Linux · Graphics & Design
Tenmon
FITS/XISF image viewer, converter, index and search
by Dušan Poizl
Official site: flathub.org
About Tenmon
It is intended primarily for viewing astro photos and images. It supports the following formats:
FITS 8, 16, 32 bit integer and 32, 64 bit float
XISF 8, 16, 32 bit integer and 32, 64 bit float
RAW CR2/CR3, DNG, NEF
JPEG, PNG, BMP, GIF, PBM, PGM, PPM and SVG images
Features of application:
Using same stretch function as PixInsight
OpenGL accelerated drawing
Index and search FITS XISF header data
Quick mark images and then copy/move marked files
Convert FITS <-> XISF
Convert FITS/XISF -> JPEG/PNG
Image statistics mean, media, min, max
Support for WCS
Thumbnails
Convert CFA images to colour - debayer
Color space aware
Histogram
Scripting
Plate solving
How to install Tenmon
- Click Download — the developer's official website opens in a new tab.
- Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
- Prefer the command line? With Flatpak you can install and update it with: flatpak install flathub space.nouspiro.tenmon
- Open Tenmon once it finishes installing.
Frequently asked questions
Is Tenmon free to download?
Yes. The Download button sends you to flathub.org, the developer's official site, where Tenmon is available to download. Flatnic doesn't host or modify any files.
How do I install Tenmon from the command line?
With Flatpak, run: flatpak install flathub space.nouspiro.tenmon. This installs it from the official source and keeps it updated.
Is Tenmon safe?
Tenmon downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.