Because raw data is "linear," it looks nearly black to the human eye.

is not merely a technical requirement; it is an artistic bridge that ensures scientific integrity remains intact during the creative process.

: Useful for ensuring all frames align and match statistically before the heavy processing begins. PixInsight 2. Linear Stage Processing

Do not ignore this tool. Inside Process > LRGBCombination , there is a checkbox called . This applies an internal linear link using the Luminance as the reference. It is the easiest way to create a link.