The Galileoscope isn't just a telescope — it's a telescope you build yourself, then actually use to see what Galileo saw. This 50mm refractor STEM kit snaps together in minutes without tools or glue, and the moment you finish, you can point it at the Moon's craters or Jupiter's moons and understand exactly what you're looking at and why it works.
Unlike plastic toy telescopes that vaguely gesture at science, the Galileoscope is a genuine optical instrument used in over 110 countries and distributed in classrooms worldwide. The 50mm achromatic lens and 500mm focal length (f/10) deliver sharp, real astronomical views. The included 2× Barlow doubles your magnification from 25× to 50×, and a special 17× Galilean eyepiece replicates the upright (non-inverted) view that Galileo himself experienced — an actual piece of optics history you can recreate in your backyard.
What you'll see
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The Moon — craters, mountains, and the terminator line in good detail at 25× and 50×
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Saturn's rings — clearly visible at 50× with the Barlow attached
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Jupiter's four Galilean moons — exactly what Galileo discovered in 1610, visible from your backyard
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Open star clusters and bright double stars — beautiful at both magnifications
What's in the box
- Galileoscope telescope body (all parts for tool-free, no-glue assembly)
- 25× Plössl-style eyepiece
- 2× Barlow / 17× Galilean eyepiece (doubles magnification to 50×, or provides upright 17× Galilean view)
- Tabletop tripod base
- Red-dot finder
- Star map
- Assembly instructions
| Specifications |
|---|
| Optical design |
Achromatic refractor |
| Aperture |
50 mm (2 inches) |
| Focal length |
500 mm (f/10) |
| Magnification |
25× standard; 50× with 2× Barlow; 17× Galilean mode |
| Field of view |
1.5° at 25×; 0.75° at 50× |
| Eyepiece barrel |
1.25\" standard |
| Assembly |
Tool-free, no glue — assembles in minutes |
| Mount |
Tabletop base; standard ¼"-20 camera tripod thread |
Backed by Telescope Wolves' price match guarantee and free US shipping. Not sure if this is the right telescope for you? Our team is happy to help — contact us anytime.
Frequently asked questions
How long does assembly take?
Most people finish in 5–15 minutes. The parts snap and thread together without tools, and the instructions are clear and beginner-friendly. It's designed for classroom use, so it's intentionally straightforward. The build is part of the learning experience, not a barrier to it.
What is the 17× Galilean eyepiece?
This special eyepiece replicates the optical design Galileo actually used — a concave lens that produces an upright, non-inverted image at 17×. Looking through it is genuinely the closest experience you can have to what Galileo saw through his 1610 telescope. The 2× Barlow that comes with it also works as a standard Barlow to double the 25× eyepiece magnification to 50×.
Do I need a tripod?
The kit includes a tabletop base so you can use it on any flat surface. For extended observing sessions, mounting it on a standard camera tripod (sold separately) is much more comfortable, especially for kids. The scope uses a ¼"-20 thread that fits any standard camera tripod.
Can I add different eyepieces?
Yes — the Galileoscope accepts standard 1.25\" eyepieces. Adding a quality 20mm or 10mm Plössl is a worthwhile upgrade once you're comfortable with the kit's included eyepieces.
New to astronomy? Read our beginner's guide to choosing your first telescope or our Astronomy 101 guide to get started.
Watch it in action
