simg

simg is software for deterministic image processing. It is controlled via the command line (typically using shell scripts), it is fast (all computation-intensive routines are parallelized), and it is scalable to process large data sets. All results on this page were created with this program. This includes the Northern Sky Narrowband Survey, which was computed from tens of thousands of single exposures.

simg is probably unusable without basic knowledge of its algorithms. A proper documentation does not exist yet. Therefore, the program is provided as-is, without any warranty that it will be useful to others.

Dependencies

Dependencies are avoided as much as possible. Besides standard libraries (glibc, pthreads, etc.), the command-line utility (simg) only depends on fftw3. The visualization tool (vsimg) additionally requires GTK+ 2 or higher.

Downloads

The following packages are distributed under the GNU GPLv3 (General Public License version 3). To compile the program from source code, the Free Pascal compiler (version 3.0 or higher) is required, along with the standard units (which include fftw3 and GTK bindings). Additionally, binaries for AMD64/Linux are provided, which should run on any reasonably modern AMD64/Linux installation. Use the ldd command to check whether any required shared libraries need to be installed.

Version	Packages
20250717	Source code Binaries for AMD64/Linux
20220317	Source code Binaries for AMD64/Linux
20210727	Source code Binaries for AMD64/Linux