The Origin of the Project

La 3ème Dimension was born from an observation: portable telescopes on the market often make frustrating compromises between size and optical quality. I wanted to design an instrument that fits in a backpack, assembles in minutes, and delivers real performance.

That's how the Smallest was born, a 150/750 Newtonian telescope fully 3D printable. The project has accumulated over 23,000 views on Printables and brings together an active community of builders.

For uncompromising quality, I offer an assembled and optimized version: removable carbon tubes for even more compact storage, removable counterweights for perfect balance according to your eyepieces, all tested and guaranteed for 2 years.

My background combines woodworking, industrial design and, since 2016, communication and design. This dual technical and visual expertise guides my approach to design: functional, robust, and refined objects.

— Raphaël

What our customers say

★★★★★

"Happy owner of a Seestar S50, I ordered the accessories that Raphael offers (baffle, dust cover, etc.). All these accessories attach perfectly to the Seestar, without forcing, and hold really well! An essential addition to this little machine. Raphael perfectly masters his designs, the dimensions, and his printing! 100% approved!!"

Darry.N

Seestar S50 Accessories - 05/30/2025

★★★★★

"I bought these 3 collimation knobs for my Orion XX14i Dobsonian. They replace my old steel screws which, although sold for this purpose, did not have rounded ends and ended up punching the back of my secondary mirror support. The ones from La 3ème dimension are nicely rounded, which makes the adjustment much smoother, without jerks and much more precise. Very satisfied, thank you!"

Jean-Marc C.

Collimation knobs - 02/28/2026

★★★★★

"I asked Raphael to design several Bahtinov masks in different sizes for me. The work done is impeccable, and done with seriousness and rigor. I am fully satisfied. I will not hesitate, in the future, to call on his expertise."

Salah M.

4 Bahtinov masks - 02/16/2026