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Sold by: Celestron Direct
Sold by: Celestron Direct
(125 ratings)
92% positive over last 12 months
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Sky Watcher Sky-Watcher Classic 250 Dobsonian 10-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – Easy to Use, Perfect for Beginners (S11620)

3.0 3.0 out of 5 stars 232 ratings

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Traditional 10" Dobsonian

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About this item

  • LARGE APERTURE: Get a bright, bold viewing experience at a fraction of the cost of other optical designs.
  • PROPRIETARY TENSION CONTROL HANDLES: These patented handles allow for accurate movement without the need for perfect balance.
  • 94 percent REFLECTIVE MIRRORS: Fully multi-coated borosilicate primary and secondary mirrors deliver exceptional views.
  • TEFLON BEARINGS: Proprietary Teflon bearings ensure smooth azimuth movement.
  • 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 53 pounds fully assembled (28 pound tube, 25 pound base)
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From the manufacturer

skywatcher dobsonian

Sky-Watcher's Classic Dobsonians

Often referred to as a "light bucket", Sky-Watcher Classic Dobsonians offer users the benefits of a large aperture with a low budget. Using just two mirrors, an aluminum tube and a rocker box, Sky-Watcher honors the simple telescope design invented by John Dobson with their Classic Dobsonian. If you're new to astronomy and want to experience bright and vivid planetary viewing, this is the scope for you.

skywatcher classic 150p skywatcher classic 250p skywatcher classic 250p
Classic 150P Classic 200P Classic 250P
Customer Reviews
3.0 out of 5 stars
232
3.0 out of 5 stars
232
3.0 out of 5 stars
232
Aperture (mm) 152 203 257
F/ratio 7.9 5.9 4.7
Focal Length (mm) 1200 1200 1200
Secondary Diameter (mm) 34 48 64
Dawes Limit 0.77 0.57 0.46
Limiting Magnitude 13.4 14 14.5
Maximum Magnification 295x 400x 500x
OTA Weight (lbs) 15 20 28
Base Weight (lbs) 25 25 25
Included Eyepieces 10mm & 25mm 10mm & 25mm 10mm & 25mm

skywatcher dobsonian

skywatcher mirror

skywatcher dobsonian

skywatcher dobsonian

Separates Into Two Sections

Sky-Watcher's Classic Dobsonian is easy to transport and quick to setup. Simply set the optical tube into the base and thread on the tension knob and you're ready to observe.

Optics with 94% Reflectivity

All Dobsonians utilize a borosilicate mirror with a quartz overcoat, producing an incredible 94% reflectivity rating!

Patented Tension Control Handle

Using Sky-Watcher's patented tension control handle provides the Classic Dobsonian with solid control for precise aiming and slewing.

Comes Complete with Accessories

All Classic Dobsonians come complete with a finderscope, two 1.25-inch eyepieces (10mm and 25mm), and a 2-inch to 1.25-inch adapter.

Product guides and documents

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This Item
Sky Watcher Sky-Watcher Classic 250 Dobsonian 10-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – Easy to Use, Perfect for Beginners (S11620)
Sky Watcher Sky-Watcher Classic 250 Dobsonian 10-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – Easy to Use, Perfect for Beginners (S11620)
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Price$699.00$639.99$799.00$349.99-15% $299.00
List:$349.95
-6% $599.95
List:$639.95
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to assemble
3.3
4.7
4.1
3.8
4.2
Easy to use
3.3
5.0
3.7
3.3
For beginners
4.7
3.8
3.6
3.7
Portability
4.2
4.2
3.7
Sold By
Amazon.com
Focus Camera LLC
Adorama
Orion Telescopes & Binoculars
Amazon.com
Amazon.com
focus type
Auto Focus
Manual Focus
Manual Focus
Manual Focus
Manual Focus
Manual Focus
eye piece lens
25/10 Super
Galilean
Barlow
Plossl
Plossl
objective lens diameter
10 inches
150 millimeters
8 inches
135 millimeters
130 millimeters
130 millimeters
aperture diameter
150 millimeters millimeters
135 millimeters millimeters
130 millimeters millimeters
telescope mount
Altazimuth Mount
Altazimuth Mount
Altazimuth Mount
Altazimuth Mount
Equatorial Mount
Altazimuth Mount
lens coating
Fully multi-coated pyrex mirrors
Aluminum & Silicon Dioxide
Aluminum;Silicon Dioxide
weight
40 pounds
0.01 pounds
1 pounds
48 pounds
26.5 pounds
11.4 pounds

Looking for specific info?

