A long thread started by "the Elf" at Cloudy Nights, that includes datasets from the Elf himself and other CN users. StarTools processing notes can be found here as well.
Current image processing routines and filters are still as 'dumb' as they were in the early 90s.
The latter module can be "overdriven" to trade increased detail for increased (though perceptually equalised) fine grain noise "artifacts".
The Color module is very powerful - offering capabilities surpassing most other software - yet it is simple to use.
The two aspects - colour and luminance - of your image are neatly separated thanks to StarTools' signal evolution Tracking engine.
You can convert everything you see to a format you find convenient. Give it a try!