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Siril 0.9.8

Release date: January 31st, 2017.

This release is the eighth stability release for the 0.9 branch. Its SVN revision is 2077. It also has an SVN tag: 0.9.8. Stability updates and minor improvements occur in the dedicated 0.9 branch. This is the first version officially supported on Windows, and it even includes developments that were specially made for Windows. But please keep in mind that Siril is not developed with Windows and that we rely on Windows users to test and give us feedback about integration or porting problems.

This update focuses on deep-sky lucky imaging processing speed: operations

Note that starting with this version, OpenCV is a mandatory dependency.



  • Debian stable (stretch): 64 bits
  • Debian testing: 64 bits
  • Ubuntu / Linux Mint:
 sudo add-apt-repository ppa:lock042/siril
 sudo apt-get update
 sudo apt-get install siril
  • Fedora, Mageia 6: All
  • Arch Linux: All.

OSX ( > 10.9)

  • Download. Please use Finder to unzip and if necessary, drag the app to your application folder.

Windows (64bit)

We did not create an installer for it because it's a bit complicated on Windows, we only distribute the archive. We recommend you create a shortcut for the executable at any convenient place. The executable is in the subdirectory bin and is called siril.exe.


What's new in Siril 0.9.8

Siril 0.9.8 is mostly a stability and speed improvement release. It contains in particular some bug fixes for Windows over to the previous version, 0.9.7 but also adds new features:

  • Subpixel alignment for stacking, or more exactly half-pixel alignment, with the feature called simplified drizzle
  • Lucy-Richardson deconvolution
  • Sum stacking now runs in parallel
  • Added the savepng command
  • Added some options to the stackall command
  • Accelerated the autostrech display

Noteworthy bug fixes:

  • Gnuplot can be used on Windows to generate variable star or exoplanet curves
  • Siril-created SER files could have out of order timestamped images, this is now fixed
  • Allowing large SER files (> 4G) to be stacked
  • Image sorting using FWHM in the image list has been fixed