What's in the box

  • Optical tube assemble, base assembly, finderscope, 2" Focuser, with a 1.25" Adapter
  • Product Description

    High-Quality Light Buckets with Old School Charm
    Featuring large apertures and easy functionality, Sky-Watcher’s Traditional Dobsonian telescope makes the perfect beginner scope. Developed in the 1970s, the Dobsonian-style telescope is an inexpensive solution for bright, detailed visual observing using a simple design.
    The name ‘Dobsonian’ comes from the telescope’s inventor, John Dobson, a Vedantan monk and sidewalk astronomer who dedicated his life to astronomy outreach. Dobson was notorious for constructing large aperture reflecting telescopes capable of deep sky viewing, using low cost materials. These were often made with found materials, heavy cardboard tubes, recycled porthole glass and plywood mounts. Dobson encouraged other astronomers to assemble their own telescopes and taught workshops on telescope making.
    Sky-Watcher carries on the legacy Dobson left behind with our Traditional Dobsonian telescope. Often referred to as ‘light buckets’, Dobsonians provide users with the highest possible aperture for their money when compared to telescopes of a similar size, such as Schmidt-Cassegrains or refractors. Dobsonians use a simple, yet effective design, optimized for visual observation of faint objects, such as nebulae, star clusters and galaxies. At Sky-Watcher, we stay true to the traditional John Dobson design, using just two mirrors, a metal tube and a simple rocker box. Although we love computerized telescopes, using a star chart to find objects by hand can be far more fulfilling and will improve your knowledge of the night sky. Unplug your electronic devices, step outside and become immersed in the wonders of the universe.
    Not your Father’s Dobsonian
    Don’t let this simple design fool you! Dobsonian-style telescopes utilize their large aperture to give users bright, vivid detail. Both primary and secondary mirrors deliver 94% reflectivity, using borosilicate mirrors coated with quartz, titanium and silicon dioxide. With a finely-crafted parabolic primary mirror and coatings this bright, you’ll be viewing just as John Dobson intended.
    Sky-Watcher Innovation
    Unlike other models on the market, Sky-Watcher Dobsonians feature a patented Tension Control Handle which allow for easy tension adjustment, enabling the telescope to move freely around the sky. The Tension Control Handle also provides stability when using large eyepieces. Steel ball bearings provide smooth movement even when the handle is tightened.
    The simple rocker box mount with azimuth Teflon™ bearings is easy and straightforward enough for any beginner. The use of Teflon™ ensures smooth movement, yet creates enough friction to prevent any unintentional movement of the telescope.
    Accessories and Other Goodies
    While most telescopes limit the astronomer to 1.25” eyepieces, Sky-Watcher provides users with a beefy 2-inch Crayford-style focuser. Using the supplied 1.25 inch adapter you can take advantage of virtually any eyepiece on the market. Also included is a 9x50 finderscope and two eyepeieces (10mm & 25mm), perfect for the beginning astronomer!

    Product information

    Warranty & Support

    Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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    Sky Watcher Sky-Watcher Classic 250 Dobsonian 10-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – Easy to Use, Perfect for Beginners (S11620)


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    Customer reviews

    3 out of 5 stars
    3 out of 5
    232 global ratings

    Customers say

    Customers like the quality of the telescope, saying it's very impressive and great for viewing planets, stars, and deep-sky objects. They appreciate the sturdiness, value, and ease of assembly. However, some customers have reported issues with scratch resistance and the base of the product. Customers also differ on weight and smoothness.

