Upon first opening an image, use an Unlinked STF to see through the color cast and gradients.
PixInsight applies the same mathematical stretch to all three color channels (Red, Green, and Blue) based on the image's overall statistics. pixinsight lerar link
Standard processing in PixInsight follows a specific path regarding the STF link: Upon first opening an image, use an Unlinked
Raw astronomical data often has a heavy color bias, frequently appearing green due to the Bayer pattern of color cameras or atmospheric conditions. Upon first opening an image
PixInsight calculates a separate, independent stretch for each channel. This effectively "neutralizes" the background by aligning the histograms of the individual colors. Why Linear Images Need "Unlinking" Initially