Debayer 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

Process Tab

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

The ALS processing settings are presented in the Preferences page Process tab

Overview

This tab contains only one section: Preprocess

It gathers the settings for all calibration tasks:

Preferences page Process tab

Preprocess

Thu, 11 Jun 2026 00:33:38 +0000

Overview

The Preprocess pipeline handles calibration processes

Configuration

The Preprocess pipeline itself requires no configuration.

The configuration of the calibration processes is managed by the processes themselves. See the Behavior section below.

Control

The Preprocess module is launched in the background at ALS startup

Source	Type	Response
sub(s) in queue	Event	trigger calibration

Input

Data	Type
sub at queue front	Image

Behavior

Performs calibration processes on the sub:

Output

Calibrated sub is broadcast

Debayering

Thu, 11 Jun 2026 00:33:38 +0000

Overview

The Debayer process is used on color images in FITS or Raw format.

It generates a color image from the raw image and the description of the Bayer pattern installed on the sensor that generated the image.

Its configuration is managed via ALS preferences page.

Configuration

	Source	Data Type	Required	Default Value
Bayer pattern	Preferences: Processing Tab	choice: - AUTO - GRBG - RGGB - GBRG - BGGR	YES	AUTO

Control

This process is triggered by the Preprocess module.

Concepts

Thu, 11 Jun 2026 00:33:38 +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

Process Tab

Thu, 11 Jun 2026 00:33:38 +0000

The ALS processing settings are presented in the Preferences page Process tab

Overview

This tab contains only one section: Preprocess

It gathers the settings for all calibration tasks:

Preferences page Process tab

Preprocess

Thu, 11 Jun 2026 00:33:38 +0000

Overview

The Preprocess pipeline handles calibration processes

Configuration

The Preprocess pipeline itself requires no configuration.

The configuration of the calibration processes is managed by the processes themselves. See the Behavior section below.

Control

The Preprocess module is launched in the background at ALS startup

Source	Type	Response
sub(s) in queue	Event	trigger calibration

Input

Data	Type
sub at queue front	Image

Behavior

Performs calibration processes on the sub:

Output

Calibrated sub is broadcast

Debayering

Thu, 11 Jun 2026 00:33:38 +0000

Overview

The Debayer process is used on color images in FITS or Raw format.

It generates a color image from the raw image and the description of the Bayer pattern installed on the sensor that generated the image.

Its configuration is managed via ALS preferences page.

Configuration

	Source	Data Type	Required	Default Value
Bayer pattern	Preferences: Processing Tab	choice: - AUTO - GRBG - RGGB - GBRG - BGGR	YES	AUTO

Control

This process is triggered by the Preprocess module.

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

Process Tab

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

The ALS processing settings are presented in the Preferences page Process tab

Overview

This tab contains only one section: Preprocess

It gathers the settings for all calibration tasks:

Preferences page Process tab

Preprocess

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

Overview

The Preprocess pipeline handles calibration processes

Configuration

The Preprocess pipeline itself requires no configuration.

The configuration of the calibration processes is managed by the processes themselves. See the Behavior section below.

Control

The Preprocess module is launched in the background at ALS startup

Source	Type	Response
sub(s) in queue	Event	trigger calibration

Input

Data	Type
sub at queue front	Image

Behavior

Performs calibration processes on the sub:

Output

Calibrated sub is broadcast

Debayering

Thu, 11 Jun 2026 22:56:10 +0000

Overview

The Debayer process is used on color images in FITS or Raw format.

It generates a color image from the raw image and the description of the Bayer pattern installed on the sensor that generated the image.

Its configuration is managed via ALS preferences page.

Configuration

	Source	Data Type	Required	Default Value
Bayer pattern	Preferences: Processing Tab	choice: - AUTO - GRBG - RGGB - GBRG - BGGR	YES	AUTO

Control

This process is triggered by the Preprocess module.