    AI-generated from the text of customer reviews

    36 customers mention36 positive0 negative

    Customers are satisfied with the quality of the telescope. They mention that it is very impressive, great for viewing planets, stars, and deep-sky objects, and easy to assemble. Some say that the finder scope provides a good crisp image, but at zenith is very difficult to use. Overall, most are happy with their purchase and recommend it to others.

    "...I think it's a good telescope. Do you feel lucky?" Read more

    "...The mountains on the moon's rim are impressive against the black background of space, and the bands of Jupiter are fantastic...." Read more

    "...The Orion nebula popped right into view with exquisite detail. The Andromeda Galaxy was spectacular to see as well...." Read more

    "Great telescope. Lost hours of sleep looking into space with this...." Read more

    31 customers mention26 positive5 negative

    Customers find the telescope easy to assemble. They say it's simple to use, has good instructions, and is usable right out of the box. Customers also mention that the telescope comes with tools to help assemble, and everything went together perfectly. Overall, customers say it is a great scope for beginners and advanced users.

    "...It was easy to assemble, and everything went together perfectly. I was intending to adjust my finder scope today, but it is raining...." Read more

    "...Breaking this down is easy, but transportation starts becoming a problem due to its large size and the bulky base...." Read more

    "...Came with tools to help assemble.Edit: took it out to a dark site and man it looks like a huge upgrade...." Read more

    "...Great for viewing planets, stars, and deep-sky objects. Assembly was fairly easy...." Read more

    16 customers mention16 positive0 negative

    Customers appreciate the value of the telescope. They say it is great for the money, and has a great price for the light gathering ability.

    "...Still, I am not sorry I bought this scope. It is a great telescope for the money. June 28, 2017:..." Read more

    "I'm gonna level with you:This thing gets an incredible bang for the buck.First off: This thing is massive. And I mean huge...." Read more

    "...Well worth the money. I've only been using it in urban areas but will be at a dark sight soon to bring out it's full potential...." Read more

    "...This scope has good optics for the price but you should be prepared to spend a bit on quality lenses, a quality barlow and some essential upgrades..." Read more

    9 customers mention9 positive0 negative

    Customers are satisfied with the sturdiness of the telescope. They mention that it's pretty solid and heavy, which makes it more stable and durable. They also say that they have not had any quality issues with the scope at all, and the stability of the mirrors is a big benefit.

    "...I gave this scope 5 stars because it is so well made...." Read more

    "...Aligning the mirrors is a cake walk and the stability of the mirrors is a big benefit...." Read more

    "...The way the factory packaged the OTA and the base was very well done...." Read more

    "...The stand is wood but that is also sturdy. The scope doesn't come fully collimated but its still usable right out of the box...." Read more

    14 customers mention7 positive7 negative

    Customers are mixed about the weight of the telescope. Some mention it's very easy to move around, while others say it'd be difficult to move.

    "...The scope was actually smaller than I anticipated and moving it around is not that difficult...." Read more

    "...starts becoming a problem due to its large size and the bulky base...." Read more

    "...pictures (using the 25 mm eyepiece that came with it) but portable enough to move it without too much effort...." Read more

    "...Mine is heavy on the eyepiece end and so it constantly ether drifts down or you have to tighten the tension adjust VERY tight, or come up with your..." Read more

    9 customers mention6 positive3 negative

    Customers are mixed about the smoothness of the telescope. Some mention that the focuser is very smooth and precise, while others say that it makes precise focusing nearly impossible.

    "...With this thing, I can smoothly guide the telescope into position and make minor adjustments without loosing focus or the object I'm viewing...." Read more

    "...has a sort of lazy susan ball bearing unit in the base and so it is very smooth and precise...." Read more

    "...could further the distance beyond 60 meters, but it was still not focusing properly...." Read more

    "...Focuser: The focuser is solid and smooth but as it is a single speed focusing at high magnification is a challenge...." Read more

    12 customers mention0 positive12 negative

    Customers are dissatisfied with the base of the telescope. They mention that it was missing or wrong.

