Making Earth an Observatory.

Build one. Connect many. Observe together.
An affordable radio telescope. A vision for a global community exploring the same sky.

Explore ASTRA 100 Discover ASTRA WORLD

1 metreDish diameter

S$300.71Reported prototype cost

OpenHardware vision

One prototype today. A shared observatory in the making.

The assembled ASTRA azimuth-elevation rotator on a workshop table — 01 / Designed in the workshop

ASTRA telescope with its builders during the night field test — 02 / Built for the real world

Eight modular sections and supporting ribs on the back of the ASTRA dish — 03 / Made to be improved

Two parts. One purpose.

A telescope is just the beginning.

Start with the instrument. See how a community of builders could take it further.

01 / THE VISION

ASTRA WORLD

An open ecosystem for telescope designs, shared knowledge, and a future network of independent observers.

ASTRA telescope under the night sky during the field test

Explore the world of ASTRA

02 / THE INSTRUMENT

ASTRA 100

A one-metre radio telescope built from modular printed parts, accessible electronics, and hands-on experimentation.

Meet the telescope

From the field notebook

Real hardware.
Real lessons.

ASTRA began with a simple question: how can students build and learn with a radio telescope of their own?

The first field test at East Coast Park brought the prototype out of the workshop. It also revealed the next engineering challenges, from mechanical rigidity to receiver calibration.

Read the test results

Assembling ASTRA telescope components on the ground at the field test — Field assembly, East Coast Park · 2–3 August
Photograph from the ASTRA written report.

A closer look

Built by hand. Shared in detail.

Explore the full build ↗

Printed dish segment before applying reflective tape — **One segment at a time**The reflector starts with eight printed sections.

The completed green pyramidal feedhorn — **A closer look at the feed**Built to receive the signal focused by the dish.

Close-up of printed tripod connectors and the mount — **The mount takes shape**Printed components meet aluminium profiles.

Makerbase controller and driver board — **Inside the control system**One board connects the computer to the motors.

Rear support ribs of the telescope dish — **Structure behind the surface**The details that hold the instrument together.

A builder assembling the ASTRA telescope outdoors at night — **Out of the workshop**The prototype during its first field test.

Open science starts with participation

The same sky belongs to everyone.

We’re working on reliable signal reception and planning a community forum, telescope connections, and future interferometry experiments.

See what’s next for ASTRA

Explore ASTRA WORLD Pricing & future services