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Open Galileo
What it is
Open Galileo is free, open-source desktop software for focus stacking and signal integration in scientific photography, microscopy, macro photography, astrophotography, and technical documentation. Its Windows executable aligns images automatically using correlation algorithms and compensates for focus breathing and small variations between shots. Focus-stacking options include PMax multiband, weighted average, and depth-map fusion. Astronomy mode supports mean, median, sum, and sigma-clipping integration. Image processing uses focus measures based on Laplacian, Difference of Gaussians, and variance, with multiscale fusion through Laplacian pyramids. Optional filters include contrast normalization, CLAHE, Unsharp Mask sharpening, and noise reduction methods such as BM3D and approximate Noise2Void. It can process folders and save results automatically, with support for JPG, PNG, TIFF, and RAW images. The interface provides previews during processing, progress bars, parameter sliders, and a window optimized for large screens. The maker describes the project as open, educational, and collaborative. It is free without restrictions, though commercial use requires the author's prior permission; voluntary donations are accepted.
For and against
For
- Automatically aligns images and compensates for focus breathing.
- Offers three focus-stacking methods.
- Astronomy mode includes four signal integration methods.
- Supports JPG, PNG, TIFF, and RAW images.
Against
- The release is a Windows desktop executable.
- Commercial use requires the author's prior permission.
The verdict
Open Galileo combines focus stacking and astronomy signal integration with automatic alignment and folder processing. It is free, but commercial users must obtain the author's prior permission.
Who it suits
Open Galileo may suit microscopists, laboratories, scientists, students, macro and nature photographers, astrophotographers, and science educators. It is for users working with image stacks or signal integration on Windows.
Plans and prices
Free
Free without restrictions · commercial use requires prior permission
Read 8 Oct 2026 · github.com
Open Galileo
No restrictions stated
Read 8 Oct 2026 · opengalileostacker.blogspot.com
On the record
- Alignment
- It automatically aligns images using correlation algorithms (ECC) and compensates for focus breathing and small shot variations.opengalileostacker.blogspot.com · read 8 Oct 2026
- Batch processing and formats
- It can process folders automatically, save results automatically, and supports JPG, PNG, TIFF, and RAW files.opengalileostacker.blogspot.com · read 8 Oct 2026
- Developer
- The maker names Brandon Antonio Segura Torres as the developer.opengalileostacker.blogspot.com · read 8 Oct 2026
- Filters
- Optional filters include contrast normalization, CLAHE, Unsharp Mask-style sharpening, and several noise-reduction methods.opengalileostacker.blogspot.com · read 8 Oct 2026
- Focus fusion
- It offers multiband PMax, weighted average, and depth-map fusion methods.opengalileostacker.blogspot.com · read 8 Oct 2026
- Focus stacking
- It offers PMax multiband, weighted average, and depth-map fusion methods.opengalileostacker.blogspot.com · read 8 Oct 2026
- Image alignment
- It automatically aligns images using correlation algorithms (ECC) and compensates for focus breathing and small variations between shots.opengalileostacker.blogspot.com · read 8 Oct 2026
- Image processing
- It uses focus measures based on Laplacian, DoG, and variance, and multiscale fusion with Laplacian pyramids.opengalileostacker.blogspot.com · read 8 Oct 2026
- Intended users
- The maker names microscopists, laboratories, scientists, students, macro and nature photographers, astrophotographers, educators, and science communicators as intended users.opengalileostacker.blogspot.com · read 8 Oct 2026
- Interface
- The interface provides real-time previews, progress bars, slider controls, and a window optimized for large screens.opengalileostacker.blogspot.com · read 8 Oct 2026
- License
- The software is released under CC BY-NC 4.0, and commercial use requires the author's prior permission.github.com · read 8 Oct 2026
- Platform
- The release offers a desktop executable for Windows.github.com · read 8 Oct 2026
- Project model
- The maker describes the project as open, educational, and collaborative, and says it is free without restrictions.opengalileostacker.blogspot.com · read 8 Oct 2026
- Purpose
- Open Galileo combines images for focus stacking and advanced signal integration, aimed at scientific photography, microscopy, macro photography, astrophotography, and technical documentation.opengalileostacker.blogspot.com · read 8 Oct 2026
- Signal integration
- Astronomy mode integrates images using mean, median, sum, or sigma-clipping.opengalileostacker.blogspot.com · read 8 Oct 2026
- Support
- The maker invites voluntary donations to support the project's maintenance and improvement.opengalileostacker.blogspot.com · read 8 Oct 2026
