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Celestron NexStar 90 SLT Computerized Telescope

Item# CELE375
 
5.0

(7 Ratings)

Customer Q & A
Details & Dimensions
Guarantee & Returns

What's Included?

"The Sky" Astronomy Software, Tripod, Accessory Tray

Description

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!


Intelligent Design

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.

 


Features

 

    • Proven NexStar computer control technology
    • High quality 90mm Maksutov-Cassegrain
    • Database allows telescope to locate over 4,000 celestial objects
    • Fully computerized Altazimuth mount
    • SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process
    • Quick-release fork arm mount, optical tube and accessory tray for quick no tool set up
    • Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
    • Sturdy stainless steel tripod and accessory tray included
    • Internal battery compartment to prevent cord wrap during use
    • Includes CD-ROM The Sky Astronomy Software which provides education about the sky and printable sky maps

 

 

 

About Celestron Maksutov-Cassegrain Telescopes


Celestron's Maksutov-Cassegrain telescopes are similar to Schmidt-Cassegrain models in regards to ease, durability, versatility, and minimal maintenance, but trade smaller fields of view for better resolution in planetary observation.


The Maksutov-Cassegrain is similar to the Schmidt-Cassegrain with essentially the same advantages and disadvantages. It uses a thick meniscus correcting lens with a strong curvature and a secondary mirror that is usually an aluminized spot on the corrector. The Maksutov secondary mirror is typically smaller than the Schmidt's which gives it slightly better resolution for planetary observing.


Advantages of Maksutov-Cassegrain Compared to Schmidt-Cassegrain

 

  • Smaller secondary obstruction results in a slight increase in planetary detail and contrast
  • Less expensive to manufacture
  • Longer focal lengths resulting in higher magnifications for planetary viewing


Disdvantages of Maksutov-Cassegrain Compared to Schmidt-Cassegrain

 

  • Slightly heavier because of the thick meniscus correcting lens
  • Increased time to reach thermal stability in larger apertures over 90 mm
  • Longer focal lengths resulting in smaller field of view

Supplier Sku:
22087

Dimensions & Specifications

Recommended Usage

Astrophotography , Viewing Galaxies/Star Clusters , Viewing Nebulae , Viewing the Moon , Viewing the Planets

Warranty

2-Year Limited

Features

Alt-Az Mount , GoTo

Brand

Celestron

Weight Complete

12 lbs

Finderscope

StarPointer

Lens Coating

Standard

GoTo

Yes

Good for Astrophotography

Yes

Telescopes Series

Celestron NexStar SLT Telescopes

Optical Design

Maksutov-Cassegrain

Aperture

90mm

Focal Length

1250mm

Focal Ratio

f/14

Mount Design

Motorized Altazimuth

Battery Included

No

Eyepiece 1

25mm (50x)

Highest Useful Magnification

213x

Star Diagonal

1.25 Inch

User Level

For the Beginner , For the Enthusiast

Object Database

4000 objects

Component

1.29 Resolving Power , 1.55 Resolution , 12.3 Limiting Magnitude , 9mm (139x) Eyepiece 2

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The Perfect Accessories

Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
Celestron NexStar 90 SLT Computerized Telescope
 
4.9

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (6)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Compact (7)
  • Quality lenses (7)
  • Strong construction (7)
  • Accurate (6)
  • Lightweight (5)

Cons

    Best Uses

    • Astronomy (7)
      • Reviewer Profile:
      • Casual/ recreational (6)
      • Was this a gift?:
      • No (4)

    Reviewed by 7 customers

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    Displaying reviews 1-5

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    (0 of 1 customers found this review helpful)

     
    5.0

    Very Happy

    By Lance

    from WILLIAMSTOWN,NJ

    About Me Casual/ Recreational

    Verified Buyer

    Pros

    • Accurate
    • Compact
    • Easy to Use
    • Lightweight
    • Quality Lenses
    • Strong Construction

    Cons

      Best Uses

      • Astronomy

      Comments about Celestron NexStar 90 SLT Computerized Telescope:

      First night out saw Jupiter and it's four moons. The computer controls were easy to use. Very happy

      • Was this a gift?:
      • Yes
       
      5.0

      No regrets

      By Michael

      from WINSTON SALEM,NC

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Accurate
      • Compact
      • Lightweight
      • Quality Lenses
      • Strong Construction

      Cons

        Best Uses

        • Astronomy

        Comments about Celestron NexStar 90 SLT Computerized Telescope:

        Very happy with this Telescope. Was able to view Jupiter this weekend with my sons. Package arrived Friday and we were gazing at the sky that night. No regrets at all.

