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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

Output Tab

Thu, 11 Jun 2026 00:20:09 +0000

The settings governing ALS outputs are presented in the Output tab.

Overview

This tab is divided into 2 sections:

The Output tab in preferences

Save

Here are the output file format, output folders, and autosave function settings

Format

ALS saves the main output images in one of the following formats:

TIFF
PNG
JPEG

Main output file format preferences

Save

Wed, 10 Jun 2026 23:25:49 +0000

Overview

The Save module handles the saving on disk of all images generated by ALS.

Its configuration is managed via ALS preferences

Configuration

	Source	Data type	Required	Default value
work folder	Prefs: Output Tab	path to a folder	Yes	∅
web folder	Prefs: Output Tab	path to a folder	Yes	= work folder
file format	Prefs: Output Tab	choices: - TIFF - PNG - JPEG	Yes	JPEG

Control

The Save module is launched in the background at ALS startup

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

Output Tab

Thu, 11 Jun 2026 00:20:09 +0000

The settings governing ALS outputs are presented in the Output tab.

Overview

This tab is divided into 2 sections:

The Output tab in preferences

Save

Here are the output file format, output folders, and autosave function settings.

Format

ALS saves the main output images in one of the following formats:

Save

Wed, 10 Jun 2026 23:25:49 +0000

Overview

The Save module handles the saving on disk of all images generated by ALS.

Its configuration is managed via ALS preferences

Configuration

	Source	Data type	Required	Default value
work folder	Prefs: Output Tab	path to a folder	Yes	∅
web folder	Prefs: Output Tab	path to a folder	Yes	= work folder
file format	Prefs: Output Tab	choices: - TIFF - PNG - JPEG	Yes	JPEG

Control

The Save module is launched in the background at ALS startup

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

Output Tab

Thu, 11 Jun 2026 00:20:09 +0000

The settings governing ALS outputs are presented in the Output tab.

Overview

This tab is divided into 2 sections:

The Output tab in preferences

Save

Here are the output file format, output folders, and autosave function settings.

Format

ALS saves the main output images in one of the following formats:

Save

Wed, 10 Jun 2026 23:25:50 +0000

Overview

The Save module handles the saving on disk of all images generated by ALS.

Its configuration is managed via ALS preferences

Configuration

	Source	Data type	Required	Default value
work folder	Prefs: Output Tab	path to a folder	Yes	∅
web folder	Prefs: Output Tab	path to a folder	Yes	= work folder
file format	Prefs: Output Tab	choices: - TIFF - PNG - JPEG	Yes	JPEG

Control

The Save module is launched in the background at ALS startup