PixInsight 
Linear Image Quality Enhancements

Step 7: Optional: Enhancing the DSO (Cloud) Image

 

updated: 2025-10-28


Purpose

In this step, the image containing the DSO object is stretched and the color saturation and contrast are improved.

  1. Apply a Histogram Stretch process on the image for more contrast. The result is a stretched image.
  2. Apply a Curves Transformation process on the image to enhance the colors

PixInsight Release:

newer than version 1.8.9-2 / build 1604

Input

The DSO image from the previous step

Output

A strechted and color enhanced DSO image

Previous Step

Step 6: Separating Stars and DSO Objects

Next Steps

Step 8: Enhancing the Stars Image


Step

Before the enhancement

After the enhancement

1

Histogram Stretch


“*_CLOUD” into sub folder "Work"

with Autozero shadows and
Autozero highlights
“*_CLOUD_HT” into sub folder "Work"

2

Curves Transformation

“*_CLOUD_HT” into sub folder "Work"


“*_CLOUD_HT_CT” into sub folder "Work"

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