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Last modified: 11 January 2021

URL: https://cxc.cfa.harvard.edu/ciao/bugs/asp_offaxis_corr.html

Bugs: asp_offaxis_corr


Caveats

Deletes the NOM keywords

The asp_offaxis_corr tool removes the RA_NOM, DEC_NOM, and ROLL_NOM keywords from the header of the aspect solution file. These keywords are used by some applications, such as marx.

Workaround:

To work around the problem, users can copy the *PNT keyword values to the *NOM values. For example:

bash$ for key in RA DEC ROLL
do
  val=`dmkeypar pcad.fits ${key}_PNT echo+
  dmhedit pcad.fits file= op=add key=${key}_NOM value=$val 
done

# - or - 

tcsh% foreach key (RA DEC ROLL)
  set val=`dmkeypar pcad.fits ${key}_PNT echo+
  dmhedit pcad.fits file= op=add key=${key}_NOM value=$val 
end