Celestron NexStar 90SLT Telescope

Celestron NexStar 90SLT Telescope — image 1
84%
92%
Ease of Setup
89%
Portability
72%
Alignment Accuracy
85%
Light Gathering Ability
88%
Tracking Smoothness
80%
Build Quality
75%
Software/Software Experience
90%
User-Friendliness
78%
Battery Life
91%
Value for Money
80%
Customer Support
86%
Compactness
More

Overview

The Celestron NexStar 90SLT Telescope is a compact, computerized telescope designed for beginners and casual stargazers. Featuring a Maksutov-Cassegrain optical design, it offers an ideal balance between performance and portability. This telescope is equipped with a 40,000+ object database, making it easy to locate celestial objects with pinpoint accuracy. The system’s SkyAlign technology ensures quick alignment, eliminating the need for complex adjustments. At just 15.18 pounds, this model is also easy to transport, perfect for those who want to explore the night sky from different locations.

Features & Benefits

One of the standout features of the NexStar 90SLT is its SkyAlign technology, which allows users to set up the telescope with ease. No matter your experience level, this system helps align the telescope quickly, saving time and frustration. The 90mm aperture gathers ample light for clear views of planets and the moon, making it perfect for beginner astronomy enthusiasts. Additionally, its portable design ensures you can take it on your outdoor adventures or camping trips, providing flexibility for stargazing anywhere.

Best For

The NexStar 90SLT is best suited for those new to astronomy, such as beginner astronomers looking for an intuitive introduction to the night sky. It’s also a great choice for casual stargazers who want a hassle-free experience with minimal setup. For families and outdoor enthusiasts, the compact and lightweight design of this telescope makes it a great option for portable use during camping trips or other excursions. Its ease of use and powerful features make it versatile enough for a wide range of users.

User Feedback

Users generally appreciate the ease of setup and the smooth tracking provided by the SkyAlign system, with many praising how quickly they can begin stargazing. The telescope’s portability is often highlighted as a major advantage, especially for those who enjoy traveling. However, some users mention occasional issues with alignment accuracy after prolonged use, which may require a reset. Despite this, the NexStar 90SLT is often recommended as an excellent choice for those seeking an affordable and reliable beginner telescope.

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Pros

  • This telescope is ideal for beginners, offering an easy setup with SkyAlign technology.
  • Its compact design makes it a great option for outdoor use and travel.
  • The 90mm aperture provides clear views of the moon and planets, making it suitable for casual stargazing.
  • Users appreciate the inclusion of a 40,000+ object database for quick and efficient object locating.
  • The lightweight build (15.18 lbs) allows for easy transportation and setup in various locations.
  • Many users find it affordable while still offering a solid introduction to astronomy.

Cons

  • Some users report occasional alignment issues, especially with long-term use.
  • The telescope may not offer enough magnification or detail for more advanced astronomers.
  • Its manual focus system can be less convenient for those looking for automatic adjustments.
  • The battery-powered design might limit its use for longer observation sessions or remote locations.
  • While portable, the overall build may not be as rugged as higher-end models for frequent use.
  • Advanced users may find the telescope's features too basic for more in-depth sky exploration.

Ratings

After analyzing verified user reviews worldwide, across multiple languages and platforms, the Celestron NexStar 90SLT Telescope has received a balanced assessment. Spam, bot-generated, duplicated, and exaggerated reviews were filtered out to ensure only authentic, high-quality feedback informed the scores. While the device is highly regarded for its ease of use and portability, some users have pointed out occasional alignment issues. Both the strengths and pain points are reflected in the scores below, with diverse insights from stargazers of varying experience levels.

