Star Trail Stacker icon
Star Trail Stacker icon

Star Trail Stacker

Star Trail Stacker is a browser-based astrophotography workspace that turns exposure sequences into star trails, fixed-ground nightscapes, deep-sky images, comet composites, planetary stacks and calibration masters.

Star Trail Stacker home page with a real 380-frame Sony A7C star-trail image.

Cost / License

  • Freemium (Subscription)
  • Proprietary

Platforms

  • Online
Finished star-trail stack from the built-in 12-frame synthetic sample session.
Demo gallery showing the supported stacking modes and sample sessions.
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Features

  1.  Image stacking

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Star Trail Stacker information

Star Trail Stacker was added to AlternativeTo by Vitali Bibikov on and this page was last updated .

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What is Star Trail Stacker?

Star Trail Stacker is a browser-based astrophotography workspace that turns exposure sequences into star trails, fixed-ground nightscapes, deep-sky images, comet composites, planetary stacks and calibration masters. Frames are processed on your own device rather than uploaded to a server. The star-trail mode offers background-equalised blending, gap filling and optional aircraft or satellite removal; other modes provide their own controls and export formats, including 16-bit images and FITS where supported. It works in modern browsers on Mac, Windows and Linux, with sample sessions and sky-planning tools. Stacking works without signing in; an optional Google account saves reusable Studio settings across browsers. Every mode and export is open during the beta. The proposed plans after beta are Free and Pro Beta at $5.99 per month or $39 per year. Pro is not yet available to buy; choosing a plan only records interest, and no card or charge is required. Large RAW sessions depend on your device memory.