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Celestron

Celestron 22087 NexStar 90SLT-Mak Portable Computerised Maksutov-Cassegrain Telescope with Quick-Release Fork-arm Mount, Accessory Tray and 'Starry Night' Special Edition Software, Grey

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Style: NexStar 90 SLT


Set: Telescope Only


Features

  • Computerized Star Locating Telescope: The Celestron NexStar 90SLT is a computerized telescope that offers a database of more than 40,000 stars, galaxies, nebulae, and more. The telescope locates your object with pinpoint accuracy and tracks it
  • Compact and Portable: This telescope for adults and kids is ideal for weekend camping trips or excursions to dark sky sites. Its compact form factor makes it easy to transport and assemble just about anywhere
  • Maksutov-Cassegrain Optical Design: The NexStar 90SLT is the smallest in the SLT family. The 90mm aperture gathers enough light to see our Solar System and beyond. View Saturn's rings, Jupiter's cloud bands, and the Moon in brilliant detail
  • Fast Setup with SkyAlign: Celestron's proprietary SkyAlign procedure has you ready to observe in minutes. Simply center any three bright objects in the eyepiece and the NexStar SLT aligns to the night sky, ready to locate thousands of objects
  • The NexStar 90SLT Computerized Telescope includes a free download of one of the top consumer-rated astronomy software programs for an interactive sky simulation
  • UNBEATABLE WARRANTY AND CUSTOMER SUPPORT: Buy with confidence from the worlds #1 telescope brand, based in California since 1960. Youll also receive a two-year warranty and unlimited access to technical support from our team of US-based experts.

Description

The Celestron NexStar 90SLT is a computerized telescope that offers a database of more than 40,000 stars, galaxies, nebulae, and more. The telescope locates your object with pinpoint accuracy and tracks it. At the heart of the telescope's Maksutov-Cassegrain optical design, a 90mm primary mirror gives fully color-corrected views ideal for astronomical use. The 90SLT comes with a fully computerized NexStarPlus hand control. The computerized hand control gives you the ability to automatically slew to any of its 40,000+ objects, including over 600 galaxies, 300 clusters, and dozens of beautiful binary stars. This telescope for adults and kids is ideal for weekend camping trips or excursions to dark sky sites. Its compact form factor makes it easy to transport and assemble just about anywhere. With its pre-assembled, adjustable steel tripod, the NexStar 90SLT can be up and ready to use in a matter of minutes. Our SkyAlign alignment technology and the included StarPointer Finderscope with a red LED make aligning a breeze. Simply center any three bright objects in the eyepiece and the NexStar SLT aligns to the night sky, ready to locate thousands of objects. The NexStar 90SLT Computerized GoTo Telescope also includes a free download of our Starry Night Special Edition astronomy software for an interactive sky simulation. This computerized telescope allows you to view the lunar surface, the rings around Saturn, the moons of Jupiter, and a number of the Messier objects, such as the globular cluster in Hercules (M13) or the Great Nebula in Orion (M42). Celestron's NexStar 90 SLT is the most compact telescope in Celestron's computerized NexStar line, with excellent Maksutov-Cassegrain optics that deliver delightful views of the Moon and planets. The NexStar 90 SLT package includes everything but the batteries. With a fully illustrated quick set-up guide, no tools are needed to assemble the telescope with its steel tripod, motorized mount, and computer hand control. Two eyepieces are included, a 25mm for 50X magnification and a 9mm eyepiece for 139X. The package even includes the latest version of "The Sky X", software that turns your PC into a virtual planetarium. The Maksutov optical design of the NexStar 90 SLT gives the telescope a focal length of 1250mm in an optical tube only twelve inches long. This long focal length is ideal for bringing out detail on the Moon and planets. When I look at the Moon for example, the view is crisp and clear with no trace of false color. When I look at Saturn I can easily push the magnification to 200X with an optional 6mm plossl eyepiece. When I look at deep space objects I often like to use an optional 32mm plossl eyepiece (39X magnification) because objects like M45 the Pleiades cluster and M31 the Andromeda galaxy look better with a wider field of view. The NexStar 90 SLT also features Celestron's patented SkyAlign technology. With SkyAlign I don't need a star chart or a compass to align the telescope, I just enter the date and time then point the telescope at three bright stars. SkyAlign tells me the star names, and allows the telescope to find over 4,000 stars, planets, and galaxies by just pushing a button. The accurate tracking makes it easy to get high power views of the planets, and allowed me to take some great pictures using a Celestron NexImage webcam. I also like the "Two-Star align" and "Solar System align" modes because I can often get the NexStar system up and running while older scopes are still waiting for their alignment stars to appear in he twilight. I enjoy using the NexStar 90SLT because it has excellent optics in a compact, twelve pound package that I can carry outside in one trip and be ready to go in minutes. A computerized telescope may take practice to set up; if I don't enter the time correctly the alignment may fail for example. The other drawback of a computerized telescope, of course, is the short life of standard AA batteries. A rechargeable 12-Volt battery is a handy way to power the NexStar 90SLT, and I like to keep the tripod legs short and observe while seated because this gives me a solid and comfortable view. --Jeff PhillipsPros:Excellent optics Compact and portable Easy computerized go-to tracking "The Sky X" planetarium software included Cons:Short battery life with AA batteries Suggested Options: Celestron Accessory Kit Celestron PowerTank battery Quarter Moon shot at 50X with a Powershot camera Quarter Moon closeup shot at 200X with Neximage camera Crater Ptolemaeus shot at 400x with Neximage and 2x barlow Planet Mars shot at 400x with Neximage and 2x barlow Planet Saturn shot at 400x with Neximage and 2x barlow

