Celestron NexStar 130 SLT

Computerized Telescope

If you look to buy a telescope then you might want to have a look to this Celestron NexStar 130. Designed to be an affordable entry level to mid-level computerized GoTo telescope, the Celestron NexStar 130 SLT (Star Locating Telescope) refractors and reflectors are available in the most popular sizes and are loaded with valuable design features, this telescope for sale in the best stores is one among few of his category that have this features and the price is really affordable. With pre-assembled, 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, Mars resolved as an orange disc, Jupiter and its four moons, Saturn with its rings plainly visible and a variety of many more objects. With the versatility and capability of this telescope it’s possible to begin hunting comets as well.

Features – Quick View

  • Computerized hand control with 4,000-object database
  • SkyAlign allows you to align on any 3 bright celestial objects
  • Motorized Altazimuth mount
  • Focal ratio: f5
  • Focal length: 650mm

Celestron NexStar 130 SLT is powered by 8 AA user supplied batteries or an optional AC adapter. 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.
At the heart of the Celestron Next Star 130 SLT is a quality 130mm Newtonian Reflector telescope with an aperture of 5?. With a focal ratio of f/5 and focal length of 650mm, this telescope also features multi-coated, high quality Celestron optics and makes use of a rack and pinion style focuser. The whole system, including the drive and computer units weighs only 18 lbs (8.16 kg).

As mentioned before the 130mm reflectors come with a fully computerized hand control with a database of over 4,000 celestial objects. With its pre-assembled, adjustable steeltripod, the Celestron NexStar 130 SLT can be up and ready to use in a matter of minutes. The new SkyAlign alignment technology and the included StarPointer Finderscope with a red LED makes aligning very easy. It can visualize the details of the lunar surface, the rings of Saturn, the polar ice caps on Mars, the cloud belts on Jupiter, or a number of the Messier objects such as the globular cluster in Hercules (M13), or the Great Nebula in Orion (M42). This telescope enable the user to begin to explore some of the fainter Messier objects using the additional light-gathering capabilities of the 130 SLT’s 5″ primary mirror.

Celestron NexStar 130 With Celestron’s SkyAlign technology, perform auto alignment by simply input the date, time and your location (the CPC models have built-in GPS that does this for you) and then align the telescope to three bright stars of your choosing. You do not need to know the names of the stars, you could even pick the moon or bright planets. The NexStarComputer system will automatically figure out which stars were chosen and then align the telescope. There is no need to point the telescope North or to level the optical tube, the initial position of the telescope is irrelevant. This makes for a fast and very easy method for aligning the telescope.

    • Clear images with high quality 130mm mirror optics
    • Automated and user friendly viewing with a fully computerized Altazimuth mount
    • Quick no tool set up
    • Rugged tripod for stable viewing platform (Pre-assembled with 1.25″ steel tube legs)
    • Convenient accessory tray
    • Easy alignment with StarPointer
    • Compatible with 2″ eyepieces
    • Includes “The Sky®” software (educational info about the night sky)Celestron 130 SLT Computerized Telescope

The Celestron NexStar 130 SLT Computerized Reflector Telescope has 30% more light-gathering power than the 114mm Celestron telescope

Further more all the SLT Series comes with the fully computerized hand control set that enable the user to automatically track to view any of its 4,000+ objects, including over 600 galaxies, 300 clusters, and dozens of beautiful binary stars.

Because of the Newtonian design, the mirror gives fully color-corrected views that are best suited for astronomical use.


Buy a Celestron NexStar 130 SLT

Computerized Telescope

Portable, User-friendly Design

- Powered by 8 AA user-supplied batteries or an optional AC adapter.


Celestron’s Revolutionary SkyAlign

Using Celestron’s auto align system (SkyAlign), you’ll spend your evening observing, not aligning your telescope!


The 130mm aperture of the NexStar 130 SLT gathers well over two and a half times as much light as even an advanced 80mm refractor, for not much more money, giving you deep space images that are bright and well defined. But the solar system is not slighted in this Celestron telescope. With the appropriate high power eyepiece and a resolution 62% higher than an 80mm scope, it will give you lunar/planetary images that are crisp and detailed. The big 1.73° field of its standard eyepiece is superb for scanning wide deep space vistas. It will more than hold the full Pleiades open star cluster within its field. Put in an optional 32mm eyepiece and you get a huge 2.5° field wide enough to nearly encompass the great galaxy M31 in Andromeda in its entirety.
Whether an advanced entry-level scope for the beginning astronomer, or a second scope for the more-than-casual backyard astronomer, the NexStar 130 SLT has the features and optical performance that will keep any sky watcher happily observing for years to come.