        • Was this a gift?:
        • No

        (1 of 1 customers found this review helpful)

         
        5.0

        Excellent Telescope

        By Jesse

        from NAZARETH,PA

        About Me Avid Adventurer

        Verified Buyer

        Pros

        • Accurate
        • Compact
        • Easy to Use
        • Lightweight
        • Quality Lenses
        • Strong Construction

        Cons

          Best Uses

          • Astronomy
          • Bird Watching
          • Hiking/Backpacking

          Comments about Celestron NexStar 90 SLT Computerized Telescope:

          Received it quickly and tested it out using birds and other terrestrial objects. The included eyepieces are excellent and provide a clear crisp image. I own several telescopes and this is by far my favorite. For astronomical viewing it returns excellent images and does not distort them.

          • Was this a gift?:
          • No
           
          5.0

          great telescope

          By David

          from ASTORIA,IL

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Accurate
          • Compact
          • Quality Lenses
          • Strong Construction

          Cons

            Best Uses

            • Astronomy
            • Bird Watching

            Comments about Celestron NexStar 90 SLT Computerized Telescope:

            I,m a newbee so this is my second telescope,first scope I had was a cheap refractor type,the starfinder was a little hard to align but I was told to set it on a small object using 25mm in daytime,which worked great.it takes a little while to align with three stars,just make sure tripod
            is level,,all in all this is a great scope, well worth the money,
            optics are top quality, I suggest you also purchase the filter eyepiece kit ,it makes scope easier to use for star gazing and daytime observing,birds etc.highly recommend this scope and hayneedle has great price.

            • Was this a gift?:
            • No

            (3 of 4 customers found this review helpful)

             
            4.0

            First Scope

            By Dad

            from Iowa

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Accurate
            • Compact
            • Easy to Use
            • Lightweight
            • Quality Lenses
            • Strong Construction

            Cons

              Best Uses

              • Astronomy

              Comments about Celestron NexStar 90 SLT Computerized Telescope:

              First scope, so my opinions should be taken as purely amateur. We got it for the kids for Easter but I was able to take it out of the box, assemble it and try it out Easter-Eve, and I've been very impressed with it. Assembly took about 20-25m or so: not too bad at all. The tri-pod is rock solid on adjustable legs. The two included eyepieces work great, and I had a 2x Barlow (from a previous attempt to buy a telescope) that fit into the rotation seamlessly. We had a near-full moon here and I was able to check it out with ease, and it makes a pretty good object to use to ~bore-sight the red dot/aiming finderscope that mounts inline along the body of the main scope. With the less-powerful eyepiece you can fit the whole full moon in the view, the greater magnification piece = you can begin to easily focus on quarters or eighths of the moon. When I put the 2x Barlow in in conjunction with either of the two included, I was able to focus on craters inside of craters, though the tracking understandably becomes more difficult at that point. The focus control is very simple to use. I have not yet experimented with much of the computerized automation, only tried this scope with the moon and used the adjustable-rate motor to track it. My next target of interest is Saturn (if it's around?), and I'm really looking forward to this weekend when the kids will be able to stay up late enough to check it out without having to worry about getting up for school. I'll have to experiment with the triangulation that is required before we can use the pre-programmed celestial spotting functions of the scope. One other note, our celestron Power Tank is still on backorder, but the scope functioned without any trouble at all on the required AA battery power. We decided the Power Tank would be a good investment when taking the car out away from the city lights as far as possible for stargazing on summer nights. This seems like a really solid investment for an entry-level telescope, and I'm eager to let the kids have a try with it. The only reasons I gave four stars is because I can't have tested for longevity/durability yet, and because I don't have any relativity to compare it against any other products since this is my first scope. My initial experience with it was five stars, so I hope that will remain the case. OK cheers,

              • Was this a gift?:
              • No

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