[Someone]

This is a normal camera, a normal radio that transmits it, and a large radio telescope (once, over half a century ago, the largest in the world, but now amateur operated; https://en.m.wikipedia.org/wiki/Dwingeloo_Radio_Observatory) used as an antenna to receive that broadcast.

I expect the data to be transferred one pixel at a time, but possibly, it’s losslessly compressed.

It’s “Dutch radio amateurs image” because they controlled the camera.

[Uberphallus]

They controlled the camera? I can't find any statement indicating so.

[tqkxzugoaupvwqr]

> The transceiver on board Longjiang-2 was designed to allow radio amateurs to [...] command it to take and downlink images.