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.

Maksutov-Cassegrain Optical Design
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.

The Mount & Technologies
Computerized AltAzimuth Mount – The NexStar SLT telescope features a single fork arm altazimuth mount, which allows the telescope to track the desired objects as they appear to move across the night sky. The mount sits on a pre-assembled, adjustable steel tripod.

NexStar+ Hand Control – This computerized hand control enables you to automatically slew to any of 40,000 celestial objects with the push of a button. The NexStar+ database includes more than 600 galaxies, 300 clusters and dozens of beautiful binary stars. Not sure what to observe? Choose the Sky Tour feature and the NexStar+ hand control will automatically generate a list of all the best celestial objects currently visible based on your exact time and location.

SkyAlign Technology – Our proprietary SkyAlign alignment procedure makes setting up and using a computerized telescope faster and easier than ever before. Point the telescope at three bright objects in the sky, and the telescope can triangulate its position and locate any other object in the sky automatically. You don’t need to know the names of the stars—you can even pick the Moon or bright planets! For more information about our SkyAlign technology, visit here.

Power – Go anywhere! Feel free to enjoy your NexStar SLT in remote dark sky locations—it’s powered by 8 AA batteries (not included) or a PowerTank portable battery (sold separately). 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. You may also power your telescope with a 12V AC adapter (sold separately).

Accessories Included
Your telescope includes a StarPointer™ red dot finderscope, a star diagonal, and two eyepieces (25mm and 9mm). The two eyepieces offer different magnifications for low- or high-powered observing. The star diagonal provides a right-side-up view and a more comfortable viewing angle when looking up at the sky. The StarPointer™ red dot finderscope will help you quickly center an object in your eyepiece for easier observing.

NexStar 127SLT is ready to grow with you as you become a more experienced amateur astronomer. It’s compatible with all Celestron’s latest accessories, including StarSense AutoAlign, SkyPortal WiFi module, and PowerTank Lithium.

Starry Night Software
Your purchase includes a FREE download of Celestron’s Starry Night. This powerful software will help you learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond. 

WARRANTY : NO WARRANTY ON CELESTRON GOTO ELECTRONICS

TELESCOPE SPECIFICATION

OPTICAL TUBE INFO
Optical Design:	Maksutov-Cassegrain
Aperture:	127mm (5")
Focal Length:	1500mm (59")
Focal Ratio:	f/12
Focal Length of Eyepiece 1:	25mm (0.98")
Magnification of Eyepiece 1:	60x
Focal Length of Eyepiece 2:	9mm (0.35")
Magnification of Eyepiece 2:	167x
Finderscope:	StarPointer™ red dot finderscope
Star Diagonal:	1.25
Optical Tube:	Aluminum
Highest Useful Magnification:	300x
Lowest Useful Magnification:	18x
Limiting Stellar Magnitude:	13
Resolution (Rayleigh):	1.1 arc seconds
Resolution (Dawes):	0.91 arc seconds
Light Gathering Power (Compared to human eye):	329x
Optical Coatings:	Fully Coated
Optical Tube Length:	TBD
Optical Tube Diameter:	TBD
Optical Tube Weight:	TBD
Dovetail:	CG-5 Dovetail bar
MOUNT INFO:
Mount Type:	Computerized Altitude-Azimuth Single Fork Arm
Instrument load capacity:	8 lbs (3.6 kg)
Height adjustment range (includes mount and tripod):	762mm - 1270mm (30" - 50")
Tripod Leg Diameter:	31.75mm (1.25") Stainless steel
Mount Head Weight:	5 lbs (2.3kg)
Accessory Tray:	Yes
Tripod Weight:	5 lbs (2.3kg)
Slew Speeds:	9 slew speeds - max speed 3°/second
Tracking Rates:	Sidereal, Solar and Lunar
Tracking Modes:	Alt-Az, EQ North and EQ South
GPS:	N/A
Dovetail Compatibility:	CG-5 saddle plate
Number of Auxiliary Ports:	1x AUX Port and 1x hand control Port (hand control can use either Port)
Autoguide Port:	No
USB Port:	Yes, Input on hand control
Power Requirements:	12 VDC - 8xAA Batteries (not included)
Motor Drive:	DC Servo Motor
Alignment Procedures:	SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align
Periodic Error Correction:	No
Computerized Hand Control:	1 Hand Control Port and 1 AUX Port
NexStar+ Database:	Over 40,000 including 220 of the best deep sky and solar system objects
Software:	Celestron Starry Night Special Edition Software and SkyPortal App
Total Kit Weight:	TBD
Included Items:	Optical Tube Single Fork Arm Mount and Tripod Accessory Tray NexStar+ Hand Control 20mm and 9mm eyepiece StarPointer™ red dot finderscope Star Diagonal
Solar Warning	Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result. Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it. Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.

Instructions for use in ENGLISH

NexStar SLT MAK Manual

NexStar Plus Hand Control Manual

Celestron PWI Telescope Control Software Manual

Celestron Firmware Manager (CFM) Software

CPWI Software

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