  Copyright (c) 2003-2011 Massachusetts Institute of Technology

  This software was developed by the MIT Center for Space Research
  under contract SV1-61010 from the Smithsonian Institution.
  
  Permission to use, copy, modify, distribute, and sell this software
  and its documentation for any purpose is hereby granted without fee,
  provided that the above copyright notice appear in all copies and
  that both that copyright notice and this permission notice appear in
  the supporting documentation, and that the name of the Massachusetts
  Institute of Technology not be used in advertising or publicity
  pertaining to distribution of the software without specific, written
  prior permission.  The Massachusetts Institute of Technology makes
  no representations about the suitability of this software for any
  purpose.  It is provided "as is" without express or implied warranty.
  
  THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL THE MASSACHUSETTS
  INSTITUTE OF TECHNOLOGY BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
  OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
