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Open Galileo

opengalileostacker.blogspot.com

Free plan Windows
Visit opengalileostacker.blogspot.com
Spec score 7.5 #17 of 24 in Focus Stacking Software

What it is

Open Galileo is free, open-source Windows software for focus stacking and signal integration in scientific photography, microscopy, macro photography, astrophotography, and technical documentation. It automatically aligns image sets with correlation algorithms, compensating for focus breathing and small shot differences. Focus fusion options include PMax multiband, weighted average, and depth-map methods. Astronomy mode combines signals using mean, median, sum, or sigma-clipping integration. Processing uses Laplacian, Difference of Gaussians, and variance focus measures, plus multiscale fusion with Laplacian pyramids. Optional tools provide contrast normalization, CLAHE, Unsharp Mask sharpening, and noise reduction including BM3D and approximate Noise2Void. Folders can be processed and saved automatically. JPG, PNG, TIFF, and RAW files are supported. The interface includes live previews, progress bars, parameter sliders, and a large-screen layout. It is released under CC BY-NC 4.0; commercial use needs the author's prior permission.

Spec sheet

Purpose
Open Galileo combines images for focus stacking and advanced signal integration, aimed at scientific photography, microscopy, macro photography, astrophotography, and technical documentation.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Intended users
The maker names microscopists, laboratories, scientists, students, macro and nature photographers, astrophotographers, educators, and science communicators as intended users.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Support
The maker invites voluntary donations to support the project's maintenance and improvement.Read 8 Oct 2026 · opengalileostacker.blogspot.com
License
The software is released under CC BY-NC 4.0, and commercial use requires the author's prior permission.Read 8 Oct 2026 · github.com
Alignment
It automatically aligns images using correlation algorithms (ECC) and compensates for focus breathing and small shot variations.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Batch processing and formats
It can process folders automatically, save results automatically, and supports JPG, PNG, TIFF, and RAW files.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Developer
The maker names Brandon Antonio Segura Torres as the developer.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Filters
Optional filters include contrast normalization, CLAHE, Unsharp Mask-style sharpening, and several noise-reduction methods.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Focus fusion
It offers multiband PMax, weighted average, and depth-map fusion methods.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Focus stacking
It offers PMax multiband, weighted average, and depth-map fusion methods.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Image alignment
It automatically aligns images using correlation algorithms (ECC) and compensates for focus breathing and small variations between shots.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Image processing
It uses focus measures based on Laplacian, DoG, and variance, and multiscale fusion with Laplacian pyramids.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Interface
The interface provides real-time previews, progress bars, slider controls, and a window optimized for large screens.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Platform
The release offers a desktop executable for Windows.Read 8 Oct 2026 · github.com
Project model
The maker describes the project as open, educational, and collaborative, and says it is free without restrictions.Read 8 Oct 2026 · opengalileostacker.blogspot.com
Signal integration
Astronomy mode integrates images using mean, median, sum, or sigma-clipping.Read 8 Oct 2026 · opengalileostacker.blogspot.com

Plans and prices

Free Free Free without restrictions · commercial use requires prior permission Read 8 Oct 2026 · github.com
Open Galileo Free Free; the maker says it will always be free. Voluntary donations are accepted. No restrictions stated Read 8 Oct 2026 · opengalileostacker.blogspot.com

Every Open Galileo plan and price →

Strong points and limits

Strong points

  • Automatic alignment compensates for focus breathing
  • Three focus-fusion methods are included
  • Astronomy mode offers four integration methods
  • Batch folders and automatic saving supported
  • RAW, JPG, PNG, and TIFF supported

Limits

  • Windows desktop executable only
  • Commercial use requires prior permission
  • No free trial is offered

Who it suits

It suits microscopists, laboratories, scientists, students, photographers, astrophotographers, and science educators needing stacking or signal integration on Windows.

Verdict

Open Galileo combines scientific stacking, astronomy integration, batch handling, and optional image filters in a free Windows application. Its noncommercial license is important for commercial workflows.

Where Specifiction places it

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