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Celestron NexStar 102 SLT Telescope


SKU: 22096
Manufacturer: Celestron
UPC: 050234220965
Telescope Type: Achromatic Refractor
Aperture (in.): 4 inches
Aperture (mm): 102 mm
Focal Ratio: f/6.5
Focal Length: 660 mm
Limiting Visual Magnitude: 12.7
Eyepiece 1: 25 mm
Magnification with Eyepiece 1: 26x
Eyepiece 2: 9 mm
Magnification with Eyepiece 2: 73x
Star Diagonal: 1.25-inch prism
Power Requirements: < 2.5 amps @12 VDC
Power Supply: 8-AA Batteries
Weight Fully Assembled: 14 lbs.


The Celestron NexStar 102 SLT is a compact beginner telescope that is sure to please the first time buyer. 

The Celestron NexStar 102 SLT is a short tube refractor that is easy to transport and use. You'll find that astronomical viewing is a delight with this powerful 4" telescope. The NexStar 102 SLT offers a 63% increase in image brightness over 80mm models. This is an advantage when moving beyond the moon and planets to deep space objects.

Celestron NexStar 102 SLT

Like the other models in the SLT Series, the NexStar comes with a fully computerized hand control with a database of over 4,000 celestial objects! With its pre-assembled, adjustable steel tripod, the NexStar 102 SLT can be up and ready to use in a matter of minutes. Our new SkyAlign alignment technology and the included StarPointer Finderscope with a red LED makes aligning a breeze.

As with any telescope, the potential is subject to your local skies. A four-inch refractor reveals the veil nebula under magnitude 5.5 skies, as well as the spiral arms of the Whirlpool Galaxy under magnitude 6.5 skies. Neither of these sights are practical using even an eight-inch telescope under light polluted urban skies with a limiting magnitude of less than four. This is a fine, widefield telescope for studying the moon, star clusters, and bright nebulae. Lunar and planetary observing should be limited to 150X magnification. This is more than adequate to observe a wealth of detail on the lunar surface, including the central peaks of larger craters or even the numerous small craters within the larger ones. This telescope will also reveal Saturn's rings and the alternating light and dark bands and zones of Jupiter.

Because of its wide 1.7 ° field of view, the NexStar 102 SLT is optimal for scanning large areas of the sky and for superb terrestrial (land) viewing. A wonderful entry to mid-level astronomical scope, with the use of an optional erect image diagonal, the 102 SLT can also be used as a land-based spotting telescope.

Standard Features and Accessories Include:

  • Computerized hand control with 4,000+ object database
  • Quick-release fork arm mount, optical tube and accessory tray for quick no tool set up
  • SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process
  • Comes with “The Sky” Level 1 planetarium software and NSOL telescope control software for controlling your telescope via computer
  • Internal battery compartment to prevent cord wrap during use
  • Sturdy stainless steel tripod
  • StarPointer finderscope to help with alignment
  • Auxiliary port for additional accessories such as GPS accessory
  • Motorized altazimuth mount and fully computerized hand control
  • U.S. and International city database to easily set your location
  • Flash upgradeable hand control software and motor control units.

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