Telescope’s Optical System

  • Newtonian reflector optical system: 130mm (5.1”) aperture 650mm focal length f/5 reflector with all-glass mirrors. Each mirror is coated with highly reflective aluminum and overcoated with quartz for long life. No plastic mirrors. The optical tube is made of aluminum, for fast cooldown in the field. The tube’s lower end is sealed to reduce image-degrading thermal currents in the optics. The optical tube is connected to the mount by a no-tool quick-release dovetail system for fast set-up and take-down. You can collimate (align) the mirrors for the sharpest images, although this will rarely have to be done, thanks to the push-pull collimation system that locks in the optical alignment for minimal maintenance. The f/5 focal ratio can provide both low power wide-angle views and high power close-ups. The reflector design of the scope is free of the purple haze of spurious color visible around the Moon and planets in lesser refractor scopes. Images are sharp and clear.
  • Finderscope: Star Pointer non-magnifying variable brightness red dot finder on a quick-release dovetail mounting bracket. The Star Pointer is a quick and easy way to point your telescope exactly to the desired object in the sky. There’s no need to worry about the inverted images you see through traditional finders. Just align the red dot seen in the Star Pointer with the desired star in the sky and you’re done.
  • Focuser: 1.25” rack and pinion.
  • Two eyepieces: The first is a 1.25” 25mm fully coated Kellner (26x). The eyepiece field of view is 1.73° across, more than three times as wide as the full Moon for expansive views of nebulas, galaxies, and open star clusters. The second is a 1.25” 9mm fully coated Kellner (72x) with a 0.63° field for more close-up views of the Moon, planets, and globular star clusters.

This Telescope’s Mount

  • Fork mount/drive system: Single fork arm altazimuth design with pre-installed dual DC servo motor drives. A compartment in the drive base accepts eight user-supplied AA batteries for powering the telescope. Selectable lunar, solar, or sidereal (star) tracking rates, with nine different slewing and centering speeds for locating objects (4°/sec, 2°/sec, 1°/sec, 0.5°/sec, and 32x/16x/8x/4x/2x the sidereal rates). For more details, click on the “mount” icon above.
  • NexStar computer control: The supplied computer hand control has an illuminated numeric keypad and a two-line 16-character LCD display. It has a database of 4,033 stars and objects, including the complete Messier and Caldwell catalogs of famous deep space objects; a selection of the brightest and best deep space objects from the Revised New General Catalog (NGC); selected SAO stars, including the best variable stars and multiple star systems; the planets; the Moon; and more.
    A few keystrokes on the NexStar hand control automatically slews the NexStar 130 SLT to any of those 4,033 objects, including over 600 galaxies, 300 star clusters, and dozens of beautiful binary stars. The computer’s software can be flash upgraded via the internet so you will always have the most up-to-date software version available. For more details, click on the “computer” icon above.
  • SkyAlign Technology: With new patent-pending Celestron SkyAlign technology, you don’t have to know Altair from Zubenelgenubi or know how to read a star chart to line up your telescope on the sky. Simply input the date, time, and your location into the computer hand control. The computer will normally default to your last observing site automatically, but can remember up to ten different favorite observing locations for you to choose from.
    Once you’ve entered the date, time, and location, use the Star Pointer red dot finder to align the telescope on any three bright stars, or to two stars and a bright planet or the Moon. The NexStar computer system will automatically determine which objects were chosen and then generate an internal map of the sky that lets it move automatically to any star or object you select for the rest of the night.
    After the scope has aligned itself with the sky, it takes only a few keystrokes on the computer hand control to have the scope move automatically to your night’s first observing target and start tracking it so you can observe at your leisure. You can find hundreds of fascinating deep space objects your first night out, even if you have never used a telescope before. No matter what level of experience you start from, your NexStar SLT scope will unfold all the wonders of the Universe for you, your family, and your friends. For more details, click on the “computer” icon above.
  • Supplied software: The scope comes with a CD-ROM of TheSky Level 1 planetarium and star charting software. This Windows-based program will let explore the Universe on your PC and print out custom star charts of the sky to help you find faint objects that are not in the scope computer’s database. In addition, you also get the NexStar Observer’s List (NSOL) control software. This program lets you connect your SLT scope to your Windows-based laptop or PC (with an optional RS-232 cable). It brings up on your computer screen a list of all the objects it the scope’s database. Simply click on any of the objects in the list and the scope will slew to that object (if it’s above the horizon) and start tracking it for you to observe. For more details, click on the “software” icon above.
  • Adjustable height tripod: The preassembled tripod has stainless steel legs to damp vibrations quickly. The center leg brace holds a convenient no-tool quick-release accessory tray to keep your eyepieces and accessories up and out of the dew-soaked grass.
  • Two-year warranty: All Celestron telescopes have a two-year warranty, double that of competitive scopes.


