How to open .FITS files on Linux
To open .FITS files on Linux, open the .fits file from your file manager with open with..
Step-by-step instructions
- Open the .FITS file from your file manager with Open With.
- Choose an installed Linux app that supports this format.
Recommended software
- Default Photos app
- Browser preview
- GIMP
Alternative methods
- Open .FITS in a browser-based viewer if desktop apps fail.
- Try opening .FITS on Linux with a secondary app to rule out app-specific issues.
- Convert .FITS only with trusted tools when direct opening is not possible.
Common issues
.FITS file does not open
This usually means the required app is missing or the .FITS file is incomplete.
- Install or update a compatible application.
- Verify the file came from a trusted source and was fully downloaded.
- Try opening the file in an alternative app on another platform.
Security note
Only open .FITS files from trusted senders.