Compact, playful, and easy-to-use astronomical instruments

Lumi Picco Smallest
Lumi educational telescope for beginners, observing in the Pyrenees

Lumi

"The astronomical experience, at your fingertips"

« La science est une chose trop importante pour être laissée entre les mains des seuls savants. » — Carl Sagan

Smallest portable telescope in observation configuration

Smallest

Le Télescope de 150mm le plus transportable au monde

"The best telescope is the one you use often!"

Picco 114/450 telescope

Picco

Newtonian 114/450 — 1.5 kg

Seestar equipped with light shield and cap

Accessory Pack for ZWO Seestar S50

5 accessory pack for ZWO Seestar S50

3D printed Bahtinov mask

Bahtinov Mask

Perfect focus, every time

Cheshire operating principle

Cheshire

The precise collimation tool

Lumi Customizable

Your telescope, your name/logo

150/750 Parabolic Mirror for Smallest telescope - Interferometer tested primary and 35mm secondary

150/750 Mirror for Smallest

Industrial optics - Primary tested + 35mm Secondary

Custom 3D printed part

Custom made

Do you need a specific part?

Our partners

Avis clients

★★★★★

5.0 / 5 basé sur 5 avis

A

Alessandra L. ✓

7 juin 2026

★★★★★

Magical! 🌙

A colorful, sturdy telescope with a perfect view of the Moon. My 8-and-a-half-year-old daughter is hooked. We've shared family moments of learning and wonder under the stars. The best gift to dream together. Top quality!

Photo de Alessandra L. 1Photo de Alessandra L. 2
M

Maxime G. ✓

12 mai 2026

★★★★★

A wonderful birthday gift for my daughter… and a little for me too!

A wonderful birthday gift for my daughter — and I'll admit, a little for me too! The assembly is really well thought out and makes it easy to understand how the telescope works. Building it together as a family was a real bonding moment. The images are beautiful and sharp, and the design is genuinely gorgeous. Both educational and elegant, it immediately makes you want to observe the sky. We can't wait to enjoy the next starry nights!

Photo de Maxime G. 1Photo de Maxime G. 2Photo de Maxime G. 3
D

Darry N. ✓

30 mai 2025

★★★★★

100% approved!

As a happy Seestar S50 owner, I ordered the accessories Raphael offers (baffle, dust cover, etc.). All of these accessories fit the Seestar perfectly, without forcing, and hold up really well! An essential addition to this little machine. Raphael has a perfect command of his designs, dimensions, and printing!

J

Jean-Marc C. ✓

28 février 2026

★★★★★

Much smoother and more precise adjustment

I bought these 3 knurled collimation screws for my Orion XX14i Dobsonian. They replace my old steel screws, which were starting to dent the back of my secondary mirror mount. The ones from La 3ème Dimension are nicely rounded, which makes adjustment much smoother, free of jerks, and far more precise. Very satisfied, thank you!

S

Salah M. ✓

16 février 2026

★★★★★

Flawless, serious, and rigorous work

I asked Raphael to design several Bahtinov masks in different sizes for me. The work is flawless, done with great care and rigor. I'm fully satisfied. I won't hesitate to call on his expertise again in the future.

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