Saturation on Astro Live Stacker

Concepts

Thu, 11 Jun 2026 00:33:39 +0000

Introduction

By the end of this chapter, the basic concepts of ALS will be familiar to you.

You will understand what ALS does and how it does it.

Stacking

Stacking is the process of combining multiple subs of the same target to generate a more detailed and contrasted image than a single sub.

The quality of the result increases as more subs are used.

Comparison of 8 stacking results
The number of stacked subs is indicated at the top left of each image

Processing

Thu, 11 Jun 2026 12:51:43 +0000

Introduction

In this chapter, you will learn how to improve your images using the Processing panel.

Overview

The Processing panel is the control room for the Process module in ALS.

Located on the right side of the interface, this panel organizes image processing controls into several sections:

Histogram
A graphical representation of pixel intensity distribution.
Auto Stretch
Adjust the strength of the automatic stretch.
Levels
Fine-tune overall exposure and adjust black and white clipping.

RGB Balance

Thu, 11 Jun 2026 00:33:39 +0000

Overview

The RGB Balance process adjusts the relative intensity of the three primary colors — red, green, and blue — to correct or refine the overall color tone of a stacked image. It also controls global color saturation, letting you reinforce or tame chroma while keeping exposure unchanged. These parameters allow fine control of image chromatic balance, complementing the Levels and Auto-Stretch processes.

This process is handled by the Process pipeline module.