Details
Designed to be an affordable entry level to mid-level computerized GoTo telescope, the NexStar SLT refractors, reflectors, and Maks are available in the most popular sizes and are loaded with valuable design features. With preassembled, adjustable stainless steel tripods and quick release fork arms and tubes, NexStar SLT telescopes can be set up in a matter of minutes – with no tools required! 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.
Intelligent Design
Powered by 8 AA (user supplied) batteries or an optional AC adapter (#18778), these NexStar GoTos love to travel. 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 (patent pending), 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!
Additional Information
| Optical Design | Maksutov-Cassegrain |
|---|---|
| Aperture (mm) | 127 mm (5 in) |
| Focal Length (mm) | 1500 mm (59 in) |
| Focal Ratio | 12 |
| Eyepiece 1 (mm) | 25 mm (0.98 in) |
| Magnification 1 | 60 x |
| Eyepiece 2 (mm) | 9 mm (0.35 in) |
| Magnification 2 | 167 x |
| Finderscope | StarPointer |
| Star Diagonal | 1.25 |
| Mount | Motorized Altazimuth |
| Accessory Tray | No Tool, Quick release |
| Tripod | Steel |
| Weight (lbs) | 18 lbs (8.16 kg) |
| Highest Useful Magnification | 300 x |
| Lowest Useful Magnification | 18 x |
| Limiting Stellar Magnitude | 13 |
| Resolution (Rayleigh) | 1.1 arc seconds |
| Resolution (Dawes) | 0.91 arc seconds |
| Light Gathering Power (Compared to human eye) | 329 x |
| Angular Field of View (deg) | .83 ° |
| Linear Field of View (@1000 yds) | 44 ft (13 m) |
| Optical Coatings | Fully-Coated |
| Slew Speeds | Nine slew speeds: 3°/sec, 2°/sec, 1°/sec, 64x, 32x, 16x, 8x, 4x, 2x |
| Tracking Rates | Sidereal, Solar and Lunar |
| Tracking Modes | Alt-Az, EQ North and EQ South |
| Alignment Procedures | SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align |
| Computer Hand Control | Fully Computerized / Flash Upgradeable |
| Database | 4,000 Object Database |
| GPS | Optional SkySync GPS Accessory (93969) |
Press Releases
Knowledge Base
- My Celestron software won't run on my Windows 7 computer. Help!
- I need information on the RS-232 (serial) commands for NexStar controlled telescopes.
- What are the instructions for getting my CN-16 or SkySync GPS working with my Celestron GOTO mount?
- The SLT hand control has EQ-NORTH and EQ-SOUTH under mode. But there is no wedge for the SLT - how can I use the mount equatorially?
- How do you stop a GOTO slew in progress? Is there a better way than turning off power or pulling the power plug?
- How do I properly store my NexStar SLT?
- How do I program my Nexstar+ hand control?
- The hand control of my new scope shows the message “Bootloader invalid package 0080†or “Bootloader invalid package 0002â€. How can I fix this and make the mount work?
- My StarPointer is not working. How can I fix this?
- I’m experiencing motion to the east after slews with my Celestron Alt-Az GOTO mount. Is this backlash and how do I correct it?
Downloads
Manuals
NexStar SLT Series MAKs Manual (2.58 MB | PDF)
Reference Materials
Telescope Basics (English, French, German, Italian, Spanish) (481.61 KB | PDF)
Telescope Maintenance (English, French, German, Italian, Spanish) (640.68 KB | PDF)
Celestial Observing (English, French, German, Italian, Spanish) (381.85 KB | PDF)
Astronomy Basics (English, French, German, Italian, Spanish) (2.26 MB | PDF)
Software
Motor Control Firmware Updates v.2.2.5 (3.57 MB | ZIP)
Celestron Firmware Manager (CFM) v.1.0.2100 (ZIP)
Hand Control Firmware Updates v.1.1.14 (3.75 MB | ZIP)

CELESTRON TWO YEAR LIMITED WARRANTY
A. Celestron warrants your telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship. As a condition to the obligation of Celestron to repair or replace such product, the product must be returned to Celestron together with proof-of-purchase satisfactory to Celestron.
B. The Proper Return Authorization Number must be obtained from Celestron in advance of return. Call Celestron at (310) 328-9560 to receive the number to be displayed on the outside of your shipping container.
All returns must be accompanied by a written statement setting forth the name, address, and daytime telephone number of the owner, together with a brief description of any claimed defects. Parts or product for which replacement is made shall become the property of Celestron.
The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of Celestron, and shall be required to prepay such costs.
Celestron shall use reasonable efforts to repair or replace any telescope covered by this warranty within thirty days of receipt. In the event repair or replacement shall require more than thirty days, Celestron shall notify the customer accordingly. Celestron reserves the right to replace any product which has been discontinued from its product line with a new product of comparable value and function.
This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal wear is not covered by this warranty.
CELESTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HEREIN. THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. CELESTRON EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE OR INABILITY TO USE ANY CELESTRON PRODUCT. ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE DISCLAIMED SHALL BE LIMITED IN DURATION TO A TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL PURCHASE.
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied warranty lasts, so the above limitations and exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Celestron reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.
If warranty problems arise, or if you need assistance in using your telescope contact:
Celestron
Customer Service Department
2835 Columbia Street
Torrance, CA 90503
Tel. (310) 328-9560
Fax. (310) 212-5835
Monday-Friday 8AM-4PM PST
NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized Celestron dealer in the U.S.A. or Canada. Warranty outside the U.S.A. and Canada is valid only to customers who purchased from a Celestron's International Distributor or Authorized Celestron Dealer in the specific country. Please contact them for any warranty service.
Where To Buy

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