Used Celestron NexStar 4 SE Maksutov-Cassegrain Computerized Telescope

SKU: US1951095 MFR: 11049
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What`s in the box:

  • Optical Tube
  • 25mm Eyepiece
  • Star Pointer Finderscope
  • Accessory Tray
  • Single Fork Arm Mount and Tripod
  • Starry Night 8 SE Download Code
  • CPWI Control Software
  • (Battery Not Included)
  • Original Box

INCLUDES FREE WARRANTY

  • This used item comes with a free 90-day warranty. ?
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Reviews about this item

Review Summary

2025-03-19T12:58:12

Rated 5 out of 5

Great used purchase and like new

I purchased this complete combination in March of 2025. The scope was delivered safely contained in its two original boxes and everything was like new condition. Great job guys!

Raymond W.

2023-11-03T04:29:02

Rated 5 out of 5

Great OTA, decent goto. Don't bother with batteries.

Great scope! I used to have a 10 inch dob, so I was looking for something with a large aperture, but would be more portable. It also has been sometime since I had done any star gazing so the goto features are really nice. A word of caution, do not even bother using AA batteries. You won't get more then an hour out of a set, they just can't maintain the proper voltage and the scope will do all kinds of crazy things and point in the wrong directions. Once I got a power tank, alignment was super easy and the goto has been working well. I wouldn't recommend it for a complete beginner because so far I have need to do small manual adjustments, but I came into with those expectations.

JOSHUA B.

2022-12-21T02:28:21

Rated 5 out of 5

Nexstar 4se

Great little telescope. Aligning red dot finder was much easier than with larger tubes, and good luck of having a full moon the first night we used it). 3 object auto align worked great.

WILLIAM K.

2022-12-17T07:54:59

Rated 5 out of 5

Excellent "go-to" telescope.

Wonderful picture. Works great!

PARKER M.

2022-09-29T09:22:03

Rated 5 out of 5

Celestron Telescope

The Celestron telescope and accessories are awesome.

RICHARD B.

2022-07-24T09:30:49

Rated 4 out of 5

Fantastic Telescope for Beginners

One of the best things I have purchased in a long time. I've had it for a year now and absolutely LOVE going to dark sky places and able to set up this scope while camping. At a dark sky site, the Andromeda Galaxy & Orion Nebula look stunning. You can see the planets in the scope from anywhere and both jupiter & saturn look absolutely great as well. Globular Clusters look great in the scope as well. However the only complain as I have is having to buy so many extra accessories-like the GPS unit-wish it would have been included in the scope for the price of it. (you don't have to buy it but it helps the set up process a lot quicker).

Leo P.

2022-06-13T16:21:14

Rated 5 out of 5

NexStar 6SE

Wow just Wow, I tried to save some Dollars over the 8 inch model and though I would regret getting the 6 Inch model over the 8 inch Model! NOPE Not One BIT, Mind you Im 66 yrs old and was looking for a lighter weight package with good performance! and to save some money also so i bought this and added some extra goodies with the money I saved! No Regrets Here. This thing is a real sweet spot! Easy to transport and take apart and setup and has real good optics! I just Love It and Think it will Last Last me years to come!

MAX T.

2022-06-13T16:05:32

Rated 5 out of 5

6 inch Power House

I couldn't be happier with my purchase as for bang for the buck, I have been nothing but impressed by its performance and the ability to computer control this unit remotely with the wifi-module is nothing but impressive, although I feel somewhat Lazy and think I should learn more about the sky's also, I do have an older model EQ mount and intend to use it some also in the future and maybe add a good manual scope to my collection, so far this 6 incher has taught me a lot and can see all kinds of stuff including deep sky objects as well , very nicely!

MAX T.

2022-05-24T08:33:39

Rated 5 out of 5

Great product

You must be in the right location to get the full use of it.

Anand S.

2022-04-22T13:35:36

Rated 5 out of 5

Amazing!

Love it! Amazing gift.

Charles Z.

2022-02-20T18:43:06

Rated 4 out of 5

Good one for amateurs

Would have like a further zooming in option once the star is spotted. Also wish the system had some kind of internal memory to record save settings, you can't keep the battery on as it drains very fast and once you turn off u need to enter the settings every single time. The setting up is very easy and straightforward.

ABHIJIT K.

2022-02-01T08:45:46

Rated 5 out of 5

Great Product, Great Service from Adorama

Beautiful scope. We are thankful to finally have it. We?ve wanted a 6se for quite a while and we?re glad it?s here. The shipping happened fast and the package was in perfect shape when it got here. We took a picture of Orion nebula last night and we?re thrilled! Adorama was awesome to work with. Thanks Adorama!

ACCOUNTS P.

