PROBLEM:   The ESI fits files contain SIMULATED or NO DCS values. 
 	   (E.g., the RA and DEC fields look bogus, and the SIMULATE
	   field is 'T'rue.)
	   Even though you can type 'show -s dcs ra dec' and it
           returns REAL DCS values, the FITS file continues to show
           bogus or NO DCS values (NO values if the dcsSimulator task
	   was killed).
	
REASON:	   The watch_ccd task on koki was probably started up while
	   the DCS was in SIM-mode.  
	   (Check on koki as esi* via 'check_dcs_mode'.) 
           Even if the mode was changed to talk to the REAL DCS
           (via 'make_dcs_real'), the watch_ccd task ONLY remembers 
	   that it was talking to the DCS SIMULATOR and will continue
	   to write out SIMULATED or NO DCS values in the fits headers.
	
 	   Other processes, like FACSUM, may have the same problem if
	   they too were started up while the DCS was still in 
	   simulate mode.	
	 		

SOLUTION:   1- Log into KOKI as esieng.
		* You must be on KOKI, not KANAHA!
		
	    2- Kill all watch_ccd processes by typing (at the "%" prompt):
		  % kill_em watch_ccd
 	
	    3- Make sure you are in REAL DCS mode:
	     	  % make_dcs_real
	
 	    4- Restart watch_ccd task via :
	  	  % esi start watch_ccd
	
	    5- See if you can see REAL DCS keywords:
		  % show -s dcs ra dec instrume simulate
	
	    6- Take an image and verify that DCS keywords are in the
		fits headers.

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PROBLEM:   NO ACS keyword(s) (e.g., PMFM) in ESI fits headers.

SOLUTION:  Add this environment variable to the ~esiN/.cshrc file on KOKI
 	   and resource your .cshrc :
	 
 		   setenv ACS_GATEWAY_HOST kawa
	 
 	(*** NOTE that currently each esi account is separate on kanaha
 	     and koki!  I.e., changing something for an esi acct on kanaha
	     does not change it automatically on koki!)