If you regularly use Local Normalization, these third-party tools simplify the linking process.
When an image exits the stacking process, it is "linear." In this state, the pixel values are directly proportional to the number of photons captured. This is physically accurate but visually abysmal to the human eye—appearing jet-black save for a few faint star cores. More critically, in this linear stage, the background sky glow (light pollution or airglow) dominates the dim signal of nebulae and galaxies. If a photographer applies a simple stretch without linking the channels, the channel with the highest background noise (often the blue or red channel, depending on the sky conditions) will balloon out of control, resulting in a green or magenta cast across the entire image. pixinsight lerar link
This trick ensures a robust “Lerar Link” even when individual subs look empty. If you regularly use Local Normalization, these third-party
The EZ-LN script automates reference frame creation. It runs an ImageIntegration on selected subs and feeds the result directly into WBPP’s LN reference field. This eliminates manual linking errors. The EZ-LN script automates reference frame creation
Cause: Your reference frame has zero-value pixels (bad columns or dead pixels) that your lights don’t have. This breaks the division.
Fix: Apply a slight Pedestal (e.g., +100 ADU) to both your reference and lights before LN. In WBPP, under the “Light” tab, set “Pedestal” to 100 for all lights.