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SkyWatcher Flextube 300 SynScan Dobsonian 12-inch Collapsible Computerized GoTo Large Aperture Telescope (S11820)

  • Based on 54 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Adorama

Arrives Wednesday, Dec 17
Order within 12 hours and 19 minutes
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Style: Collapsible 12" Dobsonian


Features

  • LARGE APERTURE: Get a bright, bold viewing experience at a fraction of the cost of other optical designs.
  • INNOVATIVE COLLAPSIBLE DESIGN: Unique strut design allows for optical tube to collapse for ease of portability while keeping collimation.
  • BUILT-IN WIFI: Control your telescope using a smartphone or tablet with Sky-Watchers proprietary built-in wifi signal.
  • ALL METAL GEARING: Using all-metal gearing on a pair of DC servo motors, the SynScan Dobsonian combines the precise automated tracking of a computerized GoTo telescope with the bright large-aperture viewing of a Dobsonian.
  • 94% REFLECTIVE MIRRORS: Fully multi-coated borosilicate primary and secondary mirrors deliver exceptional views.
  • 42,000 OBJECT DATABASE: SynScan hand controller with 42,000+ object database will keep even the most experienced astronomer busy for countless observing nights.
  • COMES COMPLETE: All accessories such as, 2-inch Crayford-style focuser with 1 1/4-inch adapter, two super wide-angle eyepieces (25mm and 10mm), and 9x50 straight-through finder scope are included with purchase.
  • STURDY AND LIGHTWEIGHT DESIGN: When fully assembled, the Dobsonian weighs only 99.2 pounds fully assembled (46 pound tube, 53 pound base)

Description

Sky-Watcher’s GoTo Dobsonian epitomizes Sky-Watcher’s dedication to innovative ideas, combining our exclusive collapsible optical tube design with the convenience of a computerized GoTo mount. The SynScan hand controller allows users to point the telescope at specific objects, or tour the night sky with the touch of a button! Most astronomers crave the large aperture of a Dobsonian telescope, yet the lack of computerized GoTo features can be discouraging for some users. Sky-Watcher tackles this by adding motors to a traditional Dobsonian base, giving astronomers the benefits of a computerized GoTo system. Sky-Watcher’s signature SynScan hand controller uses two easy alignment methods, ‘Bright Star Alignment’ or ‘Two-Star Alignment’ for quick and easy setup. Once aligned, the SynScan hand controller can point to over 42,000 objects, including a full catalog of Messier, NGC and IC objects, providing you with a lifetime of celestial observing! While Dobsonian telescopes have a reputation for large apertures at a low cost, they often come at the expense of portability. The GoTo Dobsonian fixes this problem using our exclusive collapsible optical tube, featuring a strut system with three 1” steel poles and chrome locking screws. The strut system uses preset indentations which place the optics in the same position time after time, maintaining collimation. Unlike other Dobsonians using truss-tube systems, Sky-Watcher’s GoTo Dobsonian optical tube does not need to be disassembled before transporting from one location to another. With the ability to collapse up to 36%, these optical tubes can be easily transported in the backseat of most vehicles. At the heart of every Sky-Watcher telescope are professional- grade optics. The GoTo Dobsonian is no exception, using borosilicate mirrors coated in quartz, titanium and silicon dioxide. This yields an amazing 94% reflectivity, vivid contrast and minimal vignetting to deliver an exceptional viewing experience. Unlike other manufacturers, Sky-Watcher has a policy of providing you with all necessary accessories to get started. 8”, 10” and 12” GoTo Dobsonians include a 2” Crayford-style focuser, with a 1.25” adapter and two 1.25” eyepieces (10mm and 25mm). Whether this is your first telescope or not, there’s enough accessories for every kind of astronomer.

Brand: Sky-Watcher


Model Name: Sky-Watcher GoTo Collapsible Dobsonian 12" (305 mm)


