How can I read the CalFUSE output files into IDL?
CalFUSE output files are in FITS format with the data stored as binary table extensions. The extracted spectral files (*fcal.fit) employ the standard binary table format, listing wavelength, flux, error, etc. for each wavelength bin. The intermediate data files (*idf.fit) have a different format, listing all of the photon arrival times, then the X coordinates, then the Y coordinates. Formally, the table has only one row, and each element is an array. Both file formats can be read using the MDRFITS command from the IDL Astronomy User’s Library. Note that extensions 1 and 3 of the IDF must be read using the /fscale keyword.
