Ranking 53 Dobsonian Telescopes Aperture-wise

Dobsonians should be owned by everybody interested in visual astronomy. Dobsonians give the best aperture for the price and are hence ideal for visual observation, where the aperture determines what can be observed. Its mount is straightforward and extremely rigid. 8-inch Dobsonians, which cost around $600, are the optimal choice for the majority of people. However, Dobsonians are not appropriate for astrophotography as a whole.

Caution

Though it is almost 2023, COVID-related disruptions in production lines combined with high consumer demand for telescopes have disrupted the industry, and thus, if you want a scope, you may have to place a backorder and wait several weeks to months.

We'd also advise against purchasing larger-sized telescopes ($300+) from Amazon because you'll get better technical and post-sales support, product range, and deals from online telescope retailers, as well as better assurance that you'll get what you ordered. Most $300+ telescopes are shipped in two boxes (tube in one and base in the other), and Amazon (or some of its third-party vendors) is notorious in the astronomy community for occasionally shipping only one of the boxes. That said, we still love Amazon for everything else and would recommend it for accessories, lower-priced telescopes, and even $300+ telescopes if (and only if) the pricing or availability is appealing! In the United States, High Point Scientific, AgenaAstro, and Orion's Telescope.com are all reputable retailers with excellent shipping, refund, and financing options, and your experience will be comparable to that of your typical Amazon purchases.

4.5"

10"

12"

3" (76mm) Tabletop Dobsonians

All of the 3″ tabletop Dobsonians feature spherical primary mirrors and less-than-ideal accessories. While these make fun gifts, they’re admittedly well short of providing decent performance or image quality.

Best Accessories

Orion Funscope 76 Tabletop Dobsonian

Rank 1

3.7_^/5

It’s not a serious observing tool by any means, but the FunScope comes with quality accessories and handles similarly to a much larger instrument. This is more expensive than the Cometron FirstScope and other FirstScopes due to the addition of better accessories.

$69.99 at Orion Check Amazon Price

Celestron Cometron Firstscope Tabletop Dobsonian

Rank 2

3.6_^/5

While not particularly useful overall, the Cometron Firstscope offers a super-cheap introduction to the world of astronomy and telescopes in a diminutive package. In terms of overall usefulness, the Cometron FirstScope is similar to the other FirstScopes and the Orion Funscope, with largely the same optics and accessories, but unlike the Funscope, it uses an optical red dot finder rather than a battery-powered red dot finder. This may make the scope a little more inconvenient to use, but reduces the cost by a small amount.

$64.95 at HighPoint Check Amazon Price

National Park Foundation FirstScope Tabletop Dobsonian

Rank 3

3.5_^/5

The National Park Foundation FirstScope is the same basic telescope kit as the Cometron and Funscope 76mm tabletop telescopes, but lacks any finder at all - instead simply being aimed by sighting down the tube.

$69.99 at OPTCorp Check Amazon Price

Celestron FirstScope 76mm Tabletop Dobsonian

Rank 4

3.4_^/5

The basic bare-bones FirstScope will work okay, but lacks a finder or acceptable quality eyepieces. The views through this instrument at even low powers are mushy and the eyepieces feel like looking through a drinking straw.

$74.95 at HighPoint Check Amazon Price

Celestron FirstScope Moon Signature Tabletop Dobsonian

Rank 5

3.4_^/5

Replica of the Celestron Firstscope, but with a different optical tube decoration.

$74.95 at HighPoint Check Amazon Price

4" (100mm) Tabletop Dobsonians

Most 4″ tabletop Dobsonians aren’t collimatable, but feature parabolic primary mirrors with rather sharp images. They’re also capable of being mated to photo tripods for on-the-go use.

Best Value

Zhumell Z100 Tabletop Dobsonian

Rank 1

4.25_^/5

The Zhumell Z100, unlike its smaller sub-$100 brethren, offers a truly parabolic primary mirror allowing for sharp images of the Moon, planets, and other targets at anything but the lowest powers. It’s also extremely portable, fitting into even a moderately sized backpack.

$159.99 at HighPoint Check Amazon Price

Orion Skyscanner 100mm Tabletop Dobsonian

Rank 2

4.25_^/5

The SkyScanner has all of the same advantages and disadvantages of the Z100 and exactly the same optics, but includes a 20mm Kellner eyepiece (20x) instead of the Z100’s 17mm Kellner (24x) for low power.