2022-01-30T09:09:36

Rated 5 out of 5

Great Telescope!

Excellent scope. Good for novice or experienced star gazer. Takes a little adjusting once assembled. Highly recommend! Adorama salesperson was very helpful.

PHILLIP W.

2022-01-19T00:32:28

Rated 5 out of 5

Well spent

I knew, buying the Celestron 6SE, I would get good value for the money spent. The telescope was as good as expected. Having lots of interesting astrophoto sessions.

Peter S.

2022-01-16T03:25:21

Rated 5 out of 5

Excellent telescope - worth the price

This is an excellent telescope and very easy to set up. We are new to night sky viewing so this computerized telescope makes it easy to learn about and view our night sky. I did have to call tech support as I had a question and they were fantastic! Answered my question and gave me additional information to make our experience even better! I would highly recommend this product.

Carol Z.

2022-01-11T20:44:46

Rated 5 out of 5

Amazing telescope and gonna enjoy it for years to come.

This telescope is absolutely amazing I have gotten to view the moon and a few stars and the quality is amazing. Everything came in excellent condition and just very satisfied with it and definitely gonna enjoy this telescope for many years to come and definitely gonna enjoy doing some astrophotography with this telescope. Definitely worth the money for it.

Kenny M.

2022-01-05T07:38:52

Rated 5 out of 5

Awesome scope, easy to use and navigate.

Love this telescope. Purchased it for our granddaughter for Xmas and the whole family has been enjoying gazing at the stars, planets, and moon.

DIANE T.

2022-01-02T07:54:00

Rated 5 out of 5

Excellent telescope !

Absolutely wonderful telescope, can't get enough time to use it !!

Bruce C.

2021-11-30T07:22:21

Rated 5 out of 5

Great computerized telescope

Everything looks and works as it should. We?re still figuring some things out, but no disappointments yet.

Eric P.

2021-11-16T07:40:01

Rated 5 out of 5

SUPERBLY SOLID GOTO MOUNT AND SCOPE. PERFECT FOR GRAB AND GO!!

Excellent optics! A great sized grab and go scope! This will go where my larger scopes won't or I won't want to pack up 150 pounds of gear. So this will be a 'frequent flyer.' I've not done more with the mount yet other than power it up and get the feel for it in the house. It is a very stable mount for its size. Initial images sans alignment just for a look through the optics showed zero image shift, both the moon and Jupiter displayed chromatic free images and Jupiter's belts really popped. I would expect, owning about five Celestron GoTo mounts of various sizes, that this will be as exceptional as they are!

BOB C.

2021-09-06T11:19:49

Rated 5 out of 5

Two giant planets with a NexStar 4SE

Once I got the finder scope lined up it worked just fine. Last night, with only a one star alignment (Arcturus, alt/az mode) I observed Saturn and its rings, and some bands across the sphere. I little later I observed Jupiter, several bands, and the moons Io, Ganymede, and Europa. It was an extreme pleasure since with my much bigger CGE 2000 almost everything South is blocked by my house. It was a pleasure to once again view the planets. When seeing gets better in the fall I look forward to viewing some star clusters and nebulae.

PHILIP M.

2021-08-31T12:35:50

Rated 5 out of 5

Great New Telescope Of My Dreams

I have always dreamed of having a more powerful and user friendly telescope like the Nexstar 8SE, and its only limitation is its user, me! I am learning more and more about it as I use it, and it is everything I hoped it would be!

GERALD W.

2021-08-26T11:25:08

Rated 5 out of 5

Powerful and portable!

Very nice telescope. Good clear images of planets and more deep space objects than I expected. Transportable yet powerful! A great mix of the 2. Very happy!

KEITH P.

2021-08-19T08:43:16

Rated 4 out of 5

Good scope but mechanically limited

Not a bad scope however the lack of switching to Manuel control does limit it to an experienced amateur

PHILIP I.

2021-08-18T09:36:47

Rated 5 out of 5

stay away from pretenders--get this--oh use a Telrad

great scope

stephen d.

2021-08-18T09:05:07

Rated 5 out of 5

Top of beginners level telescope

If you want the top of the beginners telescope, this is it. It is absolutely fantastic for planetary and moon observation. In clean skies, visibility for galaxies is great. I recommend buying accessories to locate celestial bodies, though.

DIEGO H.

2021-08-08T09:51:45

Rated 5 out of 5

Great for viewing but limited for camera use.

As a novice to telescopes, this is my first serious telescope. I gave my beginner scope to the granddaughters, but this one is really easy to use. Simply follow the set up instructions, and it will take you to the object (star or planet) of your choice and track them. The images are sharp and striking. I hoped to use it with my Nikon d7200, and it will attach, but the eyepieces are bypassed with the camera, resulting in a 2036mm super telephoto. It still provides good pictures as a telephoto lens. Saturn picture taken on first night of use.

