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Sky-Watcher

Sky Watcher Flextube 16" 400P Synscan GOTO Collapsible Dobsonian

  • Based on 57 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Celestron Direct
Arrives Saturday, Mar 7
Order within 19 hours and 43 minutes
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Style: Collapsible 16" Dobsonian


Features

  • Sky-Watcher 16 Dobsonian 1800mm focal length f/4.4 - 2 Crayford Style Focuser - 1.25 Adaptor - 10mm Plossl Eyepiece - 25mm Plossl Eyepiece - 8x50 RA Erect Image Viewfindrer - SynScan Hand Controller with 42000 Object Database - GoTo Dobsonian Base - Sky-Watcher 2 Year Warranty
  • Combines the convenience and affordability of the traditional Dobsonian with the convenience of a computerized Go-To telescope.

Description

Sky-Watcher’s Flextube SynScan GoTo Collapsible Dobsonian series are the telescopes your mother warned you about. Big aperture, bigger attitude, with all the innovations that make Sky-Watcher the obvious choice when hunting for that Goldilocks zone where value meets desire. Ranging from the standard 8 to a whopping 16 inches in diameter, Flextube SynScan Dobsonians are precision engineered instruments that will allow you to easily find and enjoy viewing night sky treasures such as planets and the Moon, nebulae, star clusters, galaxies and much more. With its patented collapsible tube design, these Dobsonians are truly the ultimate in portability and performance which is crucial when travelling to dark skies to make the most of these impressively large telescopes. The elegant truss tube design was carefully engineered to combine ease of use, extreme portability, and consistent performance in an affordable package. Unlike other truss tube designs, the Flextube Dobsonian does not need to be disassembled between uses. It transports as two compact pieces (optical tube and rocker box) that can be assembled and ready to use in just seconds! It is easy to collimate once set up, and it holds its collimation throughout the evening and even after being collapsed! The patented Tension Control Handle allows users to add or reduce tension, thereby increasing or decreasing the friction between the optical tube and the sideboards. The patented Freedom Find dual encoder design allows the telescope to be moved manually whenever the user wishes - but with no need for re- alignment! The SynScan hand controller allows you to point your telescope to a specific object, or even tour the best objects in the night sky at the touch of a button!! The user-friendly menu system allows automatic slewing to over 42,900 objects. Even an inexperienced astronomer can master its variety of features in a few observing sessions. The Flextube SynScan series seamlessly combines the convenience and affordability of the traditional Dobsonian with the performance and precision of a computerized GoTo telescope all to help you in your quest for big aperture views.

Brand: Sky-Watcher


Model Name: 16" Goto Collapsible Dobsonian Telescope


Optical Tube Length: 70 Inches


Eye Piece Lens Description: Plossl


Objective Lens Diameter: 406 Millimeters


Telescope Mount Description: Altazimuth Mount


Product Dimensions: 76"D x 34"W x 34"H


Focus Type: Manual Focus


Power Source: Adaptor


Finderscope: Reflex


Product Dimensions: 76 x 34 x 34 inches


Item Weight: 69.2 pounds


Item model number: S11840


Date First Available: June 22, 2015


Department: mens


Manufacturer: Sky-Watcher


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 7

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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Similar Products

