This is the final release of the CFITSIO.pm module, which has been replaced by Astro::FITS::CFITSIO. This version warns the caller that they are using an obsolete package, and aliases symbols in Astro::FITS::CFITSIO to the CFITSIO namespace. As such, it requires Astro::FITS::CFITSIO. Installation is the usual: $ perl Makefile.PL $ make $ make test $ make install