$159.99 at Orion

*Product Discontinued

Orion SkyScanner BL102mm

Rank 3

3.5_^/5

The SkyScanner BL102 has questionable optical quality, a mediocre build, and eyepieces that are straight up junk. It's a strange, unusual, and sudden departure for a company known primarily for its high-quality Dobsonians.

$189.99 at Orion Check Amazon Price

4.5" (114mm) Tabletop Dobsonians

A 4.5″ tabletop Dobsonian is still capable of fitting in a very small space and sets up in seconds.

Best Value

Zhumell Z114 Tabletop Dobsonian

Rank 1

4.3_^/5

The Zhumell Z114 offers many of the same advantages as the Zhumell Z100, but with a collimatable and slightly larger primary mirror, offering sharper images and 30% more light gathering capability. It features the same red dot finder and 17mm/10mm Kellner eyepieces that are included with the Z100.

$239.99 at HighPoint Check Amazon Price

Orion StarBlast 4.5 Astro Tabletop Dobsonian

Rank 2

4_^/5

While often recommended as a beginner telescope and indeed not a bad choice, the Orion StarBlast Astro is essentially identical to the cheaper Zhumell Z114 and offers no significant differences. At its price point, you’d be better served by the equatorially-mounted StarBlast II or one of the 130mm tabletop dobsonian reflectors.

$279.99 at Orion

*Product Discontinued

4.5" Classic Dobsonians

Orion SkyQuest XT4.5 Dobsonian

4.2_^/5

The Orion XT4.5 may have less aperture than some of its cheaper rivals, but it has an ultra-smooth true Dobsonian mount with real bearings, high-quality included Sirius Plossl eyepieces, and its long focal ratio makes it significantly easier to collimate. The scope’s long tube also means that it doesn’t necessarily need a full-height table or stool to be at a comfortable height for use - a milk crate or box will probably do.

$379.99 at Orion

*Product Discontinued

5" (130mm) Tabletop Dobsonians

A 5″ Dobsonian is getting heavy for a table, but is still a very portable and easy-to-use beginner scope.

Best Value

Zhumell Z130 Tabletop Dobsonian

Rank 1

4.3_^/5

The Z130 is the best of the Zhumell tabletop Dobs, featuring even more aperture and a slower focal ratio of f/5, which makes it less demanding of collimation and eyepiece quality. The Z130 comes with tube rings and a nicer focuser when compared to the Heritage 130P. The only downside is that, at over 20 pounds, you’ll be hard pressed to find a suitable surface for the scope to rest on.

Check Amazon Price

Sky-Watcher Heritage 130p Tabletop Dobsonian

Rank 2

4.3_^/5

The Heritage includes the same accessories and sports the same optics as the Z130, but features a collapsible tube that allows it to fit into a smaller space and reduces the weight by a bit when compared to the Z130, which makes it a better choice for kids. This does create the disadvantage of stray light being able to easily enter the tube, which can be (mostly) remedied by creating a foam shroud. For an adult, the weight difference is insignificant.

$275 at HighPoint Check Amazon Price

Orion SkyScanner BL135mm

Rank 3

3.45_^/5

Not only does the SkyScanner BL135 have an uncomfortably low height for a free-standing instrument, but it also suffers from a variety of shortcomings. Its optics are satisfactory, but the Dobsonian mount is poorly made, the focuser is almost unusable, and the eyepieces and finder are cheap garbage. The BL135 is quite literally an Orion-branded generic instrument that can be found on Alibaba, so there isn't anything unique here.

$399.99 at Orion Check Amazon Price

6" Dobs

6" Classic Dobsonians

A full-sized 6″ Dobsonian doesn’t need a table, but is still surprisingly lightweight and portable – while being vastly easier to collimate than its shorter tabletop cousins. If it’s all you can afford, a 6″ Dobsonian is a good choice.

Best Value

Apertura DT6
Dobsonian

Rank 1

4.7_^/5

With an all-metal 1.25” Crayford focuser, a high-quality 25mm (48x) eyepiece, and a full-sized Dobsonian mount, you’re sure to get bright, sharp views of the heavens without having to deal with a tabletop mount or a spindly tripod.

