What Makes Celestron NexStar 90SLT Computerized Telescope Stand Out?
The Celestron NexStar 90SLT Computerized Telescope promises to bring the wonders of the universe to your backyard. Manufactured by Celestron, a name synonymous with quality optics, this telescope combines a compact Maksutov-Cassegrain design with user-friendly computerized GoTo technology. It’s designed for both beginners and experienced observers looking for a portable and capable telescope.
My journey to the NexStar 90SLT started with a familiar frustration. I have spent years teaching wilderness survival and tactical navigation; however, my knowledge of celestial navigation was lacking. I wanted a telescope that would not only allow me to explore the night sky but also help me learn the constellations and planets.
Unboxing the Celestron NexStar 90SLT, I was immediately struck by its manageable size and the solid feel of the components. The stainless steel tripod provided a stable base, and the optical tube, though compact, felt robust. The overall design seemed well-thought-out, with quick-release mechanisms for easy setup.
I considered the Orion StarBlast II 4.5 EQ Reflector and the Meade ETX90 Observer. The Orion was cheaper, but lacked the GoTo functionality I craved, while the Meade was more expensive. The NexStar 90SLT seemed to strike the perfect balance of price and features.
My first impression was one of cautious optimism. I was excited about the possibilities, but also slightly intimidated by the computerized mount. I hoped the Celestron NexStar 90SLT would deliver on its promise of making astronomy accessible to all.
Real-World Testing: Putting Celestron NexStar 90SLT Computerized Telescope to the Test
First Use Experience
My initial testing took place on a clear, dark night at a remote campsite I frequent for survival training. The open field provided an unobstructed view of the sky, ideal for testing the Celestron NexStar 90SLT’s capabilities. I wanted to see how easy it was to set up and align in a truly dark environment.
The computerized alignment process, using Celestron‘s SkyAlign technology, proved surprisingly straightforward. After inputting the date, time, and location, I simply pointed the telescope at three bright stars. The mount did the rest, and after a few moments, the telescope was ready to locate objects.
The performance was impressive, even on that first night. The 90mm Maksutov-Cassegrain optics delivered sharp, high-contrast images of the moon and several bright planets. The GoTo system accurately located and tracked objects in its database.
Extended Use & Reliability
After several months of regular use, the Celestron NexStar 90SLT has proven to be a reliable and enjoyable instrument. It accompanies me on most of my outdoor excursions. The compact design makes it easy to transport and set up in various locations.
The durability has been excellent. Despite being subjected to occasional bumps and jostles during transport, the optical tube and mount have held up well. The only noticeable wear is some minor scratching on the tripod legs.
Cleaning the optics is straightforward. I use a lens brush and a microfiber cloth to remove dust and fingerprints. The mount requires minimal maintenance, other than keeping the gears clean and lubricated.
Compared to my previous telescope, a basic reflector, the NexStar 90SLT is a quantum leap in terms of ease of use and performance. It allows me to quickly locate and observe a wide variety of celestial objects. This has vastly improved my understanding of the night sky.
Breaking Down the Features of Celestron NexStar 90SLT Computerized Telescope
Specifications
- Optical Design: 90mm Maksutov-Cassegrain. This design provides excellent image quality and a long focal length in a compact tube.
- Mount Type: Fully computerized Altazimuth mount. The mount automatically slews to and tracks celestial objects.
- Finderscope: StarPointer finderscope. This helps with the initial alignment process.
- Database: Over 4,000 celestial objects. This allows the telescope to automatically locate planets, stars, galaxies, and more.
- Alignment Technology: SkyAlign. This makes alignment easy, even for beginners.
- Software: “The Sky” Astronomy Software. This educational software includes sky maps and information about celestial objects.
- Tripod: Sturdy stainless steel tripod. Provides a stable base for observing.
These specifications are important because they directly impact the telescope’s performance and user experience. The Maksutov-Cassegrain design ensures sharp, high-contrast images, while the computerized mount and SkyAlign technology make it easy to find and track objects. The database of 4,000+ objects provides a wealth of observing opportunities.
Performance & Functionality
The Celestron NexStar 90SLT excels at providing accessible and enjoyable astronomical observations. The GoTo system accurately locates and tracks objects. This feature significantly reduces the time spent searching for objects manually, allowing more time for observation.
The telescope’s strengths lie in its ease of use, portability, and image quality. One potential weakness is the relatively small aperture of 90mm, which limits its ability to resolve faint deep-sky objects.
Overall, the Celestron NexStar 90SLT meets and even exceeds my expectations. It delivers sharp, clear images and makes it easy to explore the night sky.
Design & Ergonomics
The Celestron NexStar 90SLT boasts a compact and well-designed optical tube and mount. It uses quality materials. The setup and takedown is very intuitive.
The telescope is relatively lightweight, making it easy to transport and set up. The computerized hand control is easy to learn and use. I would rate its user-friendliness as high; the learning curve is minimal.
Durability & Maintenance
The Celestron NexStar 90SLT appears to be built to last. It uses durable materials, and the mount seems well-engineered.
Maintenance is minimal. The optical tube requires occasional cleaning, and the mount may need occasional lubrication.
Accessories and Customization Options
The Celestron NexStar 90SLT comes with several useful accessories, including two eyepieces (25mm and 9mm), a StarPointer finderscope, and “The Sky” astronomy software.
There are numerous customization options available. These include different eyepieces for varying magnifications, filters to enhance contrast, and a solar filter for safe solar observing. The telescope is compatible with standard 1.25-inch eyepieces from other brands.
Pros and Cons of Celestron NexStar 90SLT Computerized Telescope
Pros
- Easy to set up and align: SkyAlign technology makes alignment a breeze, even for beginners.
- Computerized GoTo system: Locates and tracks over 4,000 celestial objects automatically.
- Sharp, high-contrast images: The 90mm Maksutov-Cassegrain optics provide excellent image quality.
- Portable and compact: Easy to transport and set up in various locations.
- Includes “The Sky” astronomy software: Provides educational resources and sky maps.
Cons
- Relatively small aperture: Limits its ability to resolve faint deep-sky objects.
- Requires batteries or external power supply: The computerized mount needs power to operate.
Who Should Buy Celestron NexStar 90SLT Computerized Telescope?
The Celestron NexStar 90SLT is perfect for: beginners who are new to astronomy, amateur astronomers looking for a portable and easy-to-use telescope, educators who want to engage students in science, and outdoors enthusiasts who want to explore the night sky while camping or hiking.
Who should skip this product? Experienced astronomers who require a larger aperture for deep-sky observing, or those who prefer manual telescopes.
Must-have accessories or modifications? A good set of additional eyepieces for different magnifications, a light pollution filter for urban observing, and a carrying case for easy transport.
Conclusion on Celestron NexStar 90SLT Computerized Telescope
The Celestron NexStar 90SLT Computerized Telescope is a superb entry-level telescope that delivers a remarkable combination of performance, portability, and ease of use. Its computerized GoTo system makes it simple to locate and track celestial objects. The sharp optics provide excellent views of the moon, planets, and bright deep-sky objects.
The price of $539.95 is justified by the telescope’s features and performance. It offers excellent value for the money.
I wholeheartedly recommend the Celestron NexStar 90SLT to anyone looking to embark on their astronomical journey. Unlock the secrets of the universe and start exploring the night sky today!