3 ms·

Apparently with a gimbal and some fast-moving mirrors. https://www.ll.mit.edu/news/lincoln-laboratory-laser-communications-terminal-launches-historic-artemis-i

• beloch 7mo ago
  It also helps that laser beams diverge. By the time it gets back to Earth, the diameter of the beam from Artemis is probably several hundred meters, if not several kilometres. Their aim still needs to be fairly precise, but they're not trying to hit a lens with a beam that's still the width of a pencil. They really just need to paint the neighbourhood that NASA's sensors are located in.
  • groby_b 7mo ago
    6 km ([slide show](https://ntrs.nasa.gov/api/citations/20250009875/downloads/Optical%20Comm%20for%20Artemis%20II%20Crewed%20Mission.pdf?attachment=true https://ntrs.nasa.gov/api/citations/20250009875/downloads/Op...) with data points and the worst slides government agencies were able to create)