$419.95 at HighPoint

Sky-Watcher 6" Classic Dobsonian

Rank 2

4.4_^/5

The Sky-Watcher 6” Traditional-like all 6” Dobsonians-offers tremendous value and convenience. Unlike the SkyLine 6, the 6” Traditional sports a 2” rack-and-pinion focuser, enabling the use of 2” eyepieces down the line. But you don't really need a 2" eyepiece in a 6" f/8 telescope due to secondary mirror illumination. The eyepiece of the Apertura DT6 is a good 25mm Plossl, whereas the Skywatcher Classic comes with "Super" Modified Achromats, though they do come with both a 25mm and a 10mm instead of only the 25mm.

$460 at HighPoint Check Amazon Price

Orion Skyline 6"
Dobsonian

Rank 3

4.3_^/5

The Orion SkyLine 6 offers some of the best quality in its class, but at a high price, making the Apertura DT6 a better option overall. The Apertura DT6 is essentially a SkyLine 6 copy without the included 9mm eyepiece, meaning you’ll have to go shopping for an extra eyepiece or two if you want high-magnification views of the Moon, planets, double stars, and globular star clusters with the DT6. However, given the price markup of Skyline, shopping for an extra eyepiece with DT6 might make more sense.

$549.99 at Orion

Orion SkyQuest XT6 Dobsonian

Rank 4

4.3_^/5

The XT6 is sometimes the cheapest 6” Dobsonian available, and performs just as well as its competitors, but has the worst value. With a plastic, 1.25”-only focuser and only a single eyepiece (25mm, 48x), by the time you get it up and running, you’ll have spent significantly more money than if you’d just bought one of the other scopes in its price range, to begin with.

$499.99 at Orion Check Amazon Price

Orion SkyQuest XT6 Plus Dobsonian

Rank 5

4.3_^/5

The XT6 Plus includes more accessories than its competitors - a solar filter and 2x Barlow lens to complement its 25mm and 10mm eyepieces, and an attractive white trim - but its 1.25” focuser is all plastic, plus the scope has a steeper price tag than other 6” Dobsonians.

$529.99 at Orion

*Product Discontinued

6" Tabletop Dobsonians

A 6′′ tabletop Dobsonian is great for those who need an ultra-portable scope of decent aperture but really need a custom support or a permanent solid surface, not a table.

Sky-Watcher Heritage 150p Dobsonian

4.6_^/5

The Heritage 150P is essentially a bigger version of the smaller 130mm Heritage, with the same user-friendly tabletop Dobsonian mount and collapsible tube but a bit more light gathering capability. While still a tabletop telescope, it packs great views in a package that can fit in almost any vehicle, storage space, or container.

$310 at HighPoint

Orion Starblast 6 Tabletop Dobsonian

4.15_^/5

With its f/5 focal ratio, the StarBlast 6 provides a wider field of view and lower magnifications with a given eyepiece than the 6” f/8 Dobsonians listed above, but requires a rock-solid tabletop for use and has more stringent collimation requirements. At f/5, coma is noticeable, especially in wide-angle eyepieces, but it's not horrible for the price and portability.

$449.99 at Orion

*Product Discontinued

6" Computerized Tabletop Dobsonians

Orion StarBlast 6i Dobsonian PushTo

4.1_^/5

While less in aperture than similarly-priced offerings, the StarBlast 6i’s tremendously wide field of view and its IntelliScope PushTo system make locating deep-sky objects an absolute breeze, and the included accessories are decent too.

$629.99 at Orion

*Product Discontinued

8" Dobs

For a beginner, the 8′′ Dobsonian offers the best balance of aperture, portability, affordability, and simplicity. An 8′′ Dobsonian is almost exactly the same physical size as a 6′′ apart from the wider tube, but offers significantly more resolution and nearly double the light collecting capability. 8-inch Dobsonians are usually the most recommended size for beginners and hobbyists and are made to last a lifetime.

8" Classic Dobsonians

Best Value

Apertura AD8 Dobsonian

Rank 1

4.9^_/5

GSO-made 'best bang for your buck' offering from HighPointScientific, the most popular US telescope retailer. It's optically and functionally the same as the Zhumell Z8/Orion Skyline 8", but often priced lower or similar. The Z8 and AD8 have the exact same set of eyepieces, focuser, altitude bearing, and finderscope. As of August 2022, AD8 is the best of the three options, and HighPointScientific's assistance makes it superior in every way.