NexStar 130 SLT Computerized Mount Features

- Proven NexStar computer control technology
- Database allows telescope to locate over 4,000 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

Buy a Celestron NexStar 130 SLT

Computerized Telescope

Manufacturer Celestron
Recommended Usage Astrophotography, Viewing the Moon, Viewing the Planets, Viewing Galaxies/Stars, Viewing Nebulae
User Level For the Hobbyist
Optical Design Reflector
Aperture 130 mm (5.12 in)
Focal Length 650 mm (25.59 in)
Focal Ratio
Eyepiece 1 25 mm (0.98 in)
Magnification 1 26 x
Eyepiece 2 9 mm (0.35 in)
Magnification 2 73 x
Finderscope StarPointer
Mount Motorized Altazimuth
Accessory Tray No Tool, Quick release
Tripod Steel
CD ROM “The Sky®” Level 1 and NexStar Observers List (v2.6.4c))
Highest Useful Magnification 307x
Limiting Stella Magnitude 13.1
Resolution (Rayleigh) 1.07 arcsec
Resolution (Dawes) 0.89 arcsec
Photographic Resolution
400 line/mm
Light Gathering Power 345 x
Angular Field of View 1.7 °
Linear Field of View (@1000 yds) 91 ft (27.74 m)
Optical Coatings Aluminum
Secondary Mirror Obstruction 1.7 in (43.18 mm)
Secondary Mirror Obstruction by Area 11 %
Secondary Mirror Obstruction by Diameter 33.2 %
Computer Hand Control Fully Computerized / Flash Upgradeable
Slew Speeds Nine slew speeds: 4°/sec, 2°/sec, 1°/sec,
.5°/sec, 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
Weight 18 lb (8.16 kg)
GPS Optional CN-16 GPS Accessory

Difference between

Reflecting and

Lenses Telescopes

When people think of telescopes, reflecting telescopes are usually the last things that come to mind. Rather, people tend to think of a straight tube with lenses at either side.

This is unfortunate, since there are several ways to bend light so that it is magnified to the point where a person on the ground can make out the features on Jupiter, the billowing gasses of a distant nebula, or the light of distant stars.

In fact, if a stargazer wants to peer into the inky voids of space with a scope of manageable size, a reflecting telescope will serve them well. Reflecting telescopes use mirrors to magnify images, allowing the image to be enlarged a few times before coming through the eyepiece.

This is simpler to implement than a standard, straight-through refracting telescope, as it allows several smaller adjustments to the image than a few, very large changes with lenses. And, by doing this with mirrors, the design of the telescope can be made much more compact, allowing more magnifications of an image in a smaller telescope.

Understand Reflecting Telescopes

In order to understand reflecting telescopes, you must begin by understanding the fact that there are two methods of focusing light so that objects seem closer. The first method is through lenses, which use refracting to bend light and focus it. The second method is with mirrors, which can be shaped to reflect light in such as way that small, distant objects appear to be very close and easily visible.

There are two general designs for reflecting telescopes: the Newtonian and the Cassegrain and its variants. The first type, Newtonian, is a very simple design and it is very popular with amateurs who want to home-build a telescope. In the Newtonian design, there is one large mirror at the base of a long tube, and the mirror is focused onto a flat mirror that redirects the image toward an eyepiece. This design was originally created by Isaac Newton, and it was the first successful design for a reflecting telescope.

The second type of reflecting telescope, the Cassegrain and its variants, uses two mirrors to create the image. One large mirror is set up at the base of a tube, with a smaller mirror facing it at the top of the tube. The light comes in through the top, is focused by the larger mirror, and reflected back by the smaller mirror and sent through a hole in the larger mirror and on to the eyepiece. This makes the Cassegrain telescope look like a refracting telescope, though they function very differently. However, their ultimate aim is the same: to allow people to see things that are very far away.

When looking for a telescope, reflecting telescopes are some of the best that can be found. They are effective, easy to use and, in some cases, easy to build – making them the preferred choice for professional astronomers and backyard hobbyists. So, when thinking about telescopes, don’t just think picture the lenses that usually come to mind, think about remarkable properties of mirrors and reflecting telescopes.