NAME

       siril - image processing tool for astronomy and other applications

SYNOPSIS

       siril [options] [file]
       siril-cli [options] [file]

DESCRIPTION

       Siril is a powerful image processing tool designed for improving the signal-to-noise ratio
       of astronomical images. It offers a wide  range  of  tools  for  aligning,  stacking,  and
       enhancing images from various file formats, including image sequences. It features a high-
       precision 32-bit floating-point engine and supports parallel processing to run quickly.
       The application is divided into 2 binaries. The first one, siril, launches the program  in
       graphic  mode.  The second one, siril-cli, is a command line interface allowing to execute
       the following options.

OPTIONS

       -v, --version
              Prints the program name and version, then exits.

       -i conf_file
              Starts Siril with the specified configuration file.

       -f, --format
              Prints all supported input image formats, depending on the  libraries  detected  at
              compile-time.

       -c, --copyright
              Prints copyright information, then exits.

       -h, --help
              Displays a brief usage summary.

       -p     Starts  Siril  without  the graphical user interface and uses named pipes to accept
              commands and print logs and status information. On POSIX systems, the  named  pipes
              are created in /tmp/siril_commands.in and /tmp/siril_commands.out.

       -r input_pipe_path, --inpipe=input_pipe_path
              Provides an alternative path for the input pipe that receives the commands if -p is
              passed. The pipe can be created by an external program with the mkfifo(1) command.

       -w output_pipe_path, --outpipe=output_pipe_path
              Provides an alternative path for the  output  pipe  that  prints  logs  and  status
              updates  if  -p  is passed. The pipe can be created by an external program with the
              mkfifo(1) command.

       -d working_directory, --directory=working_directory
              Sets the specified path as the current working directory.

       -s script_file, --script=script_file
              Starts Siril without the graphical user interface and  runs  the  specified  script
              instead.  Scripts  are  text  files  that contain a list of commands to be executed
              sequentially. In these files, lines starting with a # are considered  as  comments.
              If this option is not passed, pipe operation is assumed as if -p had been passed.

       -s -   Redirects inputs written after - to stdin.

       file   Opens the specified image or sequence file immediately after startup.

FILES

       ~/.config/siril/config.ini
              User preferences that can be overridden by the -i option.

       /usr/share/siril/siril.css
              The  style  sheet  used to change the look of the graphical user interface. This is
              useful for customization or if a  GTK  theme  is  incompatible  with  some  colored
              elements of Siril.

LINKS

        1. Website with news, tutorials, FAQ, and more
           https://siril.org

        2. Forum for Siril
           https://discuss.pixls.us/siril

        3. Official documentation
           https://siril.readthedocs.io/en

        4. Bug tracker
           https://gitlab.com/free-astro/siril/-/issues

AUTHORS

        Vincent Hourdin <vh at free-astro dot org>
        Cyril Richard <cyril at free-astro dot org>
        Cécile Melis <cissou8 at gmail dot com>
        Adrian Knagg-Baugh <aje dot baugh plus astro at gmail dot com>

COPYRIGHT

       Copyright  ©  2021  Free  Software  Foundation, Inc.  License GPLv3+: GNU GPL version 3 or
       later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO  WARRANTY,
       to the extent permitted by law.