Celestron NexStar 4SE

  (1 Review)
✓ 2 year warranty


Out of stock due 2-4 working days

About this product

Model:  C4se
Part Number:  11049-CGL

The Celestron 4SE is a compact portable design with high quality Maksutov optics and StarBright® XLT coatings. Its portability, GOTO simplicity and 4" aperture has made it a popular telescope. 

A built-in wedge allowing the 4 SE to be used for simple astrophotography. 

Featuring high-quality Maksutov-Cassegrain optics, the NexStar 4SE is an ideal telescope for observing and photographing the wonders of space. With a total weight of 21 lbs including the tripod, the ultra portable 4 SE features a precision optical system with 1,325 mm focal length (f/13) and is the first Maksutov system to ever feature our premium StarBright XLT coatings.

The 4 SE includes a camera control feature that allows you to remotely take a series of timed exposures using your digital SLR camera. Plus the Flip Mirror Control, Straight Through Photographic Port and Tripod featuring a built-in wedge help make short-exposure astrophotography a heavenly experience.

The NexStar 4 SE has all the same features as Celestron’s most advanced computerized GoTo telescopes, including our revolutionary SkyAlign™ alignment technology, a sky tour feature, a database of nearly 40,000 celestial objects and easy to use hand control.

Plug the optional CN-16 GPS Accessory into NexStar’s auxiliary port and download data from orbiting GPS satellites for truly quick and easy alignments. The universe may be full of mysteries, but using the NexStar 4 SE isn’t one of them.

In the tradition of Celestron's famous orange optical tubes, the new NexStar SE Family combines the classic heritage of the original orange tube telescopes with state-of-the-art features including a fully computerized operating system, upgradeable hand control, our superior StarBright XLT coatings, our revolutionary SkyAlign™ telescope alignment software and much more.

Whether you are a seasoned astronomer looking for a portable scope with advanced features, or just starting your astronomy adventure and looking for an easy way to enjoy the night sky, a NexStar SE will help you take a closer look.


  • 4" Maksutov-Cassegrain telescope
  • SE combines the classic heritage of the original orange tube telescopes with the latest state-of-the-art features
  • StarBright XLT high transmission coatings come standard
  • StarPointer finderscope to help with alignment and accurately locating objects
  • Internal flip mirror for convenient viewing straight through (with optional diagonal) or at 90 degrees
  • Quick release fork arm mount, optical tube and accessory tray for no-tool setup
  • Sturdy computerized altazimuth mount
  • Internal battery compartment to prevent cord wrap during use
  • Ultra sturdy steel tripod features built-in wedge which for simple astrophotography 


  • Proven NexStar computer control technology
  • Nearly 40,000 object database with 200 user-definable objects and expanded information on over 200 objects
  • SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process
  • Upgradeable hand control software and motor control units for downloading product updates over the Internet
  • Includes a camera control feature and shutter release cable that allows you to remotely take a series of exposures using your digital SLR camera
  • Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable stars; solar system objects and asterisms
  • DC Servo motors with encoders on both axes
  • Double line, 16-character Liquid Crystal Display Hand Control with backlit LED buttons for easy operation of goto features
  • GPS-compatible with optional SkySync GPS Accessory (93969)

Product Videos

What's in the box

  • Telescope OTA
  • SE Mount, Tripod & Handset
  • StarPointer Finderscope
  • 25mm E-Lux Eyepiece


OPTICAL DESIGN:Maksutov-Cassegrain
APERTURE:102 mm (4.02 in)
FOCAL LENGTH:1325 mm (52.17 in)
MOUNT:Single Fork Arm Altazimuth
EYEPIECE 1:25 mm (0.98 in)
STAR DIAGONAL:Internal Flip mirror for straight thru or 90 viewing angle
OTHER EQUIPMENT:Camera Shutter Cable
TRIPOD:Steel w/ built-in wedge
CD ROM:NexRemote V1.6.14 & The Sky L1
POWER SUPPLY:8-AA batteries (not included)
RESOLUTION:1.36 arc seconds
RESOLVING POWER:1.14 arc seconds
LINEAR FIELD OF VIEW (@1000 YDS):52.5 ft (16 m)
OPTICAL TUBE LENGTH:13.5 in (342.9 mm)
TELESCOPE WEIGHT:11 lb (4.99 kg)
MOTOR DRIVE:Integrated D.C. Electronics
COMPUTER HAND CONTROL:Double line, 16 character Liquid Crystal Display w/ 19 fiber optic backlit LED buttons
SLEW SPEEDS:Nine slew speeds

Downloads / Manuals

The following manuals and downloads are available for this product:


Celestron NexStar 4 SE Manual (PDF)


Motor Control Firmware Updates v.2.2.5 (ZIP)

NexRemote v. 1.7.22 (ZIP)

Hand Control Firmware Updates v.1.1.14 (ZIP)

Celestron Firmware Manager (CFM) (ZIP)

Customer reviews

Average Rating (1 Review):  
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Great Little Goto Scope
07 March 2016  | 

I was looking for a grab and go scope, and as I was already a goto fanatic with a Celestron CPC800 it seemed the logical choice to opt for a small goto scope in the form of a Celestron 4SE. When FLO advertised a customer return at a knocked down price I immediately grabbed my credit card and ordered.

So, nearly a year later was my purchase a sound or rash decision?

First of all the 4SE is no CPC800. How could it be at this price. The tripod and mount resemble a jelly compared to the rock steadiness of a CPC. The goto accuracy reflects the movement in the mount and tripod. A gentle breeze will disturb your celestial view quite effectively or perhaps the vibrations running up the slender tripod legs, from say you, shuffling your feet in the cold.

So, a disaster then? Well, actually that is far from the truth. Sure this little scope has its drawbacks but having lived with it for a little I would not let it go.

As I first stated I was looking for a grab and go scope. The scope sits in my spare bedroom, fully assembled, 32mm eyepiece, dew heater and single 12v connector for my power pack strapped to its small frame. I merely lift it outside and plug it in, simples! Leave it for 30-40 minutes and we are in business.

Alignment: OK, let`s get a couple of things straight I have not the time or the energy to level the scope or go through a 3 star pointless align. I know the area I observe from is roughly level and a one star or solar system align is good enough to get going. Don`t get me wrong I have gone through the levelling and two star alignment process but what`s the fun in that? So, choose a star near where you are observing and align. Sooner, rather than later choose another object to complete the alignment. Just use the Sync and Precise Goto functions to move further around the sky. There is no shame in replacing your first alignment stars with new ones as you traverse the sky! This is a grab and goto scope!

My favourite eyepiece is a 32mm Tele Vue plossl which gives very nice general views of extended objects. Great on star clusters and the moon. The higher magnification you go the more wobbly the image. The optics on my scope are good, in that the view is pleasing to my eyes. When I perform a basic star test I can see that the scope is well collimated but mine definitely has some problems in its optics. This does not bother me as the views are GOOD!

So in conclusion this scope requires love to coax it around the heavens. Some night you will stare in awe at the views and its nimble footwork. Others you will bash it into submission as it fights you at every turn to get that elusive object into your field of view. Such is the lot of a low cost goto scope.

Tips: The internal batteries do work OK`ish. Buy a Celestron/Skywatcher power pack: I have the 17ah model. You will need to buy/make a dew shield, the flexible ones are good. I also have a dew heater and home-made controller on mine. I replaced the plastic red-dot finder(which broke) with an all metal rifle reflex sight. If you like technology connect a Bluetooth to serial port converter(Boultek, 7-15 GBP off ebay) to your handset and control your 4SE from a tablet/phone running Sky Safari. Have fun!


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