LITT D.

2021-08-06T17:50:20

Rated 5 out of 5

Wonderful telescope

Wonderful telescope So glad we ordered it. Easy enough to use and learn on and still have an amazing view.

KATHY R.

2021-07-28T08:48:33

Rated 5 out of 5

Excellent scope

Excellent scope. Easy to setup. Excellent shipping. Did not care for the finder scope though

GEORGE M.

2021-07-25T10:44:58

Rated 5 out of 5

Pleasing Telescope

I received this as a gift, the telescope is fantastic though it will take some getting used to. The app associated with it is a mess to use, though the remote is easy. It was a bit heavy for me though, this is to be expected as telescopes get larger. I love how quiet it is, it was easy to assemble and break down and the view really was fantastic.

WILLIAM Y.

Celestron NexStar SE Specifications

  • Optical Design

    Maksutov-Cassegrain

  • Aperture

    4.02" (102mm)

  • Focal Length

    52" (1325mm)

  • Focal Ratio

    f/13

  • Focal Length of Eyepiece 1

    0.98" (25mm)

  • Magnification of Eyepiece 1

    53x

  • Finderscope

    StarPointer red dot finderscope

  • Star Diagonal

    Internal Flip mirror for straight thru or 90 Degree viewing angle

  • Optical Tube

    Aluminum

  • Highest Useful Magnification

    241x

  • Lowest Useful Magnification

    15x

  • Limiting Stellar Magnitude

    12.5

  • Resolution (Rayleigh)

    1.37 arc seconds

  • Resolution (Dawes)

    1.14 arc seconds

  • Light Gathering Power

    212x (Compared to human eye)

  • Secondary Mirror Obstruction

    0.38" (35mm)

  • Secondary Mirror Obstruction by Diameter

    34%

  • Secondary Mirror Obstruction by Area

    12%

  • Optical Coatings

    StarBright XLT

  • Dovetail

    CG-5 Dovetail bar

  • Mount Type

    Computerized Altitude-Azimuth Single Fork Arm

  • Instrument load capacity

    10 lbs (4.54kg)

  • Height adjustment range

    37 - 55" (939.8 - 2397mm) (includes mount and tripod)

  • Tripod leg diameter

    1.5" (38.1mm) Stainless Steel

  • Mount Head Weight

    7 lbs (3.2kg)

  • Accessory Tray

    Yes

  • Tripod Weight

    10 lbs (4.54kg)

  • Slew Speeds

    9 slew speeds - max speed 3 Degree /second

  • Tracking Rates

    Sidereal, Solar and Lunar

  • Tracking Modes

    Alt-Az, EQ North and EQ South

  • Dovetail Compatibility

    CG-5 dovetail

  • Number of Auxiliary Ports

    1x AUX Port

  • Autoguide Port

    No

  • USB Port

    Yes, Hand Control input

  • Power Requirements

    8-AA batteries (not included) and 12 VDC-750 mA (Tip positive)

  • Motor Drive

    DC servo motors

  • Alignment Procedures

    SkyAlign, 1-Star Align, 2-Star Align, Auto 2-Star Align, Solar System Align, EQ North / EQ South Alignment (EQ align requires an equatorial wedge)

  • Periodic Error Correction

    No

  • Computerized Hand Control

    Double line, 18 character Liquid Crystal Display with 19 fiber optic backlit LED buttons

  • NexStar+ Database

    38,181 accessible objects. Enhanced information on over 200 objects.

  • Software

    Celestron Starry Night Special Edition Software and SkyPortal App

  • Battery Info

    Optional, not included

  • Battery Material

    -

  • Battery Type

    AA

  • Battery Quantity

    8

  • Dimensions (Dia. x L)

    4.9 x 13.5" (125 x 343mm)

  • Weight

    Total: 23 lbs (10.4 kg)
    Optical Tube: 6 lbs (2.7kg)

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64 Accessories for Celestron NexStar 4 SE Maksutov-Cassegrain Computerized Telescope

  • All Accessories (64)
  • Batteries & Power Supply (4)Required Item
  • Eyepieces & Accessories (43)
  • Filters (8)
  • Cases, Bags & Sleeves (2)
  • Imaging Adapters (1)
  • Flashlights & Area Lights (1)
  • Telescope Accessories (3)
  • Navigational Accessories (2)

About Celestron NexStar 4 SE Maksutov-Cassegrain Computerized Telescope

FEATURED REVIEWS

Excellent - met all my all expectations!