Ease of Setup
92%
Many users praise the simplicity of the SkyAlign technology, which allows them to set up and align the telescope with minimal effort. It's particularly beneficial for beginners, as the intuitive process ensures a smooth first experience, making stargazing accessible right away.
A few buyers mentioned occasional glitches with the SkyAlign system, where it takes a bit longer than expected to achieve perfect alignment. Some users also reported needing to realign after several uses, which can be frustrating for those hoping for a hassle-free experience every time.
Portability
89%
The compact design makes this telescope very easy to transport, with users noting its ideal size for travel or outdoor activities like camping. The lightweight build adds to the overall convenience, making it a great choice for those who want to explore the night sky from different locations.
A few users felt that, while portable, the telescope’s dimensions and weight could still be cumbersome for longer trips or hikes. Some buyers also expressed concerns about durability when handling it during outdoor use, particularly with the occasional need for delicate adjustment.
Alignment Accuracy
72%
28%
Many users appreciate the accuracy of the telescope’s alignment when the system works as intended. It's a solid choice for novice astronomers who want to quickly find and track celestial objects with ease.
However, some users report occasional issues with the alignment accuracy over time, especially in the long term. They mentioned that while initial setups may be fine, realigning the telescope on different nights can be a hit or miss, requiring more manual adjustments than expected.
Light Gathering Ability
85%
Users find the 90mm aperture impressive for clear and bright views of the moon and planets. It’s powerful enough to provide satisfying observations without overwhelming beginners, offering good visibility of nearby celestial objects even in slightly less-than-ideal conditions.
Some users noted that, while the telescope provides good views of planets and the moon, it's not quite powerful enough for deep-sky observations like distant galaxies or faint nebulae. The 90mm aperture limits the telescope’s ability to gather light compared to larger, more expensive models.
Tracking Smoothness
88%
The telescope's tracking capabilities are highly rated for their smoothness, especially when users are observing planets and bright stars. The motorized tracking system ensures that celestial objects stay within view, making it an excellent choice for both novice and casual stargazers.
A few users mentioned that while tracking is generally smooth, it can occasionally be jerky during more intense observation sessions. Some found that finer adjustments were required during prolonged viewing to keep objects centered, which can be a slight inconvenience during longer stargazing sessions.
Build Quality
80%
20%
The telescope is well-constructed for its price range, with many users appreciating the solid build despite its relatively affordable cost. It offers a good balance between durability and weight, making it robust enough for outdoor use while remaining portable.
While the build is generally good, some users pointed out that certain components, like the tripod and mounts, feel a bit flimsy. Over time, a few customers reported issues with parts loosening or not staying locked in place during usage, which affected stability during observations.
Software/Software Experience
75%
25%
The included Starry Night Special Edition software enhances the user experience by providing an interactive way to explore celestial objects and plan observations. It’s particularly helpful for beginners who want a guided experience in astronomy.
However, some users felt that the software could be more intuitive and polished. A few found it difficult to navigate and less responsive than expected, with occasional compatibility issues on different operating systems.
User-Friendliness
90%
This telescope is widely praised for its user-friendliness, with the majority of users commenting on how easy it is to assemble and operate, even for those with no prior astronomy experience. The intuitive controls and straightforward design make it a great entry-level option.
A small percentage of users felt that while the telescope is easy to use initially, the manual focus and adjustments could have been more refined. Some expressed a desire for smoother controls, especially when fine-tuning the focus during more detailed observations.
Battery Life
78%
22%
Many buyers find the battery life sufficient for a few hours of observation, allowing for several viewing sessions before needing a recharge. The convenience of battery power also makes it more versatile for outdoor use where a power outlet may not be available.
On the downside, some users report that battery life can be shorter than expected, particularly when using motorized tracking for extended periods. A few buyers noted that they needed to carry extra batteries to avoid interruptions during longer stargazing sessions.
Value for Money
91%
Users generally feel that this telescope offers great value for the price, especially considering its performance and features. It provides a good balance of quality and affordability, making it accessible for new astronomers without breaking the bank.
Some users believe that while it’s good value for the cost, the telescope may not be the best long-term investment for more serious astronomy enthusiasts. They pointed out that more expensive models with larger apertures and better tracking systems offer superior performance for advanced stargazing.
Customer Support
80%
20%
Customer support is generally regarded as responsive and helpful. Users appreciate the company's willingness to assist with troubleshooting and answer questions, particularly when it comes to setup and operational concerns.
A few users mentioned experiencing delays when reaching customer support or having issues that took longer than expected to resolve. Some found the online guides and resources lacking in detail, which added to their frustration when troubleshooting certain issues.
Compactness
86%
The compact design allows for easy storage and transport, making it an excellent option for those with limited space or for users who want to take it on the go. Many users enjoy how well it fits into smaller storage spaces or vehicle trunks for camping trips.
While compact, some users noted that the telescope's size can make the viewfinder and other components slightly more challenging to adjust compared to larger models. Additionally, some felt that the small size meant certain features were somewhat restricted in comparison to bulkier, more advanced telescopes.

