Celestron NexStar 90SLT Mak Computerized Telescope - Smart Smartphone

In this review the Celestron NexStar 90SLT Mak Computerized Telescope is evaluated for hobbyists who want a compact, easy-to-use instrument for planetary and lunar observing with added smartphone imaging. The biggest reason to buy is its blend of a high-quality 90mm Maksutov-Cassegrain optical tube with a computerized NexStar hand control that makes locating targets straightforward, while the included NexYZ 3-axis smartphone adapter lets users quickly capture images through the eyepiece. It is a practical step up for backyard observers who value portability and instant imaging.

Key Features

• 90mm Maksutov-Cassegrain: The compact optical design delivers sharp views of planets and the Moon while remaining travel friendly.
• Computerized NexStar hand control: Provides an object catalog, slew speed control, and visibility info so users can locate targets with a touch of a button.
• Quick-release fork arm mount: The mount and optical tube are designed for rapid setup and secure positioning without lengthy alignment hardware.
• Accessory tray and simple setup: Built-in accessory storage and straightforward assembly let you begin observing quickly.
• NexYZ 3-axis smartphone adapter: Connects most modern phones to the eyepiece so you can capture images and video through the telescope, spotting scopes, binoculars, and microscopes.
• Broad phone compatibility: Works with current Samsung, Google, and Apple models so newer phones are supported for digiscoping.

Who It's For

The NexStar 90SLT is best for beginner to intermediate observers who want a portable telescope that still delivers good planetary detail and casual astrophotography using a smartphone. Its computerized hand control and compact Maksutov tube appeal to users who value quick setup and easy target acquisition without the bulk of larger scopes.

It is less suited for deep-sky astrophotography or users who need very large apertures for faint nebulae and galaxies; those observers should look at larger aperture Dobsonians or equatorial-mounted rigs designed for long-exposure imaging.

Pros & Cons

Pros

• Compact, high-quality 90mm optics provide clear views of planets and lunar features.
• Computerized NexStar hand control makes finding and tracking objects straightforward for beginners.
• NexYZ smartphone adapter broadens utility by enabling quick digiscoping with most modern phones.

Cons

• Some users report occasional issues with alignment stability and vibration, so steady placement and care are needed.
• The 90mm aperture limits deep-sky performance compared with larger telescopes.

Specifications

Optical design	Maksutov-Cassegrain
Aperture	90mm (3.5 in)
Mount type	Quick-release fork arm mount
Go-to control	Ergonomic NexStar hand control with object catalog
Included accessory	NexYZ 3-axis universal smartphone adapter
Phone compatibility	Works with latest Samsung, Google, and Apple models

Our Verdict

The NexStar 90SLT is a strong choice for backyard observers who want a compact, computerized telescope that pairs easily with a smartphone for casual imaging. It offers good planetary and lunar views and simplifies locating objects, making it a good value for hobbyists not yet ready for larger, more complex setups.

Frequently Asked Questions

Can I use my modern smartphone with the included adapter?
Yes. The NexYZ adapter is designed to work with a wide range of current Samsung, Google, and Apple phones for capturing images and video through the eyepiece.

Is this scope good for deep-sky imaging?
Its 90mm aperture and compact design favor planetary and lunar viewing; serious deep-sky imaging is limited compared with larger aperture telescopes.

How easy is setup for beginners?
The quick-release fork arm mount, accessory tray, and NexStar hand control make setup and target acquisition straightforward for beginners, though stable placement reduces vibration.