Top Amazon Reviews

    • What is not to love (first review)
Style: Collapsible 12" Dobsonian
Review Image by Jason Jason
Review Image by Jason Jason
Review Image by Jason Jason
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
    • Just get it... you won't regret it!
Style: Collapsible 8" Dobsonian
I had been thinking of upgrading to this scope for a year before I did it, and I wish I could get that time back and just buy the thing already! NO regrets! Previously I had a 4.5" manual dob; it was a great starter scope. What I love about this one: 1) The tracking! It's great to be able to keep observing without having to manually track an object, especially at higher magnifications. 2) The goto synscan system: setup is amazingly quick and easy (2-4 minutes!). 3) The ability to seamlessly switch between goto and manual moving; yes, you can at any moment just manually move the scope and then go right back to the goto system without resetting! 4) The collapsible tube; the scope can fit in my Prius when collapsed; a cloth light shroud keeps it as dark as if it was non-collapsible (this is NOT included, but is a highly recommended accessory. You can make one yourself or buy one for not too much.) The only thing I did not like was the focuser was in need of adjustment, but that only took me about 5 minutes with an allen wrench and now all's well! ... show more
Reviewed in the United States on April 12, 2018 by G. Spooner
    • So disappointed
Style: Collapsible 10" Dobsonian
Review Image by Warren Ao Warren Ao
Review Image by Warren Ao Warren Ao
The box arrived damaged with a hole and scratches. The secondary mirror adjustment screws and center screw were seized and could not be loosened, making the telescope impossible to collimate. The back of the secondary mirror was dented, raising concerns that the product was not new. I had to disassemble, repackage, and return the telescope, which took a lot of time. Overall, I am extremely disappointed. ... show more
Reviewed in the United States on January 13, 2026 by Warren Ao Warren Ao
    • SAVE ALL PACKING MATERIAL IN CASE YOU NEED TO RETURN IT!!!!!
Style: Collapsible 12" Dobsonian
I am very sorry to leave this rating, as I think it is somewhat unfair, but I can't see doing better just yet. I start by noting that I am a professional astronomer, with years of observing experience with Celestron and Meade scopes, and I even teach laboratory astronomy courses. I'm extremely familiar with the alignment and use of Go-To telescopes. I bought this scope because I wanted a good light-bucket, that could reach further than my 8" catadioptrics. I don't do astrophotography, but a Go-To drive was essential as I've long since gotten star-hopping out of my system. The telescope arrived, and was an easy assembly. Collimation of the secondary and preparation for observing was straightforward. Optical tests showed that it was perfectly consistent with my 2" Ethos eyepieces, with no vignetting, which was really sweet to see. Also, optical tests on bright stars and the moon showed that the image quality of the optics was really great. Then...came the final test...star alignment. Alignment was straightforward on paper, and not to dissimilar to the methods used for Celestron and Meade 8" cats. I opted for two-star alignment, used the hand paddle to move the scope easily from star #1 to star #2. Alignment was declared complete. I tasked the scope to see M27, a fave object, as my "first light" detection. And....nothing. I tasked the scope to go to Vega, and instead I found myself looking at epsilon Lyrae, about 100' off target. So....I realigned, using Altair as star #1 and Capella as star #2....alignment successful, so the paddle declared. I tasked the scope to look at Albireo...again, about 100' off. I tasked it for Capella, which it found, but then it could not refind Altair. I rebooted the scope from a cold start, tried a third time. Same failure. Then, I rebooted the scope, tried "bright star alignment," and got similar bad results. The next clear night, I tried again, after having messaged with customer service at Skywatcher (they got back within 24 hours). I carefully (using a bubble level and compass) made sure my initial configuration of the scope was as required by the manufacturer. I also checked to see if NPE and CE values were set to zero--they were. But still no success in aligning the scope. I wanted to try more tests, but my grace period to return the scope was running out (it's the rainy season in NorCal, and clear nights are rare), so I had to return the scope. I am thankful I fastidiously saved ALL PACKING MATERIAL, bags, etc, so I could avoid a charge from the seller (Adorama). I steeled myself for a battle, as I was afraid Adorama would argue that I somehow damaged the scope, but they did not provide pushback. I intend to repurchase this scope in the summer, when I have more time to check it out. The scope looks really good, and users of the scope on social media tell me that the behavior of the scope I get was abnormal. ... show more
Reviewed in the United States on December 9, 2025 by Barry Allan Rice
    • So nice to have.
Style: Collapsible 10" Dobsonian
I very much appreciate this telescope. The tracking makes sharing the views with my family easier and enjoyable.
Reviewed in the United States on February 2, 2026 by Retired, mostly just tired.
    • Great performance for such a simple scope
Style: Collapsible 12" Dobsonian
Review Image by Amazon Customer Amazon Customer
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
    • Sky Watcher Flextube 8" 200P SynScan GoTo Collapsible Dobsonian Telescope
Style: Collapsible 8" Dobsonian
Review Image by Keona Ann Fonteyn Keona Ann Fonteyn
Review Image by Keona Ann Fonteyn Keona Ann Fonteyn
Review Image by Keona Ann Fonteyn Keona Ann Fonteyn
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
    • dont waste your time
don't both you can't get all the parts to assemble telescope
Reviewed in the United States on October 28, 2025 by Jeff

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