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Convert HIERARCH ESO keywords to regular FITS keywords, for use with other packages like IRAF.
hierarch28 modifies a FITS file according to an ASCII conversion table to search and replace FITS keywords. The main use is to replace the infamous HIERARCH ESO to make the FITS file understandable by data processing software packages. Because it is overwriting the file header directly, new keywords shall not be longer than the ones they replace.
Notice that hierarch28 will work both in the main header and in extension headers.
Using hierarch28 with the -g option will generate a default conversion table. Following are the keywords that are modified according to this table:
UTC = UT LST = ST RA = RA DEC = DEC HIERARCH ESO TEL AIRM START = AIRMASS HIERARCH ESO DPR TYPE = IMAGETYP HIERARCH ESO INS FILT1 NAME = FILTER1 HIERARCH ESO INS FILT2 NAME = FILTER2 HIERARCH ESO INS FILT3 NAME = FILTER3 HIERARCH ESO INS FILT4 NAME = FILTER4 HIERARCH ESO INS SLIT2 NAME = SLIT HIERARCH ESO INS GRIS1 NAME = GRISM HIERARCH ESO INS GRAT NAME = GRAT HIERARCH ESO INS GRAT1 NAME = GRAT1 HIERARCH ESO INS GRAT2 NAME = GRAT2 HIERARCH ESO INS GRAT WLEN = WLEN HIERARCH ESO INS GRAT1 WLEN = WLEN1 HIERARCH ESO INS GRAT2 WLEN = WLEN2 HIERARCH ESO INS GRAT ORDER = ORDER
Notice that the first 4 keywords are not only converted in name (UTC become UT, LST becomes ST), but also in value to fit the IRAF convention. See the documentation in the default table generated by hierarch28 for more information.