Brand: Celestron


Model Name: NexStar 90SLT


Optical Tube Length: 21 Inches


Eye Piece Lens Description: Plossl


Objective Lens Diameter: 9E+1 Millimeters


Telescope Mount Description: Altazimuth Mount


Product Dimensions: 16"D x 32"W x 54"H


Focus Type: Manual Focus


Power Source: Battery Powered


Finderscope: StarPointer™ red dot finderscope


Product Dimensions: 16 x 32 x 54 inches


Item Weight: 15.18 pounds


Item model number: 22087-CGL


Batteries: 1 Lithium Metal batteries required. (included)


Is Discontinued By Manufacturer: No


Date First Available: November 1, 2003


Manufacturer: Celestron


Language: English


Country of Origin: China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • This is an awesome beginner Telescope!
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
Review Image by Derek Dailey Derek Dailey
I have use this to view the Sun (with a Bader solar filter), Moon, Jupiter, Saturn, Albireo, Andromeda, and Pleiades. You get stunning views of the moon and sunspots are very distinguishable with this scope. Saturn is pretty small, but the rings are distinct and some moons can be spotted around Saturn. I was able to faintly see the bands of Jupiter and the Galilean moons are pretty bright. You would need a bigger telescope to get more detail from the planetary objects, but the views you get in this scope still makes anyone who looks pretty amazed at what they are viewing. I love the fact this has a computerized tripod mount. This takes the frustrations away of trying to keep an object in view as well as trying to locate something in the vast night sky. The setup take some practice, but it does get easier after a few attempts. My neighbor has an 8” Nexstar SL with the StarSense Automatic Alignment Accessory and I still usually beat him to having an aligned telescope by doing it with the built in SkyAlign method. The tracking is good as long as you have fresh batteries, but I highly recommend using an external power source because the batteries get drained in a few hours. I also recommend using an app to help locate objects. I am planning on getting the WiFi modules so I can use my phone to control the telescope. The included hand controller does take some time to learn, and the menu navigation can be clunky. You can use the free Celestron SkyPortal app for control your scope if you have the WiFi module. Once you have the telescope aligned it is pretty accurate on its tracking. One night I centered Saturn and went inside to watch TV for 2 hours and I was amazed that Saturn was still in the eyepiece when I came back out! You will want to make sure you have the tripod level, fresh batteries, the correct latitude/longitude, time, and date to help ensure your tracking is accurate. This Telescope has made me excited to get out on clear nights and discover the night sky and has also helped get me into trying astrophotography. I was able to use my Olympus E-PL5 the other night piggy backed on the telescope which helped me get a decent shot of Andromeda. I took an hour of exposures it was nice to have the tracking of the telescope available so Andromeda stayed centered in my camera. I also bought a T-Adapter so I could photograph objects using the telescope as a prime lens. My sun and moon shots came out very clear using this method. The sun and moon shots attached are not cropped, and you can see almost the entire frame is consumed by the sun or moon which give a great amount of detail. I highly recommend this telescope! If you can afford a larger telescope, then get the biggest one you can afford, but even though this is only a 3 1/2" scope it can give you some great views of the night sky. ... show more
Reviewed in the United States on September 12, 2017 by Derek Dailey Derek Dailey
    • Great for the money
