Siril Image Processing Application

Siril is a free and open source astronomical image processing software for Linux, macOS and Windows. Using this you can improving the signal to noise ratio and noise reduction of RAW image from multiple captures as required in astronomy. It support BIASES/DARKS/FLATS master files and natively process SER videos. You can also stack and enhance pictures from various file formats, even image sequence files like films and SER. It is released under GNU General Public License v3.0.

Siril

Install Siril on Ubuntu Linux

Siril is available as flatpak and portable AppImage file formats. For the flatpak you need to install the flatpak and flathub on your system. Follow the below installation links for that. If you already have in your system just skip this step.

How to install flatpak

After the flatpak installation restart your system and open the terminal application. And run the Siril flatpak installation command.

flatpak install flathub org.free_astro.siril

You can start Siril via this command.

flatpak run org.free_astro.siril

If you don’t like it then you can uninstall it by

sudo flatpak uninstall org.free_astro.siril

Install Siril via AppImage:

Download Siril

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Download Siril in .AppImage file format from the above link and save it on your Downloads folder. Then open the terminal application and run below commands one by one.

cd Downloads
sudo chmod +x ~ Siril-0.99.10.1-x86_64.AppImage

Here “Siril-0.99.10.1-x86_64.AppImage” is the downloaded file name. Change the commands based on your file name.

./Siril-0.99.10.1-x86_64.AppImage

That’s it.

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