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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.
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.
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.
Revolutionary Single Fork Arm Mount
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.
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!
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.

• Telescope for night and solar observation
• High-quality BRESSER Maksutov-Cassegrain optics 
• Ideal for planets, double stars and planetary nebulae
• Optical system: Maksutov-Cassegrain 
• Highest practical power: 300x
• Objective lens diameter: 152 mm 
• Focal length: 1900 mm 
• Aperture ratio: f/12,5
• Eyepiece diameter: 31.7 mm (1.25") and 50.8 mm (2")​
• Excellent focuser with 65 mm diameter
• 6x30 straight through viewfinder with reticle
• Optimized finder socket for comfortable use
• Cradle rings with handle and integrated piggyback camera holder (1/4 thread)
• Smartphone camera adapter for sky navigation included
• Dovetail plate with stainless steel rail 
• 50,8mm (2) to 31,7mm (1,25) adapter with integrated T2 thread (T2-adapter ring for your camera is needed) 

• Stable parallactic mount with fine drive in both axes
• Circular bubble level for easy horizontal alignment
• Stable height-adjustable stainless steel tripod
• Retrofittable with a tracking motor for the right ascension axis
• Pole height scale for setting the latitude
• Scaled graduated circular rings for easier finding of objects by means of star atlas or planetarium software
• Tripod weight: 4.7 kg
• Mount weight: 4 kg (without counterweight)
• Total weight incl. counterweight: 13.2 kg

• Optical Tube Assembly Maksutov-Cassegrain 152/1900
• Aperture solar-filter
• 26mm Super Plössl eyepiece (31.7mm / 1.25")
• Integrated 31.7 mm and T2 adapter
• Adapter for 50.8 mm (2")
• Mounting ring (for EXOS and similar mounts)
• Handle with camera holder
• Smartphone adapter for celestial navigation
• 6x30 Viewfinder
• Astronomy PC software Stellarium
• Rotatable star map
• 1 x 4.5 kg counterweight
• EXOS 1 German equatorial mount with stainless steel tube field tripod

Celestron’s innovative NexStar Star Location Telescope (SLT) has been a customer favorite for years thanks to its unique combination of high-quality optics, a user-friendly computerized interface, and a sturdy single fork arm mount.

This telescope comes with a pre-assembled, adjustable stainless-steel tripod, quick release fork arm, NexStar+ computerized hand control, 127mm Maksutov-Cassegrain optical tube, and lots of bonus accessories.

The entire telescope kit is a simple, no-tool assembly and fast SkyAlign alignment procedure will have you ready to observe in minutes. This makes NexStar 127SLT your perfect companion for impromptu observing sessions and all-night stargazing marathons alike.

Your NexStar 127SLT will reveal details of the lunar surface, Venus and its phases, the polar caps on Mars, Jupiter and its four moons, and Saturn with its rings plainly visible. It can also be used as a land-based spotting telescope for daytime and wildlife observations.

The MAK is a catadioptric telescope, which means the optical design includes both a lens and a mirror. The light coming through a MAK passes through the corrector lens to the primary mirror and back to a spherical secondary mirror before it hits the eyepiece. Images are bright, sharp, and virtually free of chromatic aberration. 

The Maksutov-Cassegrain’s optical design offers several unique benefits. Instead of a secondary mirror, the MAK features a “secondary spot” of reflective coating applied directly to the inside of the corrector plate. Because of this, the telescope does not require frequent collimation like a Schmidt-Cassegrain. Also, the secondary spot is significantly smaller than a traditional Schmidt-Cassegrain secondary mirror, giving the MAK its signature high-contrast views.

One important thing to note about Maksutov-Cassegrain telescopes is that the larger, heavier Maksutov corrector plate takes longer to cool down and adjust to ambient air temperature compared to a Schmidt-Cassegrain of the same aperture.