This was my first telescope, and after a solid 4 months I still do not regret my decision. Since then I've seen a lot of scopes to compare it with, and purchased some additional eyepieces. The original collimation still holds, and I've definitely knocked the thing around a lot bringing it up and down the stairs. I live in downtown Fort Lauderdale, Florida, and I can still see some pretty cool stuff on a night with average seeing (for down here). Planetary viewing is really good with this scope, with targets like Jupiter or Saturn really looking impressive. Deep sky objects are okay if you know what you're looking for, but the scope doesn't have a big enough aperture to pull in a lot of detail. I bought a set of 6 Orion eyepieces (way better quality than the stock Celestron ones) and it's been a very worthwhile upgrade. Getting the scope sky-aligned took a little practice, and to this day I can't get it to work perfectly. After aligning, a selected object will usually appear to one side of the field, and you need to center it out. If you're using a high magnification eyepiece you won't have a prayer of getting the object inside of the field too, but that's okay. Once you're locked on, the scope reliably tracks the target through the sky, which is really the important part. Another thing worth mentioning is that the batteries don't last long. Get the car power adapter and just plug it into one of those jump starter thingies. It'll last weeks on one of those without a problem. ... show more
Reviewed in the United States on April 14, 2014 by Seth's Bike Hacks
    • For Mak Lovers
Review Image by R.T. R.T.
Review Image by R.T. R.T.
Review Image by R.T. R.T.
Review Image by R.T. R.T.
Review Image by R.T. R.T.
Review Image by R.T. R.T.
Review Image by R.T. R.T.
Review Image by R.T. R.T.
I have a love for Maksutov-Cassegrain telescopes. Started with an 80mm x 500mm f/6.3 MTO 3M-6A. Moved up to a C90 Mak. Wanted a go-to so I traded laterally to this NexStar 90 SLT. Same 90mm x 1250mm f/13.9 as the C90. Maksutov pros: portability, planetary use, no collimation, meniscus corrector design Maksutov cons: not as "fast" and limited deep sky compared to refractors, long cooldown time 90 SLT pros: features to price ratio, easy connection for DSLR/Mirrorless with a T-Ring adapter 90 SLT cons: Sky-Align proving fussy I tried 3-star alignment on two occasions. Once from a Bortle 4 and once from a Bortle 3. Neither time would the scope "go to" Saturn after alignment. I'm sure it's operator error and I have to practice more. Went out in the field once and discovered Solar tracking not straightforward to unlock. I watched a tutorial and took notes so I'm sure the second time will be a success. (UPDATE: Solar Tracking successfully unlocked and working. YAY!) This telescope is PERFECT for APS-C cameras vs The Moon or The Sun (NEVER AIM YOUR TELESCOPE OR CAMERA AT THE SUN WITHOUT A SOLAR FILTER FOR THE PROTECTION OF YOUR EYES AND EQUIPMENT) With a level and balanced setup, Lunar tracking has been a breeze. As I said any other failures are likely on my part for planetary and solar go-to and tracking. Practice makes perfect. I'm still learning the NexStar system. I wish to expand my skills and get to Venus, Jupiter, Saturn and appropriate deep sky objects. This is a package I can definitely grow into. Attached pictures taken with the Celestron NexStar 90 SLT and a Sony a6300 APS-C Mirrorless camera. No images were stacked, these are single frame: Waxing Crescent final edit from ARW file Abstract Image final edit from ARW file (tracked the Moon and it went behind a tree - took unfocused shot to show the donut shaped bokeh of the reflex lens) 3x eyepiece projections onto a6300 sensor of Moon Details final edit from ARW file Solar image final edit from ARW file (I used a Spectrum Telescope Glass Solar Filter ST425G) (UPDATE: Solar closeup image - final edit from 12 ARW files, aligned & stacked) I also attached a chart showing how much of the sensor on APS-C is covered by the Moon. It would be the same coverage for the Sun as well. If Lunar and Solar observation/imaging is a primary focus for choosing a scope, the 90 SLT is a great choice. It is less of a "tight fit" to get the Moon or Sun onto an APS-C sensor than the 127 SLT to ensure you are imaging in the clearest part of the lens (the middle). Also, there is more weight left over to add camera/accessories onto the 90 SLT and not overburden the 8lb payload capacity of the mount vs the 127 SLT. Bonus feature for me: I plan on adding a small (perhaps 90mm x 500mm) achromatic refractor to my arsenal sometime in the future and the mount should be able to handle that well. ... show more
Reviewed in the United States on December 9, 2023 by R.T. R.T.

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