Ditheri - N0len07

It should be the very last step in your mastering chain.

For telescope imaging, dithering involves making tiny, random shifts in the telescope's position between exposures. Calculate & Setup Dithering In PHD2 & NINA N0len07 Ditheri

In audio, dithering is the process of adding a minute amount of random noise to a signal to mask "quantization distortion". This is essential whenever you reduce the of a file (e.g., from 32-bit to 16-bit for CD or streaming). It should be the very last step in your mastering chain