The powerful 'Auto' function quickly and autonomously isolates features of interest such as stars, noise, hot or dead pixels, etc.
For example, isolating just the stars in an image is a necessity for obtaining any useful results from the 'Decon' and 'Magic' module.
The type of features to be isolated are controlled by the 'Selection Mode' parameter
Some of the selection algorithms are controlled by additional parameters;
Finally, the 'Source' parameter selects the source data the Auto mask generator should use. Thanks to StarTools' Tracking functionality which gives every module the capability to go "back in time", the Auto mask generator can use either the original 'Linear' data (perfect for getting at the brightest star cores), the data as you see it right now ('Stretched'), or the data as you see now but taking into account noise propagation ('Stretched (Tracked)'). The latter greatly helps reduce false positives caused by noise.
Most modules come with presets that quickly dial in useful parameter settings.
The generated masks tend to catch all major stars with very few false positives.
The two aspects - colour and luminance - of your image are neatly separated thanks to StarTools' signal evolution Tracking engine.
The latter settled SNR-measurements can than be taken into account by the Regularization algorithm to yield the most appropriate results for your image.
You can convert everything you see to a format you find convenient. Give it a try!