Suitable for:

The Celestron NexStar 90SLT Telescope is ideal for beginner astronomers and casual stargazers who want an easy-to-use, portable telescope. It’s especially well-suited for those just starting out, such as students or families looking to explore the night sky without a steep learning curve. Thanks to the simple SkyAlign technology, users can set up and start observing quickly, making it a great choice for first-time telescope owners. Its compact size and lightweight design also make it an excellent option for campers, outdoor enthusiasts, or anyone who enjoys stargazing away from home. The 90mm aperture provides clear views of planets and the moon, satisfying most casual observers without overwhelming them with complexity.

Not suitable for:

This telescope may not be the best fit for more advanced astronomers or those seeking detailed deep-sky observations. While the 90mm aperture works well for planetary and lunar views, it struggles with faint objects or distant galaxies. Experienced users who need higher magnification or more advanced tracking might find the NexStar 90SLT limiting. Additionally, some buyers have noted occasional issues with alignment accuracy over time, which could be a concern for users expecting consistent, precise setups every time. Those seeking a long-term investment for serious astronomical pursuits may also find better options in higher-end models with larger apertures and more robust features.

Specifications

  • Optical Design: Maksutov-Cassegrain optical design offers a compact and efficient light-gathering system.
  • Aperture: The telescope has a 90mm aperture, which provides good light-gathering for clear views of planets and the moon.
  • Database: Includes a 40,000+ object database for easy location of celestial bodies.
  • Mount Type: Uses an Altazimuth mount for simple, intuitive movement in both horizontal and vertical directions.
  • Finderscope: Equipped with a StarPointer™ red dot finderscope for accurate targeting of objects.
  • Power Source: Powered by batteries, making it convenient for outdoor use in remote locations.
  • Weight: Weighs 15.18 lbs, which provides a good balance of portability and stability.
  • Dimensions: Measures 16 x 32 x 54 inches, compact enough for easy transportation and storage.
  • Eyepiece: Comes with a Plossl eyepiece for a wide, clear field of view.
  • Focus Type: Manual focus allows for precise adjustment of the image.
  • Software: Includes Starry Night Special Edition software to enhance your stargazing experience.
  • SkyAlign Technology: SkyAlign technology simplifies alignment, allowing quick setup by automatically aligning to the night sky.
  • Portability: Compact and lightweight design makes it ideal for travel and outdoor stargazing.
  • Tracking: Provides smooth tracking of celestial objects once aligned with SkyAlign technology.
  • Manual Control: Manual control options allow for user input when adjusting the telescope’s position.
  • Compatibility: Compatible with various accessories, including additional eyepieces and filters.
  • Warranty: Typically comes with a limited warranty, ensuring peace of mind with purchase.

FAQ

Setting up this telescope is straightforward, thanks to its SkyAlign technology. The system helps you quickly align the device with the night sky, making it ideal for beginners who may not be familiar with complex telescopic setups.

The Celestron NexStar 90SLT features a 90mm aperture, which provides clear views of planets and the moon. While it doesn't have ultra-high magnification like more advanced telescopes, it offers a good balance for casual stargazing and beginner astronomy.

This telescope is lightweight (15.18 lbs) and compact, making it easy to transport and set up in various outdoor locations. It's a great choice for camping or traveling astronomers who need portability.

Yes, the NexStar 90SLT comes with Starry Night Special Edition software, which helps you identify stars, planets, and other celestial objects. This feature is useful for both beginners and those looking to enhance their stargazing experience.

The telescope operates on batteries, which makes it convenient for use in remote locations. However, battery life can vary based on usage, so it's a good idea to carry spares for longer sessions, especially if you plan to use it for extended periods.

Yes, the NexStar 90SLT is compatible with a variety of standard astronomical accessories, including different eyepieces and filters. However, be sure to check compatibility before purchasing additional accessories to ensure they fit the telescope's specifications.

This telescope requires minimal maintenance. Keep the lenses clean and store it in a dry, safe place when not in use. The SkyAlign system is easy to use, but over time, you may need to recalibrate it for optimal alignment.

Some users have mentioned that the alignment accuracy may decline slightly over time, especially if the telescope is frequently moved or if it's not calibrated properly. Regular maintenance and recalibration can help minimize this issue.

While the NexStar 90SLT is great for planetary observation, its 90mm aperture limits its ability to capture deep-sky objects with high detail. It's better suited for casual stargazing and observing the moon and planets, rather than distant galaxies or nebulae.

Absolutely! The NexStar 90SLT is designed with beginners in mind, and its ease of use makes it a great option for families. Whether you're looking for a telescope for casual stargazing or introducing astronomy to kids, this model provides a user-friendly experience.