Given an input IFUSLOT value, output the X,Y in arcseconds in the IHMP system. For SCO's IHMP visualization tools, it is also useful to know the X,Y in the IHMP system for a given IFUSLOT number. We use the ifuslot script for that (which actaully just calls the vir_ifu_pat.sh routine in a special way). Here are sample calls:

% ifuslot 115
  -550.00     -50.00

% ifuslot boot_head 
-99999.00  -99999.00