Optical Tube Length: 70 Millimeters


Eye Piece Lens Description: Plossl


Objective Lens Diameter: 12 Inches


Telescope Mount Description: Altazimuth Mount


Product Dimensions: 42"D x 28"W x 21"H


Focus Type: Auto Focus


Power Source: Adapter


Finderscope: Reflex


Product Dimensions: 42 x 28 x 21 inches


Item Weight: 13.7 pounds


Item model number: S11820


Date First Available: May 21, 2015


Manufacturer: Sky-Watcher


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Dec 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • So far so slowly good
Style: Collapsible 12" Dobsonian
I took 2 hours to set up the base for my 12", because I wanted to do it carefully and was misled by the instructions about the side on which to screw the bracing foot and handle. I was also disappointed that although the parts list had 3 handles for the 12", there were only 2. I could have used that extra handle for fetching and packing. Anyhow all's well that ends well. The barrel and optics were set up in negligible time even though I had never before seen that clever design. The 9x50 finder was quickly aligned with the top of a distant telegraph pole, on which a snail hawk decided to perch and pose unknowingly. Next will be the electronics after I set up a solar powered 12V d.c. supply. ... show more
Reviewed in the United States on January 21, 2025 by Alfred Bhulai

  • Sky Watcher Flextube 8" 200P SynScan GoTo Collapsible Dobsonian Telescope
Style: Collapsible 8" Dobsonian
This is my first ever Telescope and I went up and back between this one and the Celestron StarSense Explorer 8 and I am sure happy that I made the right choice! This Telescope is simply beautiful! It took me 45 minutes to assemble and it was easy, I used the tools they sent. I don’t know why people are giving these bad reviews? Mine did t have a scratch on it, both boxes came with all the parts and the build quality is amazing! I will post an update in a couple of months. The only downside to this package is they send you 2 tiny wood screws for the controller holder and they do not work. I want two little bolts with nuts and washers and will stop at ace tomorrow. It is a quick easy fix! Otherwise I will definitely buy from Skywatcher again! And I paid 100% for this scope with my own money! If you’re thinking about a sky watcher, don’t listen to these bad reviews because mine is awesome. Go ahead and pull the trigger. You won’t be sorry.! Beautiful Telescope! ... show more
Reviewed in the United States on September 16, 2024 by Keona Ann Fonteyn Keona Ann Fonteyn

  • Incomplete order
Style: Collapsible 8" Dobsonian
Second order. Second telescope that comes incomplete. Just 1 box missing the other one.
Reviewed in the United States on April 8, 2025 by Alejandro

  • Great performance for such a simple scope
Style: Collapsible 12" Dobsonian
Awesome scope! We have the 14" version as well but wanted this as it's more portable. Tracks great, GoTo is great, images with ASI camera great.
Reviewed in the United States on April 2, 2025 by Amazon Customer Amazon Customer

  • Great Telescope
Style: Collapsible 10" Dobsonian
This telescope provides awesome views. Both pieces arrived unlike other reviews stating that they did not. It was easy to assemble but it is very large so not an easy option for portability unless you are dedicated to doing so. My only critique is the fact that the base is made from particle or MDF board. For a high level telescope I feel that the base which supports it should be made of better material, but time will tell. ... show more
Reviewed in the United States on December 13, 2024 by Nicholas D

  • What is not to love (first review)
Style: Collapsible 12" Dobsonian
Yes, it is big, yes it is awesome. Now for all you fans, something I did not know. Upon opening the box, the first piece of paper slipped out and indicated , "by the way your Sky-Watcher has built in Wi-Fi." I did not know they had started doing this. I almost bought the Wi-Fi dongle with the scope. I did not have a lot of time with the scope before skies stopped cooperating. I never even used the hand control, just my phone. Fantastic. The pic of the Orion Nebula was just with me trying to line up the phone with the eyepiece, we know that isn't easy, but time was an issue. In any case, the thing kicks butt and has its own Wi-Fi, not networkable, but just connect with phone. I love you Sky-watcher, you're my only scope. Edit. Many folks ask about tracking for astrophotography. Added last pic of Orion with my Pixel with 1:20 minutes exposure. So yes you can do some exposure, but probably not more than 30 sec. Re-edit. Has issues with the drive. Skywatcher support was quick and helpful and sent new base. Very hard to find that type of customer support. Good job! ... show more
Reviewed in the United States on January 15, 2020 by Jason Jason

  • No mirrors
Style: Collapsible 14" Dobsonian
Delivered with no mirrors inside. They are missing in the box
Reviewed in the United States on February 10, 2025 by Joel

  • Great telescope
Style: Collapsible 10" Dobsonian
I've been looking for a larger telescope for years. And now in a position to get one I chose this Sky watcher. Had a 4-in Bushnell for ever, and was not very happy with the quality. At some point I may splurge and go all out and get the 16-in version. But for now this is just fine for backyard viewing. I will caution that no power supply came with us. You will need to supply a plug and Supply or make some type of battery supply plug this into. ... show more
Reviewed in the United States on May 13, 2024 by B. Mayo

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