3 Best Telescopes for Teenagers: Manual, App-Guided and GoTo Picks
The right telescope for a teenager depends less on magnification than on how they’ll actually find things in the sky. Some teens enjoy learning the constellations and aiming by hand; others will lose interest if the first few nights end in frustration. The three Celestron telescopes below cover three different paths: aim it yourself, let a phone app guide you, or let a computerized mount do the pointing.
We chose these from Celestron’s own product pages and safety guidance, not hands-on testing. Specifications and requirements are Celestron’s; the notes on fit are our judgment. Celestron doesn’t publish an age rating on these product pages, so “for teenagers” is our editorial suggestion, not the maker’s. Prices and stock change, so check with the seller before you buy. STEMGeek may earn a commission if you buy through some links on this page.
The three picks at a glance
| Pick | Design and aperture | How it finds objects | What else you need |
|---|---|---|---|
| Celestron AstroMaster 70AZ | 70 mm refractor | You aim it on a manual mount | No phone or motor |
| Celestron StarSense Explorer DX 130AZ | 130 mm Newtonian reflector | Phone app shows where to push it; red-dot finder without the phone | Compatible phone for app guidance (Android 12+ or iOS 18+) |
| Celestron NexStar 130SLT | 130 mm Newtonian reflector | Computerized mount points it for you | 8 AA batteries (not included) or a separately sold 12 V supply |
Our picks
1. Celestron AstroMaster 70AZ
From the maker:
- Celestron item 21061.
- A 70 mm refractor on a manual alt-azimuth mount, which moves up-down and left-right by hand.
Why it’s on the list: It’s the simplest of the three. There’s no app to install and no motorized mount to power, so a teen can carry it outside and start with the Moon, the easiest first target. Refractors use lenses rather than mirrors, and don’t need the mirror alignment that reflectors occasionally do. For a teen who wants to learn the sky by aiming and looking, that simplicity is the point.
Keep in mind: At 70 mm it has the smallest aperture here, so it gathers less light than the two 130 mm reflectors and faint targets will be harder to see. Finding anything beyond the Moon is entirely up to the user; a star chart or planisphere helps. If your teen tends to give up when something is hard to find, the app-guided pick below may be a better start.
See Celestron · Check on Amazon
2. Celestron StarSense Explorer DX 130AZ
From the maker:
- Celestron item 22461.
- A 130 mm Newtonian reflector on a manual alt-azimuth mount, with a smartphone dock and app that guide you to targets.
- Also usable without a phone through the included red-dot finder.
- App compatibility is listed as Android 12 or later, or iOS 18 or later; Celestron notes older devices may have limited support for reinstalling the app.
Why it’s on the list: Most teens already carry the key accessory. The app uses the docked phone to show where to push the telescope, so they still move it by hand and learn where things are, but with a guide instead of guesswork. The 130 mm mirror also gathers far more light than the 70 mm refractor.
Keep in mind: Check the phone before you buy, especially if the telescope will use an older hand-me-down device. Guidance depends on that phone, though the red-dot finder still works without it. Like other Newtonian reflectors, it may occasionally need its mirrors aligned, a process called collimation.
3. Celestron NexStar 130SLT
From the maker:
- Celestron item 31145.
- A 130 mm Newtonian reflector on a computerized, motorized mount with Celestron’s NexStar+ hand control.
- Powered by 8 AA batteries (not included) or a separately sold 12 V power source.
Why it’s on the list: This is the GoTo option: once it’s set up, a teen chooses an object on the hand control and the motorized mount points the telescope there. That suits a teen who is more interested in seeing a long list of objects than in learning to star-hop, and it doesn’t depend on a phone.
Keep in mind: It has the same 130 mm aperture as the StarSense Explorer DX 130AZ, so the choice between them is about how the telescope is pointed, not a bigger view. Expect a setup step at the start of each session before the mount can find objects. Plan for power: eight AA batteries per set, or a 12 V supply bought separately. As a reflector, it may occasionally need collimation.
See Celestron · Check on Amazon
Never point a telescope at the Sun without a front-mounted solar filter
None of these telescopes should be pointed at the Sun unless a suitable solar filter, made to fit that telescope, is securely fitted over the front of the tube. Celestron says a proper solar filter is mandatory every time a telescope is aimed at the Sun and warns that an unfiltered view can cause permanent eye damage. Inspect the filter before each use, don’t use it if it’s damaged, and follow the filter maker’s instructions. Never use an eyepiece solar filter. If your teen wants to observe the Sun, read Celestron’s solar filter guidance first, and have an adult supervise that session.
How to choose
- Wants to learn the sky by hand, or you want the simplest setup: AstroMaster 70AZ.
- Has a compatible phone and wants help without motors: StarSense Explorer DX 130AZ.
- Wants the telescope to find objects for them: NexStar 130SLT, with a plan for batteries or a 12 V supply.
- Think about where it will be used. A telescope that is easy to carry outside gets used more often than a bigger one that stays in a cupboard. Check Celestron’s listing for size and weight.
More STEM gift guides
- Best STEM toys for teens
- Best STEM toys for 12-year-olds
- Best STEM toys for 8-year-olds, including a first microscope for younger siblings
Last update on 2026-10-13 / Affiliate links / Images from Amazon Product Advertising API
