Tracking in StarTools makes sure that every module and algorithm can trace back how a pixel was modified at any point in time. It's the Tracking engine's job to allow modules and algorithms "travel in time" to consult data and even change data (changing the past) and then forward-propagate the changes to the present.
The latter sees the Tracking module re-apply every operation made since that point in time, however with the changed data as a starting point; changing the past for a better future. This is effectively signal processing in three dimensions; X, Y and time (X, Y, t).
Thank you StarTools for turning my average photos into amazing ones.
The way a point light is blurred like this, is also called a Point Spread Function (PSF).
The module can also be used as swiss pocket knife for gamma correction, normalisation and channel luminance contribution remixing.
However the Synth module can physically model and emulate most real optical systems and configurations to obtain a desired result.
Uniquely, thanks to the signal evolution Tracking engine, this color calibration is preferably performed towards the end of your processing workflow.
You can convert everything you see to a format you find convenient. Give it a try!