By ahonkan

I am an amateur astronomy enthusiast who always wanted a go-to computerized scope. Celestron Nexstar 6SE met all my needs and expectations - the scope quality is fabulous, the tripod is sturdy, the setup instructions are accurate and I managed to see more in my first night of using the scope than I ever had - with useful info on the hand-held remote! Looking forward to using it with my laptop.

Excellent all purpose telescope

By Pete

[...] Comes with 6 element 25 mm 1.25" Plossl' eyepiece, 1.25" diagonal, 1.25' visual back, easy to use finderscope, aperture cover, tripod, and accessory/eyepiece tray. Manual and quick start guide are well written. Set-up in minutes. Can use 8 AA batteries or connect an external source via 12 Volt connector (12 Volt car accessory or AC adapters are available as accessories). Since the single fork-arm must power motor(s) and the controller, the AA batteries will not last long if you do a lot...

View full Review

celstron

Celestron NexStar 4 SE.

Celestron’s signature orange-tube telescope combines advanced features and excellent optics in one easy-to-use system, the NexStar 4SE. It’s the perfect choice for your first serious telescope, offering striking views at an economical price.

  • 4-inch aperture provides excellent light-gathering ability at an affordable price. You’ll get impressive views of the Moon and planets, along with deep sky objects like the Orion Nebula, while retaining a compact form factor.
  • Fully automated GoTo mount with database of 40,000+ celestial objects automatically locates and tracks objects for you.
  • SkyAlign technology gets your telescope aligned and ready to observe in minutes. Even if you’re unfamiliar with the night sky, you can easily align your telescope on any three bright objects.
  • Unique single fork arm design and sturdy steel tripod all break down into separate components for easy transport and quick assembly.

Our Founder’s Vision, Reimagined For The 21st Century.

In the 1970s, Celestron’s Schmidt-Cassegrain telescopes brought the hobby of astronomy to the masses and established Celestron as the world’s premier telescope maker. Our founder, Tom Johnson, invented Celestron’s proprietary method of producing Schmidt corrector plates for superior views and maximum portability. Johnson believed in creating high-quality optical instruments at an affordable price, and inspired a generation of amateur astronomers.

Four decades later, we’ve improved upon this design by adding cutting-edge features, while staying true to our founder’s intent.

Our Founder’s Vision, Reimagined for the 21st Century

View The Universe’s Most Impressive Celestial Objects.

The 4SE’s four-inch primary mirror packs enough light-gathering ability to observe the best that the solar system has to offer: Saturn’s rings, the cloud bands on Jupiter, and geographic features on the surface of the Moon. When it comes to deep sky objects, take your 4SE to a dark-sky site and you’ll see hundreds of pinpoint stars in the Hercules Globular Cluster, the spiral arms of the Whirlpool Galaxy, and more.

View the Universe’s Most Impressive Celestial Objects.

Advanced Features Let the NexStar SE Grow With You.

The NexStar SE is compatible with all the high-tech accessories advanced users love. Provide GPS coordinates to your telescope with SkySync, or add automatic alignment functionality with StarSense AutoAlign.

Its built-in wedge allows you to track long exposures. if you’re interested in imaging the Moon and planets, pair your NexStar 4SE with one of our Skyris cameras. From your first observing session and for years to come, the NexStar SE is your trusted companion.

Advanced Features Let the NexStar SE Grow With You.

Revolutionary Single Fork Arm Mount.

fork arm

We know the best telescope is the one you will use most often. That’s why Celestron’s engineers created NexStar SE’s unique, patented single fork arm mount. It’s perfectly portable and makes setup quick and easy. What’s more, the NexStar SE breaks down into several lightweight and compact pieces, making it easy to transport, even in small vehicles. You’ll have no problem getting the NexStar SE to your favorite observing site, or setting it up quickly in your backyard.

fork arm

Of course, it’s what’s inside the mount that really counts. Sturdy construction from high-quality components give NexStar SE the pointing and tracking accuracy needed to observe and follow your favorite targets with push-button ease. Use the included NexStar+ hand control to locate over 40,000 celestial objects, or take a Sky Tour and let your telescope show you the best objects currently visible.

Aligning your telescope is simple and painless, too, thanks to SkyAlign. This process makes alignment as easy as 1-2-3: just center three bright objects in your eyepiece and press ALIGN. For even easier alignment, attach our StarSense AutoAlign and your NexStar SE aligns itself!

Warranty Information

This used item has a FREE 90-day warranty. See details.

What's in the box:

  • Optical Tube
  • 25mm Eyepiece
  • Star Pointer Finderscope
  • Accessory Tray
  • Single Fork Arm Mount and Tripod
  • Starry Night 8 SE Download Code
  • CPWI Control Software
  • (Battery Not Included)
  • Original Box