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The PROS software is stored under the IRAF package xray, and is divided into several subpackages (e.g., spectral, spatial, timing, etc.). Once the xray package is loaded all the sub-packages are accessible. To load the PROS software:
cl> xray []----------------------------------------------------[] [] PROS RELEASE VERSION 2.4 [] [] October, 1995 [] [] [] [] Before using this version rerun mkiraf [] [] [] [] For answers mail hotseat [] []----------------------------------------------------[] The following general information is available via the "help" command: help topic: description: pros description of all help options available in pros bugs description of known IRAF/PROS bugs coords description of IRAF coordinates used in PROS exposure description of PROS exposure correction support extensions description of conventions for PROS file extensions explain_errors description of PROS error computations for low count/bin data explain_xdata description of new RDF file formats explain_screen description of PROS support for temporal screening extensions description of conventions for PROS file extensions file_compare comparison of new/RDF formats to OLD formats in PROS filter description of filtering options in PROS missions list of missions and instruments support by PROS prf information on the Point Response Function (or psf) qpoe description of the QPOE data file and user interface * rosat_files description of ROSAT data files which can be input to PROS regions description of PROS region masks release_xray release notes for this build xspec_interface description of how to convert data into XSPEC PHA files xapropos xdemo xinstall xobsolete. xproto. xspectral. xdataio. ximages. xlocal. xplot. xspatial. xtiming. xr>
After the xray package is loaded, the following IRAF logical variables are defined.
IRAF uses $ as a delimiter between logical variables and physical names i.e. xdata$snr.imh addresses the image snr.imh in the directory pointed to by the IRAF variable, xdata.