CASUTools is a set of command line programs for processing astronomical imaging data. The Cambridge Astronomy Survey Unit (CASU) uses them in its pipeline processing of survey data. The package is still downloaded by research groups around the world, and every version CASU published that is still available is kept on this page.

The package contains these programs:

• object detection and parameterisation: imcore, imcore_list and classify
• image stacking and dribbling: imstack and dribble
• astrometric fitting: wcsfit
• background filtering, to remove large scale structure: nebuliser
• the final mosaic of a list of image extensions: mosaic, grout and ungrout
• removal of pickup noise from VST images: vstpickup

The use of each program is described in the documentation pages listed below. The source files carry the copyright notice of the Cambridge Astronomy Survey Unit.

Installation

The software has been tested on several Linux distributions (32 and 64 bit), on Solaris and on macOS. It needs a C compiler and recent versions of the CFITSIO and WCSLIB libraries. For most systems the build is the usual sequence of configure, make and make install. If CFITSIO and WCSLIB are not in a standard location, give their paths to configure.

tar xzf casutools-1.0.42.tar.gz
cd casutools-1.0.42
./configure --with-cfitsio=/usr/local --with-wcs=/usr/local
make
make install

Without the --prefix option the programs are installed in a bin directory at the top of the distribution tree, and you then need to add that directory to your PATH. The README file in the archive describes the build in more detail. Each download below shows a SHA-256 checksum, which you can compare with the output of sha256sum after downloading.

Support

For questions about the software write to casuhelp@ast.cam.ac.uk.