Sky-Watcher 12" Dobsonian Telescope

Sky-Watcher 12" Dobsonian Telescope

Sky-Watcher 12" Dobsonian Telescope

B&H # SKSW12DOB MFR # S11740
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Product Highlights

  • 12" Dobsonian-Style Newtonian
  • 1500mm 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 S11740 overview

  • 1Description

The 12" 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 that can be seen under the right viewing conditions in an 12" SW Dob are the Horsehead Nebula, M76, M97, M61 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 12" (305 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: 050234117401
In the Box
Sky-Watcher 12" Dobsonian Telescope
  • 2 x Plossl Eyepieces; 10 mm and 25 mm
  • Finderscope
  • Eyepiece Tray
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Sky-Watcher S11740 specs

    Optical Tube Assembly
    Optical Design Newtonian Reflector
    Aperture 305 mm / 12"
    Focal Length 1500 mm
    Focal Ratio f/4.9
    Eyepiece Barrel Diameter 1.25"
    Finderscope Yes
    Type Manual; Alt-Azimuth
    Batteries None
    Weight 46.2 lb / 21.0 kg
    Packaging Info
    Package Weight 107.0 lb
    Box Dimensions (LxWxH) 41.0 x 29.5 x 26.0"

    Sky-Watcher S11740 reviews

    12" Dobsonian Telescope is rated 4.8 out of 5 by 9.
    Rated 5 out of 5 by from Wow! It has star power! Very easy to follow instructions for assembly. The balance of the base bearing assembly is amazing. I found the rings of Saturn with the lowest power eyepiece with ease. What a sight, with the enormous light gathering power of the 12 inch mirror. Almost too easy to rotate on the bearing base, well balanced and easy to nudge off the sighting if not careful. Would recommend this telescope to any night sky lover!
    Date published: 2011-06-27
    Rated 5 out of 5 by from Awesome large dobsonian! This is my first 12 inch dob. I used to own a 10 inch dob. I see noticeable differences between my old 10 inch and this 12 inch for deep sky objects and planets. This scope fits in the backseat of my compact car. I recently transported this scope to a dark site, and observed famous late spring/summer objects including globular clusters (M3, M4, M5, M10, M12, M13, M22, M28, M53, M92), open clusters (M6, M7, M11, M23) nebulas (M8, M17, M20, M27, M57) and galaxies (M51, M64, M65, M66, M81, M82, M94, M101, M104) all of which looked fantastic through this large dob. Saturn looked amazing as well - I think I got the best view of Saturn in my life (I have owned more than 10 scopes and looked through many high-end telescopes over the past 10 years). Due to the collapsible structure, the scope retained its collimation really well and basically I do not need to collimate it when I move the scope from my garage to backyard. The crayford focuser is smooth and accurate. I really liked B&H's services. They gave me a really good deal (substantially cheaper than in other telescope retailers + free shipping + no tax to CA residents) and the shipping was relatively quick. The packaging was great. I enjoy this scope a lot and highly recommend this Skywatcher scope to anyone who are looking for a 12 inch dob.
    Date published: 2014-07-03
    Rated 4 out of 5 by from Good Value The optics on my sample seem to be quite good. For the price it's really a bargain. The mounting, as with most econo-dobs leaves something to be desired. I recommend experimenting with tightening or loosening the lock nut bolt assembly on the ground board to get a decent amount of friction for the azimuth motion w/o being overly stiff. I use some heavy eyepieces and the tension adjustment on the altitude bearing doesn't work well enough so I used Velcro to provide for a detachable weight on the back end of the tube.j Using just the provided right angle finder didn't work for me as I couldn't aim the scope well enough, so I got a Telrad reflex 1x finder for straight-through pointing, and after sighting either a known star or planet, or such I then use the right angle finder to refine the pointing and then try to star hop. I observe in a light polluted environment so the whole process is difficult except for a few objects. When I get my next scope I will make sure it has a computerized finding ability built in. The scope itself is pretty heavy (even w/o the mount) so I put it on a dolly and wheel it out to the observing location in my backyard; hand cary the mount. Place the scope tube in the mount. Screw in the two handles and then observe. The mirror needs about an hour to cool down though.
    Date published: 2015-07-07
    Rated 5 out of 5 by from Simplemente Increible Muy buen telescopio, y muy buena calidad de imagen y definicin.
    Date published: 2015-03-24
    Rated 5 out of 5 by from Big Bang for your buck This telescope is the perfect size for ANY nighttime viewings. Compact enough to pack into a Scion xB large enough to view any celestial object without straining yourself whilst bending over close to the ground. Though a little on the heavy side. I recommend that you remove the optical tube before moving it by hand to the setup location and/or get a padded wagon to transport. I think this scope will be for my primary viewing over my 11 SCT! Bottom line the price and quick shipping CANNOT be beat!!!!!
    Date published: 2016-06-18
    Rated 5 out of 5 by from Awesome This is a well made easy to use telescope. As always B&H has the best price and fastest shipping. I have been dealing with B&H over 25 years they never disappoint.
    Date published: 2015-07-20
    Rated 5 out of 5 by from Great telescope I am very pleased with the performance of this telescope. It is large and bulky and not the easiest to transport, but it is definitely worth the effort to get it set up and once it is set up it is easy to get it into the position you want to view space objects. It picks up a lot of faint distant light and is great for viewing deep space (Messier) type objects. The only things I didn't really like about it was that it didn't come with a collimator cap (but a laser collimator can be picked up for pretty cheap) and the locator scope was a side view (but I swapped out my rear view locator from a different telescope with it because I find it easier to get into position with a rear view locator). Overall I am very pleased with the amount of objects I've been able to see and with the detail and clarity that it has (particularly Saturn and Jupiter have very nice detail (through a 6.3mm eyepiece with a 2x Barlow lens that combined get around 475x magnification with this telescope)).
    Date published: 2018-08-03
    Rated 4 out of 5 by from Worth every kg Really happy about this scope. Living in the suburbs of a medium sized city (500k+ people) with it's fair share of light pollution, I wasn't really sure what I could expect to see, but I was more than happy to discover that I could spot very faint objects like Andromeda and even the Ring Nebula from my backyard with the included eyepieces, as well as get a very good view of the larger planets: I can distinguish the bands of clouds on Jupiter, and get a clear view of Saturn's ring (not enough to see the Cassini divison though). And with an aperture like that, it's probably best to only look at the moon using filters... you could almost burn ants with the moonlight that comes out of it! Given the price, the optics are on point. What it lacks though, is, well, all the rest. Although the build is robust, it's extremely simple. The alignment is done by hand, so it can be hard at times to fine tune the position of the scope, especially at higher magnifications. Also, it is a heavyweight. Moving this beast is an adventure in itself! I'm thinking of retro-fitting the base to add dolly-style wheels and handles so I can move it around the yard easily, and adding a basic compass and inclinometer to help me spot fainter objects.
    Date published: 2018-09-18
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