$699.95 at HighPoint

Best Value

Zhumell Z8 Dobsonian

Rank 2

4.9^_/5

Produced by the same company GSO, the Zhumell Z8 is the exact replica of the Apertura AD8 and is optically similar to the Orion Skyline 8". If you can't get hold of Apertura AD8 for some reason, Zhumell Z8 is the clear 8" Dobsonian of choice.

$699.99 at HighPoint Check Amazon Price

Orion Skyline 8" Dobsonian

Rank 3

4.6^_/5

Other than the branding, altitude bearings, and accessories, the Skyline 8" is the same scope as the AD8/Z8 and is made by GSO as well. Orion's extreme price markup because of its brand name makes it the best pick only if the Apertura AD8 or Zhumell Z8 are unavailable. Otherwise, you're paying the extra markup price just to get that Orion badge on your telescope.

$849.99 at Orion

Apertura DT8 Dobsonian

Rank 4

4.6^_/5

The DT8 is a nice scope, but it needs some extra accessories—or at least a high-magnification eyepiece—to unlock its full capabilities. It's one of the best budget options, but do make your calculations if you intend to upgrade any accessories. In such a scenario, AD8/Z8 might be a clear winner.

$549.95 at HighPoint

Sky-Watcher 8" Classic Dobsonian

Rank 5

4.5^_/5

Sky-Watcher's 8” Traditional is usually one of the cheapest 8" Dobsonian available in the US and comes with the bare essentials to get started, but its straight-through finderscope is uncomfortable to use and the included eyepieces are decidedly mediocre.

$655 at HighPoint Check Amazon Price

Orion SkyQuest XT8 Dobsonian

Rank 6

4.3^_/5

The XT8, like the DT8, is a solid choice for beginners but needs a high-magnification eyepiece for optimal planetary/lunar views, and the price is a bit steep considering the lack of accessories.

$649.99 at Orion Check Amazon Price

Orion SkyQuest XT8 Plus Dobsonian

Rank 7

4.3^_/5

The XT8 Plus features a bundle of extra accessories such as a 2x Barlow lens and a solar filter, which are not present in the Z8/AD8/Skyline 8, but lacks the cooling fan, right-angle finderscope, and laser collimator of the GSO 8”(Z8, AD8, Skyline 8).

*Product Discontinued

Explore Scientific FirstLight 8" Dobsonian

Rank 8

4.2^_/5

The FirstLight 8’s included accessories are abysmal, but the unique variation on the Dobsonian mounting and ultra-heavy-duty focuser allows for greater versatility with heavy, expensive aftermarket wide-angle eyepieces, and the rotatable tube rings make for a slightly more comfortable observing experience.

$699.99 at HighPoint Check Amazon Price

8" Truss Tube Dobsonians

Most Compact 8" Dob

Sky-Watcher 8 Flextube Collapsible Dobsonian

4.1^_/5

The 8” Flextube’s collapsible tube is nice for those needing the most compact 8" dobsonian possible, but comes at the cost of a higher weight, more frequent collimation, and stray light issues. It also lacks the dual-speed focuser of some of its competitors(Z8, AD8, Skyline 8, XT8 Plus), which by itself is a $100 accessory.

$755 at HighPoint Check Amazon Price

8" Computerized Dobsonians

Best PushTo

Orion SkyQuest XT8i Dobsonian PushTo

4.1^_/5

The XT8i’s Intelliscope system allows for easy, seamless location of deep-sky objects, though it doesn’t automatically slew the telescope to them nor track for you. If you’re feeling adventurous, the scope can just be used manually like any other Dob.

$899.99 at Orion

*Product Discontinued

Best GoTo

Orion SkyQuest XT8g Dobsonian GoTo

4^_/5

The XT8g features full GoTo and also has the same dual-speed focuser as the higher-end 8” manual Dobsonians on our list. The XT8g is more or less a regular XT8 with the same SynScan system as the Skywatcher 8" Collapsible GoTo, but with the XT8g’s dual-speed focuser.

