CFITSIO is a library of C and Fortran subroutines for reading and writing data files in FITS (Flexible Image Transport System) data format.

The CFITSIO library is part of the PU_IAS Linux distribution installed on all SNS Computers. Both the static and shared libraries are located in /usr/lib64 for 64-bit systems and in /usr/lib for 32-bit systems. The header files are located in /usr/include/cfitsio for both architectures.

The homepage for the CFITSIO project is

A Quick-Start Guide is available at