DeepSkyStacker is a software for astrophotography that allows users to align and stack images to reduce noise and improve image quality.
Best AstroImageJ Alternatives ranked by AI · updated May 2025
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AstroImageJ is a Java based image processing software for astronomy.
Price: Free
Top 6 AstroImageJ alternatives
PixInsight is a powerful and advanced image processing software specifically designed for astrophotography.
Sequator is free Windows software for stacking night-sky photographs and reducing noise in astrophotography images. It aligns stars while preserving or blending...
Pros
- Handles star alignment and foreground masking in a single workflow
- Faster and simpler to learn than PixInsight for nightscape stacking
- Includes light-pollution and noise-reduction tools
Cons
- Windows-only, with no native macOS or Linux version
- Less capable for full deep-sky processing than Siril or PixInsight
- Limited development and documentation compared with larger astrophotography platforms
AstroArt is an astronomy imaging, acquisition, and telescope-control application for amateur astronomers and observatories. It combines camera control, automated sequences, image calibration,...
Pros
- Combines capture, guiding, telescope control, and processing in one application
- Supports extensive camera and observatory hardware control
- Includes scripting, photometry, and specialized astronomy tools
Cons
- Less widely used and documented than PixInsight or Siril
- Windows-focused compared with cross-platform alternatives
- Interface is denser and less approachable than N.I.N.A.
From €149
6
Star Tools
Ivo Jager
StarTools is dedicated astrophotography image-processing software for amateur astronomers working with deep-sky and planetary images. Its standout capability is a workflow designed...
Pros
- Specialized tools for stretching, denoising, star control, and astrophotography contrast
- Nonlinear processing workflow helps reduce destructive editing mistakes
- Lower upfront cost than PixInsight
Cons
- Smaller user community and tutorial library than PixInsight or Photoshop
- Interface and workflow are less familiar than mainstream photo editors
- Less capable for general-purpose graphic design than Photoshop or Affinity Photo
One-time $60
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