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Celestron NexStar 127 SLT Computerised Maksutov-Cassegrain Telescope

SKU: CLS-22097

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  • High quality 127mm Maksutov-Cassegrain

  • Fully computerized Altazimuth mount

  • StarPointer finderscope to help with alignment and accurately locating objects

  • Quick-release fork arm mount, optical tube and accessory tray for quick no tool set up

  • Sturdy stainless steel tripod and accessory tray included

  • Great for terrestrial and celestial observing

  • BONUS Astronomy Software download with a 10,000 object database, printable sky maps and 75 enhanced images

In stock

Regular Price: $1,390.00

Special Price $1,299.95

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Designed to be an affordable entry level to mid-level computerized GoTo telescope, this NexStar 127 SLT Mak is loaded with valuable design features.

You can see details of the lunar surface, Venus and its phases, polar caps on Mars, Jupiter and its four moons, Saturn with its rings plainly visible and much more! Most NexStar SLTs can also be used as a land-based spotting telescope. With preassembled, adjustable stainless steep tripods and quick-release fork arms and tubes, the NexStar SLT telescope is your ever-ready partner for intense viewing adventures in a matter of minutes! 

NexStar SLT

Intelligent Design:

Powered by 8 AA (user supplied) batteries or an optional AC adapter, the NexStar SLT telescope series is built to be your lifetime "partner" on travel adventures! The internal battery compartment provides power to the high precision servo motors for rigid low-vibration performance while eliminating cord wrap issues associated with external battery packs.

With the NexStar’s ergonomically designed hand control, the user is free to remove the hand control from its holder for remote use or leave it cradled for hands-free operation. With a touch of a button, you can select the object catalog, change the slew speed, view fascinating information about an object or simply know if a desired object is visible in the sky.

Celestron’s Revolutionary SkyAlign:

Using Celestron’s patented SkyAlign, simply input the date, time and location into the hand control then slew the telescope to any three bright celestial objects in the sky. You do not need to know the names of the stars – you can even pick the Moon or bright planets!

Computerised Mount Features:

  • Proven NexStar computer control technology
  • Database allows telescope to locate over 40,000 celestial objects
  • SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process
  • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
  • Internal battery compartment to prevent cord wrap during use
  • Auxiliary port for additional accessories such as GPS accessory
  • Includes NSOL telescope control software for basic control of your telescope via computer (with optional RS-232 cable)
  • Compatible with optional NexRemote telescope control software, for advanced control of your telescope via computer

Compatible with:


Optical Tube Info: 

Optical Design



127mm (5")

Focal Length

1500mm (59")

Focal Ratio


Focal Length of Eyepiece 1

25mm (.98")

Magnification of Eyepiece 1


Focal Length of Eyepiece 2

9mm (0.35")

Magnification of Eyepiece 2



Red Dot Finderscope (StarPointer)

Star Diagonal


Optical Tube


Highest Useful Magnification


Lowest Useful Magnification


Limiting Stellar Magnitude


Resolution (Rayleigh)

1.1 arc seconds

Resolution (Dawes)

0.91 arc seconds

Optical Coatings

Fully Coated

Optical Tube Length

Not given by Celestron

Optical Tube Diameter

Not given by Celestron

Optical Tube Weight

Not given by Celestron


Vixen / CG-5 Dovetail Bar

Mount Info:

Mount Type

Computerised Altitude-Azimuth Single Fork Arm

Instrument Load Capacity


Height adjustment range (includes mount and tripod)

762mm - 1270mm

Tripod Leg Diameter


Mount Head Weight


Accessory Tray


Tripod Weight


Slew Speeds

9 slew speeds - max speed 3°/second

Tracking Rates

Sidereal, Solar, and Lunar

Tracking Modes

Alt-Az, EQ North & EQ South



Dovetail Compatibility

Vixen / CG-5 dovetail

Auxiliary ports

  • 1 Aux port
  • 1x hand control port (hand control can use either port)

Autoguide port


USB Port

Yes, Input on hand control

Power Requirements

  • 8xAA Batteries (Not included)
  • 12 VDC-750 mA (Tip positive)

Motor Drive

DC servo motors

Alignment Procedures

  • SkyAlign
  • 3-Star Align
  • Solar System Align

Periodic Error Correction


Computerized Hand Control

1 Hand Control Port and 1 Aux Port

NexStar+ Database

Over 120,000 including 220 of the best deep sky and solar system objects


  • Celestron's Starry Night Special Edition Software
  • SkyPortal App

Included Items

  • Maksutov-Cassegrain OTA
  • Single Fork Arm Mount & Tripod
  • Accessory Tray
  • Nexstar+ Hand Control
  • 2x Eyepieces (25mm & 9mm)
  • Star Pointer Finderscope
  • 1.25" Diagonal

About Celestron
Celestron was founded by Tom Johnson whose first telescope design was a simple 6-inch reflector, built for his young son. He gradually progressed to making larger scopes in more sophisticated designs. Today, the Celestron company is an industry leader in designing and manufacturing optical equipment including telescopes (computerised and non-computerised), binoculars, spotting scopes and its accompanying accessories. Celestron's legacy spans 50 years, and has grown to enjoy recognition from amateurs to serious astronomers globally. The company seeks to remain innovative by growing its product offerings, while supporting science education around the world.

Additional Information

Additional Information

Optical Design No
Mount Type Alt-azimuth mount
Aperture 127mm (5")
Focal Ratio f/12
Eyepiece 1 25mm
Eyepiece 2 9mm
Eyepiece 3 No
Finderscope Make Star Pointer
Electronic Hand Control Yes
Motor Drive Yes
Go-To Functionality No
Focal Length 1500mm (59")
Tripod No
Tube Length Not provided by Celestron
Highest Magnification 300x
Warranty Information 2 Years Warranty
Additional Specifications of Product No
Shipping Dimensions No
Shipping Weight No


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