Download
NightSeam for Windows
The desktop app for planning deep-sky observing nights — plus an image catalog that keeps your captures organized. Works offline; your data stays on your machine.
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- Everything works offline — planning, maps, catalogs, all of it.
- No installation needed: unzip the download and double-click
NightSeam.exe. - Your data (sites, panoramas, captures) lives in a
datafolder next to the app. - Free and open source.
- Prefer not to install? Run the web version in your browser.
🛡️ Windows may show “Unknown publisher” the first time — that is normal for a self-signed app. Choose More info → Run anyway.
What’s new
The big changes, in plain words.
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