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Discover the universe at the touch of a button with Celestron’s Star Locating Telescopes (SLT). Offering exceptional value and quality, these telescopes feature an integrated GoTo computer system, SkyAlign technology, and an intuitive multilingual database. This means you don't need prior astronomy experience to instantly locate planets, comets, or galaxies. The computer can even analyze the night sky and suggest the best targets to view in real-time.
Setup is entirely tool-free and takes only a few minutes. Thanks to pre-assembled tripods and quick-release couplings, you simply extend the tripod, secure the mount, attach the optical tube via the dovetail rail, and insert your eyepiece.
As the largest Maksutov-Cassegrain model in the NexStar family, the compact SLT 127 is a dedicated planetary specialist capable of 250x magnification. This perfectly hits the sweet spot for average atmospheric limits, making heavier setups unnecessary. With a 127mm aperture, it captures enough light to reveal stunning detail on solar system objects and some deeper space objects too - being a Maksutov design, this telescope is exceptionally good at viewing the moon and planets in very high detail.
The Mount:
The SLT mount is a single-arm alt azimuth mount and is optimized for quick setup and easy portability. Unlike a traditional equatorial mount, you don't need to painstakingly align the telescope to the north, adjust the polar altitude, or carry counterweights. The mount is simply set up horizontally, and after alignment (which involves simply selecting any three bright stars), the computer automatically ensures that the telescope slews to the desired objects and keeps them in focus: The automatic tracking compensates for the Earth's rotation. This makes SLT telescopes ideal for anyone who wants to observe the night sky firsthand: Quick to set up and with all the necessary convenience.
However, this doesn't mean you have to forgo astrophotography: Lunar photography with a DSLR or planetary photography with a video camera like the Celestron NexImage 5 are also possible with the SLT altazimuth mount. A T2 thread is integrated into the 1.25" reducer. However please note that for deepspace astrophotography an equatorial mount is recommended
The hand controller contains a database with thousands of objects to view. These include, of course, the planets of the solar system, as well as countless galaxies, nebulae, star clusters, and interesting stars. Having trouble choosing?
SkyAlign - Setup without prior knowledge of the sky:
The NexStar SLT mount has motors with encoders on both axes and to initialize the computer control, simply enter the time and location (selectable from the database) into the hand controller and slew to any three bright celestial objects – it doesn't matter which ones, you don't even need to know them! Once the alignment is correctly done, the mount then knows what the sky looks like above it and will automatically point to any other object at the touch of a button.
Tip: The SLT telescopes can be retrofitted at any time with the optional StarSense module – then the initialization of the telescope runs fully automatically! This is a small camera that mounts to the telescope, allowing it to automatically orient itself in the sky – without GPS. With StarSense, all you have to do is set up the telescope, turn it on, and wait about three minutes. Since StarSense is compatible with all modern, computer-controlled Celestron telescopes, you can continue using it even if you later upgrade to a larger telescope – StarSense also works with observatory-class telescopes.
Like all Celestron NexStar telescopes, the NexStar SLT can also be controlled via PC. All you need is the USB cable. Using the NexRemote software or the widely used ASCOM interface, you can then control the telescope from a Windows PC.
The battery compartment is integrated into the mount and hidden under a cover. This eliminates the need for an external battery pack to become a tripping hazard.
The Celestron NexStar SLT telescope mount is a robust single-arm altazimuth mount that can be assembled without tools. Large, easy-grip screws make assembly possible even with gloves. The sturdy steel tripod features a storage tray for accessories and a holder for the hand controller and the mount supports telescopes weighing up to approximately 4kg, depending on the design. The clamping mechanism on the mount's arm is compatible with any standard Vixen (V) dovetail joint and holds it securely. A bubble level integrated into one of the tripod legs also simplifies setup and helps you level the mount before use.
The Power Supply
The computer control system naturally requires power. The mount offers several power supply options: either via eight standard AA batteries for complete independence, or via an optional car cigarette lighter adapter cable, or via an optional AC adapter. The integrated battery compartment in the mount eliminates cable clutter and allows for maximum portability.
Specifically designed for Celestron telescopes, a separate outdoor Power Supply which is is cold-resistant is also available. It delivers the necessary voltage even at low temperatures – cheaper power supplies designed for indoor use often provide insufficient power in cold conditions.
Note: Please make sure the correct power supply is used to prevent damage to the sensitive electronics.
Specs:
- Optical Design: Maksutov Casssegrain
- Aperture: 127mm
- Focal Length: 1500mm
- F Ratio: f/12
- Mount: Alt Azimuth
- Control: USB Hand controller
- Power Supply: Batteries (Not included) or a separate power supply
- Dovetail: Vixen
- Tracking modes: Azimuthal, EQ-North, EQ-South
- Tracking Speeds: Sidereal, Lunar & Solar
- Goto: Yes
- Database: 40,000 objects
- Alignment methods: SkyAlign + Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align
- Tripod: Stainless steel
- Weight: 9kg
Whats included:
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127mm Maksutov Casssegrain telescope
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SLT mount + NexStar hand controller
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1.25" zenith prism
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25mm and 9mm eyepieces
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StarPointer red dot finder
- Astronomy software download
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REPUBLIC OF IRELAND

Est. Delivery Time:
5 - 10 Working days after dispatch
Standard Tracked Delivery:
Republic of Ireland Nationwide: from €8.95 upwards
Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.
For some large Telescopes & orders, it may require special handling instructions and in this case you will be asked at the checkout to contact us for a special delivery quotation.
Mainland EUROPE (EU)

Est. Delivery Time:
3 - 5 Working days after dispatch
Standard Tracked Delivery:
Mainland Europe: from €4.95 upwards
Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.
For some large Telescopes or orders, it may require special handling instructions and in this case you will be asked at the checkout to contact us for a special delivery quotation.
EU Additional Info:
If your country is not listed below please contact us for a specialised quote.
Standard EU Delivery Regions:
Germany, France, Belgium, Poland, Luxembourg, Netherlands, Denmark, Portugal, Spain, Austria, Italy, Poland, Croatia, Malta, Greece, Monaco Norway, Sweden & Switzerland.
NON EU Regions

Est. Delivery Time:
7 - 14 Working days after dispatch
Standard Tracked Delivery:
Non-EU: from €8.95 upwards
Note: The exact shipping charge will depend on the size of your order and will be calculated at the checkout. Some large and bulky Telescopes may also be shipped to you directly from our Manufacturer. This is a special agreement we have with our suppliers to ensure our customers enjoy the cheapest possible shipping rates for large bulky Telescopes.
For some large Telescopes or orders, it may require special handling instructions and you will be asked at the checkout to contact us for a special delivery quotation.
Standard NON-EU Delivery Regions:
United Kingdom, Switzerland & Norway
Note: For Non-EU countries, in some cases additional Tax or Customs Duty fees may apply on delivery. Unfortunately this is outside of our control and this varies between different regions. For questions about Customs & Import fees or to find out if they apply in your region, please refer to your local Tax office for more information.
IMPORTANT: It is essential when placing an order, that you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays, return delivery costs or problems with your delivery.
Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.
