Pyramid vs Shack-Hartmann: the gain in sensitivity

The Pyramid WaveFront Sensor exhibits a larger sensitivity than the Shack-Hartmann one. Here we show the effect on the lowest order mode, the tip-tilt...
Animations produced with Blender. Thanks are due to Mike Pan.

[@paaritoshjain2721]

I like how they used an Arabic theme for the pyramid wfs.

[@orsogigiocco]

Veramente stupendo. Complimenti

[@naturaldarknessandrational2887]

Yes, but you have N² measurements in the SH, and only 1 on the Pyramid... so provided there are a lot of photons, isn't it equivalent?