Revision as of 10:52, 7 June 2018 by Lock42 (talk | contribs)
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Siril 0.9.9

Release date: June 7th, 2018.

This release is the ninth stability release for the 0.9 branch. Its SVN revision is XXX. It also has an SVN tag: 0.9.9. Stability updates and minor improvements occur in the dedicated 0.9 branch. This is the second version officially supported on Windows, and it even includes developments that were specially made for Windows. But please keep in mind that Siril is developed without Windows and that we rely on Windows users to test and give us feedback about integration or porting problems.

This update focuses on automating the processing steps of a complete acquisition by introducing scripts, allowing for the first time Siril to be run in console and improving speed of registration and many other operations.

Leveraging the new scripting, Siril 0.9.9 has been integrated as an automatic way of processing acquisitions in the capture software CCDciel.



  • 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 complicated task 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 named siril.exe.


What's new in Siril 0.9.9

As usual you can see the list of features and issues and details on the changelog page. This release contains some new features as well as some bug fixes:

  • Major update of the command line, with completion and documentation in the GUI, enhanced scripting capability by running commands from a file and also allowing it to be run with no X11 server running with the -s command line option
  • Added commands to stack and register a sequence
  • Image statistics, including auto-stretch parameters and stacking normalization, are now cached in the seq file for better performance
  • Global star registration now runs in parallel
  • Workflow improvement by adding demosaicing as last part of the preprocessing
  • Added a filtering method for stacking based on star roundness
  • Added an option to normalize stacked images to 16-bit with average rejection algorithm
  • All GUI save functions are now done in another thread
  • Improved histogram transformation GUI
  • Improved support of various FITS pixel formats
  • Preserve known FITS keywords in the stacked image by average method
  • Added native open and save dialogues for Windows users
  • Various Windows bug fixes in SER handling
  • Fixed wrong handling of scale variations in Drizzle case
  • Fixed 8-bit images auto-stretch display
  • Fixed BMP support
  • Fixed issues in PNG and TIFF 8-bit export
  • Fixed the "About" OS X menu