About Eise.app
Image stacker for planets, the Moon & the Sun
Eise.app is a (the first!) browser-based planetary image stacking tool for astrophotography, using lucky imaging. All algorithms run in your browser, and nothing is uploaded.
The name is an ode to Eise Eisinga, a Frisian (NL) amateur astronomer who built a planetarium in his living room. The project started from frustrations getting existing software running on ARM-based Macs - AutoStakkert4! didn't work in Wine, PSS had dependency issues, Lynkeos crashed continuously.
The stacking pipeline includes automatic frame ranking, per-frame cropping and centering, local alignment with de-warping, drizzle upscaling, and quality-weighted frame accumulation. Another cool feature is Continuous Stacking and with the a built-in post processor it has become more easy to find the best optimal stack percentage. Tips on using Eise.app, compare it to other stacking software.
You can also use the post-processor directly on any image.
Curious what people are making with Eise? Browse the community gallery. I would love to see yourt stacks, so please show them!
What users say
"Very good app — it helped me massively improve my image of the Moon."
— Santhiago, astrophotographer from Costa Rica
"Very satisfied with the result."
— Alexis, astrophotographer from France
"Happy this is easy to use."
— Astroyouda, astrophotographer from Indonesia
Quotes translated to English, collected via the feedback form.
Technology
Built with Nuxt/Vue, using MediaBunny, ffmpeg.js and webGPU.
Browser Requirements
Eise.app uses WebGPU for fast GPU-accelerated processing. See browser requirements for minimum versions.
Alternative software
Eise.app works well for quick astrophotography results without installing anything. For a detailed comparison with AutoStakkert!, Planetary System Stacker, Registax, and other tools, see the stacking software comparison.
I also made some other comparisons (mainly to boost Eise's SEO position): AutoStakkert! vs Eise.app, Registax 6 vs Eise.app, PSS vs Eise.app.
Acknowledgments
This project draws inspiration from Planetary System Stacker by Rolf Hempel. Thank you Rolf for making PSS open source and documenting the algorithms.
Community & feedback
Eise's gallery, show me and the world what you stacked
Eise has a gallery with stacks from other astrophotographers. You can publish your stacks from the post processor after stacking and post processing, or you can upload an Eise stack you've already saved on the gallery page itself.
Sharing outside Eise.app
If you're happy with your stack, you can also tell the world! For example:
- Post on r/astrophotography and mention Eise.app :-)
- Post to Instagram or X with #eiseapp.
Bugs and feature requests
For any bug or feature request, let me know! It could be I need your data, but we'll figure that out.
Support the project
Eise.app is free, open source, and I build it in my spare time. If you like Eise, then feel free to buy me a coffee!
Happy stacking,
Tijmen