*Product Discontinued

Sky-Watcher 8" Flextube SynScan Collapsible Dobsonian GoTo

4^_/5

The Skywatcher 8" Collapsible GoTo features full GoTo but can be pushed around manually with or without aligning the GoTo system-and without disrupting the alignment of said GoTo system. It can even be controlled via your phone or tablet with the SynScan Pro app or SkySafari. The GoTo 8” Collapsible is more or less a regular 8” Collapsible with the SynScan system.

$1450 at HighPoint Check Amazon Price

10" Dobs

10′′ Dobsonians gather 56% more light compared to 8′′ Dobsonians and it is totally worth it if you don’t mind the extra weight and bulk. While a little less compact than smaller models, a 10′′ Dobsonian is easily transported in most vehicles and provides even more brilliant views. A truss-tube 10′′ will take more time and consideration to set up compared to a solid tube 10′′ Dobsonian.

Best Value

Apertura AD10 Dobsonian

Rank 1

4.9^_/5

The Apertura AD10 builds on the AD8 by adding just a bit more aperture. The accessories and focal length are the same, and the scope is only a tiny bit more bulky, but the views are over 56% brighter than an 8” scope! If you can afford the additional expense, it is well worth it compared to an 8” Dobsonian.

$949.95 at HighPoint

Best Value

Zhumell Z10 Dobsonian

Rank 2

4.9^_/5

The Z10 is made by GSO, the same manufacturer as the Apertura AD scopes, but sold by a different company. It is absolutely identical to the AD10 in every way. Among the two(AD10 and Z10), AD10 would be the clear winner.

$979.99 at HighPoint Check Amazon Price

Orion Skyline 10" Dobsonian

Rank 3

4.6^_/5

The Skyline 10 is identical to the Z10 and AD10 but at a significant price markup and occasionally with a cheap star chart tossed in.

$1099.99 at Orion

Budget Pick

Apertura DT10 Dobsonian

Rank 4

4.5^_/5

The DT10 is essentially a stripped-down AD10 with only a basic 25mm Plossl eyepiece, a straight-through rather than right-angle finder, a single-speed focuser, and none of the other accessories included. If you’d rather start basic and upgrade later, it’s not a bad choice.

$799.95 at HighPoint

Sky-Watcher 10" Classic Dobsonian

Rank 5

4.4^_/5

Another more “bare-bones” entry, the Sky-Watcher 10” Classic comes with two eyepieces, a 9x50 finderscope, and a single-speed focuser.

$910 at HighPoint Check Amazon Price

Orion SkyQuest XT10 Dobsonian

Rank 6

4.3^_/5

The base XT10 is a great scope, but to get the most out of it you will definitely want more eyepieces and perhaps a better finderscope-all the more reason to consider one of the more well-accessorized scopes listed above and save yourself the trouble.

$999.99 at Orion

*Product Discontinued

Orion SkyQuest XT10 Plus Dobsonian

Rank 7

4.3^_/5

The XT10 Plus is almost as well-accessorized as the GSO 10” Dobsonian and its various rebrands, but lacks a cooling fan and sports a higher price tag. It does, however, include a solar filter and a 2x Barlow lens.

$1099.99 at Orion

*Product Discontinued

Explore Scientific FirstLight 10" Dobsonian

Rank 8

4.15^_/5

The FirstLight 10, like its smaller brethren, is well-designed but lacks even a functional set of accessories-the finder and eyepiece will need to be replaced right away.

$849.99 at HighPoint Check Amazon Price

10" Truss Tube Dobsonians

Sky-Watcher 10" Flextube Collapsible Dobsonian

4^_/5

The 10” Flextube is not as compact as the Explore Scientific truss offering, but is much easier and quicker to assemble. It also comes with a nice 9x50 right-angle finderscope like the GSO Dobsonians.

$1020 at HighPoint Check Amazon Price

Explore Scientific 10" Truss Tube Dobsonian

3.9^_/5

Explore Scientific’s 10” Truss Dob is quite pricey, but is all-metal in construction and is absurdly compact when dismantled. It also has multiple built-in cooling fans. The scope includes no eyepieces, however, and really needs a shroud to reduce stray light.

