Compute properties associated with the moon properties at the time the input FITS image was taken and install in FITS header.

  
% skymoon --help
Usage: skymoon 20180206T022042.6_acm_sci_proc.fits Y N 
arg1 - Name of LOCAL FITS image to be checked 
arg2 - install cards into header? (Y/N)
arg3 - run in debug mode? (Y/N)