High-performance imaging software

Open Source · Free to Use

Astrophotography Mosaic Software for Solar, Lunar & Milky Way Imaging

Build precise solar, lunar, milky way, nightscape and landscape mosaics with a desktop workflow designed for high-resolution panel alignment, fast processing, and open-source flexibility.

Weave the heavens and the earth, frame by frame.

Latest release
v0.5.00
Desktop stack
Python + PySide
Core license
MIT
Stylized preview of a stitched solar mosaic

Features

Built for demanding image composite creation

Solar and lunar mosaics

Subject-aware workflows tailored for solar surface detail, H-alpha imaging, and lunar panel capture.

Feature-based alignment

Robust panel matching uses image features to align overlapping captures with precision.

High-resolution stitching

Assemble expansive mosaics while preserving fine structures across large stitched canvases.

Fast processing

Optimized matching and blending paths reduce turnaround time for large panel sets.

PySide desktop app

A modern desktop GUI provides an approachable workflow for interactive review and export.

Open-source core engine

The reusable core is MIT-licensed, making automation and direct integration straightforward.

Showcase

See the stitching pipeline in action

Large stylized solar mosaic preview representing the stitched output
Stitching solar hydrogen-alpha mosaic in CieloStitch

System requirements

Minimum:

  • OS: Windows 10 or Windows 11 (64-bit)
  • CPU: Dual core Intel or AMD processor
  • Memory: 8 GB RAM
  • Display: 1024x768

Recommended:

  • OS: Windows 10 or Windows 11 (64-bit)
  • CPU: Modern 4-core Intel or AMD processor
  • Memory: 16 GB+ recommended
  • Display: 1920x1080 or higher for comfortable panel review
  • Storage: Large mosaics benefit from fast SSD storage.

Architecture

Two layers, one focused imaging workflow

CieloStitch Core

MIT open-source engine

The reusable stitching core powers feature detection, matching, warping, blending, and export workflows for scientific mosaics.

Explore the core repository

CieloStitch App

Desktop GUI for capture-to-output workflows

The application layers a PySide desktop experience on top of the core engine for interactive configuration, previews, and release packaging.

See the current desktop release

Latest build

Get the latest Windows build

Currently available on Windows platform only.

Archive

Release archive and Demo data

Read release notes and download demo data directly from GitHub releases.

CieloStitch Releases

All release upto v0.5.00 are available on GitHub. You can also download a set of demo data to get yourself familiar with the process of stitching using CieloStitch.

Releases Demo data