The scope was perfectly aligned right out of the box, and even if it wasn't the design of the scope makes alignment easy. The Dob mount works great, and the of course there is huge difference between a 4 and 8...light, light, light. My first night out, even with city lights, I was able to see globular clusters and galaxies. It's hard to believe that one can purchase a telescope of this calibre for this much money and have all the included parts and features in the box. Nice work, Sky-Watcher.
    Date published: 2011-10-10
    Rated 5 out of 5 by from Big yet portable I have had this scope out about 5 times in the two weeks that I have had it. I can have it in my car's back seat in 5 minutes. Same time to get it out and set up. Portable. The quality is very good. I can see that it needs to be collimated, but right out of the box, and every time I have set it up since, it has been plenty close to perfect. The only minuses: the bearing surfaces in the base are a bit sticky (if they don't break in soon, I will work on them...) and the right-angle finder scope is hard to use. I will replace the finder with a red dot type soon. It's a sharp scope. Two bands on Jupiter are clear with no filters. Craters of the crescent moon have TEXTURE. The Hercules cluster looks like you could jump in and swim around.
    Date published: 2011-10-10
    Rated 4 out of 5 by from Great value product. I use this on the moon and planets but will start on deep sky objects as soon as the moon clears. A good grab and go scope. The base is a little heavy but then that's good for stability.The collapsability of the tube is very easy to use. The optics are excellent and the mount motion is smooth but it does tend to droop in altitude for a few seconds after release. Easy enough to allow for.The Crayford focuser is smooth and a pleasure to operate. The only niggling problem so far was that the spider vanes are gloss black.When the moon and Jupiter were close together, the moon reflected off the vanes causing a glow right across the field. Remedied with some black gloss on the vanes. Otherwise a good scope at good value.
    Date published: 2016-04-20
    Rated 4 out of 5 by from Excellent Dobsonian Telelscope Fantastic service form B&H. Received the scope in 2 days. Pricing was very competitive with free shipping as well. Over all it is a good scope. It is well made with smooth operation all around. The collapsible feature is very smooth and collimation stays close. I highly recommend a collimator that allows you to align the primary mirror from the mirror end of the scope. I was a little disappointed that Sky Watcher is using phillips flat head screws for adjusting the primary on their 8 scopes instead of allen head screws but this is a personal dislike and has no bearing on the performance of the optics. This scope definitely requires the viewer to sit while viewing. It is too low to the ground for an average height adult to stand and view.
    Date published: 2016-01-27
    Rated 4 out of 5 by from awesome 'scope, awesome price It didn't take long for me to talk myself into purchasing this telescope and there's no buyer's remorse at all. The 200 mm/(almost) 8 inch aperture is the perfect compromise between light gathering capability and reasonable portability. The OTA separates from the Dobsonian base simply by removing the two side handles and lifting the tube off of the Teflon bushings. I'm looking forward to visits to some dark sky sites in Indiana. As good as this telescope is, there's always room for improvement. I am considering a Telrad or red dot finder scope to replace the 8 x 50 right angle finder scope. A two speed Crayford focuser would be a nice upgrade to the single speed version that is included. A word of advice regarding collimation. Prior to collimating this scope, insure that the four knurled thumb screws that support the secondary mirror spider assembly are tightened appropriately to avoid multiple collimation attempts.
    Date published: 2016-02-01
    Rated 4 out of 5 by from Good, but not great. Overall, this is a very good scope. Pros: *VERY bright. *Quality of primary and secondary mirrors is outstanding. *Spotting scope is very bright, too. *Included eyepieces are better than expected. *Center of primary mirror is pre-marked for easy collimation (be sure to purchase an optical collimation tool). *Collapsible design makes transportation easy. *Altitude tensioners / handles also lend to easy transportation. Cons: *Spotting scope mount was installed upside down. *Spotting scope range of adjustment is very limited, and requires shimming of the mount in order to align it. *Dobsonian mount isn't terribly stable. One must overshoot on the high side of altitude adjustment and hope it drifts back down to where you want to point it. I'm hoping things will break in after additional usage. *Diameter of eyepiece mounting tubes is different between the two included eyepieces, preventing sharing of screw-in filters between the two.
    Date published: 2015-08-10
    Rated 5 out of 5 by from Great beginner telescope Excellent first telescope. Great telescope for an adult and kids will love it too. fairly portable. took it camping for a great view of jupiter and the moon. I'm by no means an expert but this was my setup 8 collapsable dobsonian Celestron 8-24x zoom eye piece great place to start then I added a 2.5x Celestron Luminous 2 barlow and a 26mm 2 70deh super wide angle eye piece with this setup you can see great shots of the moon and see the lines on jupiter, snow on mars and the rings of saturn. I haven't done much deep space object searching yet but for my 5 year old and myself and my wife this setup has been full of oooh's and aaaah's the telescope is as advertised. easy setup. did a tiny bit of adjustment with a laser collimation device. the weight of the scope does make it drift a little. so you almost have to overshoot your target and then the scope will settle a few millimeters. I bet with a little adjustment I can add some weight to the end to balance it out. spotter scope works fine. I got a telrad as many had suggested. it will fit on the scope but there is a size mismatch and it overhangs a little...so not ideal the eyepieces it comes with are fine but I love having the zoom lens and I don't have to swap eyepieces. overall very happy with purchase.
    Date published: 2016-04-25
    Rated 4 out of 5 by from When is the next sunset? Daytime no longer matters to me. I am super stoked about my new scope. It confirmed that my old 4.5 reflector is just a toy. The quality of optics is ten times better. The quality of the scope is ten times better. The spotting scope (which is a new upgrade on this model, I believe) is outstanding. In fact, the spotting scope alone is better than my old reflector. And the price was totally reasonable! Wow! I should have saved my money originally, done a little more research, and got this one first of all. There was one little manufacturing problem that I solved. Some of the screw heads on the top base were rubbing on the bottom base when I turned the scope. That is no good in a Dobsonian. I found some identically sized screws at the local hardware store that had smaller, recessed heads, and I swapped them out. It now works perfect. This is the only reason I have to give it 4 stars. Bummer. I love this scope so much, I don't want to be negative, but this is reality. I am happy with the 8 at this point. I live in a very light polluted area - so instead of getting a bigger and bulkier 10 or 12 model, I opted to get an UHC light pollution filter, which I see now is critical. For me, portability is important to travel to some darker locations. If your budget is tight, get this 8 with an LP filter - and use your saved money to get a few new lenses to expand the capabilities of this scope. The provided super-plossl lenses are excellent. They are way better than what came with my previous scope. They have a wider FOV and are sharp and clear. The 10mm will show you the color bands on Jupiter, and the 25mm gives gorgeous views of the bigger DSOs. I also ordered a 6.4mm high power eyepiece and a 2.5x barlow, which should take this scope up to just about it's maximum useful magnification for looking at the planets. I'm also thinking about getting a 2 wide-field 32mm, which will take me to the lowest useful magnification. So - totally worth it, with a little TLC.
    Date published: 2016-11-23
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