
Dear reader,

at the web page https://rsdb.obs-nancay.fr/#!/documentation I have found
http://rsdb.obs-nancay.fr/public/Doc/raworfees.pro with the IDL routine
raworfees.pro for reading ORFEUS data. I use it in my software.

To run the raworfees.pro you need SSW including the mrdfits.pro which
is located in SSW/gen/idl/fits/mrdfits.pro or also in
SSW/gen/idl_libs/astron/fits/mrdfits.pro .

As the ORFEUS data are not equidistant in frequency I have made a soft
for converting the intensities to the equidistant frequency axis (what
we needed for our purposes). This soft uses a nice procedure
(Intep - an Effective Interpolation Subroutine, Hill, G., Publications
of the Dominion Astrophysical Observatory, Vol. 16, NO. 6, P. 67, 1982,
https://ui.adsabs.harvard.edu/abs/1982PDAO...16...67H/abstract).

In the ZIP file you will find the IDL procedures:

intep_gh_jr.pro - INTEP routine
orfees_fits_to_XDR_and_corrections.pro - nmain code for ORFEUS actions 
                   (reading fits, equdistancing the f-axis, storing the IDL XDR file)
raworfees.pro  - original procedure to read ORFEUS FITS data files
read_orfees_radio_fts_file.pro - my routine for calling raworfees.pro

int_orf20220402_132000_1.fts - original ORFEUS FITS file
int_orf20220402_132000_1.xdr - resulting IDL XDR file

With the best wishes

Jan Rybak (rybak@astro.sk), 2022/10/11