$1089.99 at HighPoint

10" Computerized Dobsonians

Best PushTo

Orion SkyQuest XT10i Dobsonian PushTo

Rank 1

4^_/5

Like the other XTi scopes, the XT10i’s Intelliscope system aids in aiming the scope at thousands of deep-sky targets. The XT10i’s large cutouts in the base also greatly aid in overall portability and reduce the weight of the scope, making it an improvement over regular 10” Dobs even if you don’t plan on utilizing the Intelliscope system particularly often.

$1249.99 at Orion

*Product Discontinued

Best GoTo

Orion SkyQuest XT10g Dobsonain GoTo

Rank 2

4^_/5

The XT10G is basically identical in operation to the 10” Collapsible GoTo, but of course, lacks the collapsible tube and features a dual-speed focuser, unlike the Collapsible.

*Product Discontinued

Sky-Watcher 10" Collapsible Dobsonian GoTo

Rank 3

4^_/5

Featuring full GoTo and a collapsible tube, the 10” Collapsible is a great option for beginners and experienced users alike. Like most GoTo Dobsonians, the 10” Collapsible can be operated completely manually should you not want to use the GoTo system, and it can be adjusted manually without upsetting the GoTo alignment.

$1715 at HighPoint

12" Dobs

A 12′′ Dobsonian often takes serious consideration before purchasing. The sheer size and bulk of solid-tubed offerings necessitate either a strong user and a large vehicle or an easy setup, such as rolling out of a garage. A 12′′ truss tube is relatively compact, but takes a fair amount of time to assemble and collimate. If you’re willing to put up with the hassle, scopes this size will deliver images that are nothing short of spectacular.

12" Classic Dobsonians

Best Value

Apertura AD12 Dobsonian

Rank 1

4.8^_/5

The AD12’s massive tube requires a strong owner and a large vehicle (or a convenient at-home setup such as a dolly or cart to simply roll it outside) to be set up and transported easily, but if you can fulfill these requirements, you’ll be rewarded with a massive aperture and stunning views at a price that can’t be beat with the help of the best accessories in the class.

$1299.95 at HighPoint

Best Value

Zhumell Z12 Dobsonian

Rank 2

4.8^_/5

The Z12 is basically the same as the AD12, though it is offered at slightly higher or lower prices depending on circumstances and available stock.

$1349.99 at HighPoint Check Amazon Price

Apertura DT12 Dobsonian

Rank 3

4.6^_/5

$999.95 at HighPoint

Orion Skyline 12" Dobsonian

Rank 4

4.5^_/5

The Skyline 12 is essentially identical to the Z12 and AD12 but at a much higher price. For even more money, you can also buy the Skyline 12 as a “kit” with a 2” UHC filter and some charts included.

$1499.99 at Orion

12" Truss Tube Dobsonians

Sky-Watcher 12" Flextube Collapsible Dobsonian

Rank 1

4^_/5

$1715 at HighPoint Check Amazon Price

Explore Scientific 12" Truss Tube Dobsonian

Rank 2

3.8^_/5

$1999.99 at HighPoint

12" Computerized Dobsonians

Orion SkyQuest XT12i Dobsonian PushTo

Rank 1

4.1^_/5

While possessing the same massive size as the AD12 and its rebranded variants, the XT12i features Orion’s Intelliscope system like its smaller brethren, and comes with cutouts in the base which greatly enhance portability.

*Product Discontinued

Orion SkyQuest XX12i Dobsonian

Rank 2

4.1^_/5

The XX12i functions similarly to the Sky-Watcher 12" Flextube Collapsible, but features Orion’s Intelliscope Push-To system like the smaller XTi scopes in Orion’s catalog.

$1999.99 at Orion

Orion SkyQuest XX12g Dobsonian GoTo

Rank 3

4^_/5

The XX12g is identical to the XX12i but with full GoTo as opposed to the Intelliscope system. Larger and more expensive GoTo Dobsonians exist, but we’d recommend sticking with a 12” or smaller scope to start with.

$2599.99 at Orion

Sky-Watcher 12" Flextube Dobsonian GoTo

Rank 4

4^_/5

The 12” Flextube is a little more cumbersome than the XX12g, but considerably simpler to set up for each use—it’s best if you have a minivan or truck to transport it, however—or if you can store and roll it out of a garage.

$2560 at HighPoint