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Generate Finder Chart 
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Problem: Nadia has a file of sources and wishes to generate finder charts.
The program has to read parameters and pass specific values to the finder
chart generation program. It then should do a batch generation.

The form is 
$ python mfc.py ra dec source

$ cat Source.dat
%source ID RA DEC
SourceA 1 19.5 -20.5
SourceB 2 200.1 -30.3


	#sed: delete comment line
	#sed: you can also delete blank lines (if any)
	#awk: print the intended command line
        #the python program wants column 3, 4 and 1
$ sed '/^%/d;/^ *$/d' | awk '{print "python mfc.py", $3, $4, $1}'
python mfc.py 19.5 -20.5 SourceA
python mfc.py 200.1 -30.3 SourceB

	#now execute it with trace on
$ sed '/^%/d;/^ *$/d' | awk '{print "python mfc.py", $3, $4, $5}' | sh -x