    "Missing the base. Box Says "box 2 of 2 sold as set", but UPS label says 1 of 1. My base wasn't shipped...." Read more

    "...a Christmas gift and extremely disappointed when unwrapped and there was no base...." Read more

    "It was missing the base. Only "Box 2 of 2" was delivered. DO NOT BUY HERE!..." Read more

    "Like so many others, I received the base but no telescope. The telescope was never sent according to customer service...." Read more

    5 customers mention0 positive5 negative

    Customers are dissatisfied with the scratch resistance of the telescope. They mention that the mirror was detached and heavily scratched, the stand came slightly damaged, and there was a little chip in the back plate of the particle board mount.

    "...My only problem was the stand came slightly damaged but I'm sure that was on ups.Well worth the money...." Read more

    "...There was one little chip in the back plate of the particle board mount...." Read more

    "...2 feature-tension control handles are not necessary for my use and scratch my leg when I walk past the scope...." Read more

    "...images were blurry and unfocused, partially due to the telescope mirror arriving scratched...." Read more

    Spiral Galaxies with DOB 8 Inches
    5 Stars
    Spiral Galaxies with DOB 8 Inches
    First photo is spiral galaxy M83. Second photo is Saturn with subtle division ring. Third is galaxy NGC5238 (at the left of the center).I manage to capture the M83 with my iPhone 6 and spiralCam app. It takes about a minute to see the spiral arm. Overall the telescope is great. The thing to improve on will be the sight scope. It fall off a few times and hit my feet once. It is inserted into the telescope from the bottom up so it has the tendency to drop off after several use and storage. The 2 feature-tension control handles are not necessary for my use and scratch my leg when I walk past the scope. In the end, I remove them and store away. I use the Dobsonian in a very small balcony.I have also add a planter plate with wheels which I get from Ikea for US$5. It is almost perfect for the big scope.The assembly is not as easy. It takes me about 2 hours with lots of strength to tighten the screws into the wood. It should be designed to be assembled easily like Ikea furniture.For design it is not as good looking as the Meade dobsonian. Skywatcher could have make their product look better. Most of the time, 99%, the telescope is not in use and displayed as a "furniture" in the home so it is very important on how it looks. It is definitely the most practical and accurate scope that I have.
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    Top reviews from the United States

    Reviewed in the United States on February 9, 2024
    Style: Traditional 8" DobsonianVerified Purchase
    3 people found this helpful
    Report
    Reviewed in the United States on November 25, 2016
    Style: Traditional 10" DobsonianVerified Purchase
    268 people found this helpful
    Report
    Reviewed in the United States on August 6, 2020
    Style: Traditional 8" DobsonianVerified Purchase
    103 people found this helpful
    Report
    Reviewed in the United States on June 3, 2020
    Style: Traditional 10" DobsonianVerified Purchase
    10 people found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    RM
    1.0 out of 5 stars It's a gamble..
    Reviewed in Canada on November 18, 2021
    Style: Traditional 8" DobsonianVerified Purchase
    20 people found this helpful
    Report
    Jorge García
    1.0 out of 5 stars Muy mala logística.
    Reviewed in Mexico on July 15, 2020
    Style: Traditional 8" DobsonianVerified Purchase
    Amazon Customer
    5.0 out of 5 stars Received Both Pieces!
    Reviewed in Canada on September 6, 2022
    Style: Traditional 8" DobsonianVerified Purchase
    7 people found this helpful
    Report
    Miguel
    5.0 out of 5 stars Excelente para principantes
    Reviewed in Mexico on April 18, 2019
    Style: Traditional 8" DobsonianVerified Purchase
    8 people found this helpful
    Report
    Jessica
    1.0 out of 5 stars Worthy of 0 stars. Do not buy!
    Reviewed in Canada on January 5, 2023
    Style: Traditional 10" DobsonianVerified Purchase
    6 people found this helpful
    Report