5 ms·
- "Flash the laser at the same time as the image, scan the laser-illuminated spot, calculate the perturbance, and reverse-filter the image" That's also how som
by perihelions 1y ago
- "Flash the laser at the same time as the image, scan the laser-illuminated spot, calculate the perturbance, and reverse-filter the image"
That's also how some adaptive optics work in astronomy,
https://en.wikipedia.org/wiki/Laser_guide_star https://en.wikipedia.org/wiki/Laser_guide_star
- embwbam 1y agoThe adaptive optics system for the DKIST solar telescope actually deforms each point of the mirror at 60Hz or something to do wavefront correction!
- pfdietz 1y agoBig telescopes have to actively deform the primary mirror anyway, just to keep it in proper shape as it moves around under gravity loads.