General information about SPICE I-kernels                                     
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   In the SPICE system, I-kernels contains instrument parameters such         
   as field-of-view size, shape, and orientation, timing information,         
   detector and filter attributes, etc.                                       
                                                                              
   The data contained in I-kernel files can be accessed and manipulated       
   by subroutines which are part of the SPICE library, the major              
   component of the SPICE Toolkit. The SPICE subroutines can be               
   integrated into user application programs. For information on the          
   SPICE toolkit and/or how to obtain it, please consult                      
   SPICE_INST.CAT and SOFT.CAT.                                               
                                                                              
   Refer to the KERNEL.REQ document provided with the Toolkit to get          
   more information on how to access I-kernel data.                           
                                                                              
Mars Express IK Files                                                         
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   This file describes the contents of the DATA/IK directory of the           
   Mars Express SPICE dataset.                                                
                                                                              
   All these IK files are produced manually with the information              
   supplied by Mars Express teams describing the science instruments.         
   At the beginning of the kernel, there is usually a version-tracking        
   paragraph, providing information about the creators of the kernel.         
                                                                              
   All IK files (*.TI) contained in this directory are UNIX text              
   files. In order to be used in a non-UNIX environment, they have to         
   be converted to the appropiate end-line convention. For example, the       
   lines have to be terminated by a <CR><LF> combination for Windows          
   platforms.                                                                 
                                                                              
Mars Express I-Kernels Contained in this Data Set                             
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   The following I-kernels are provided in this data set (vv refers to the    
   version of the kernel):                                                    
                                                                              
       MEX_ASPERA_Vvv.TI   ASPERA instrument kernel, containing instrument    
                           parameters for ASPERA.                             
                                                                              
       MEX_HRSC_Vvv.TI     HRSC instrument kernel, containing instrument      
                           parameters for HRSC.                               
                                                                              
       MEX_OMEGA_Vvv.TI    OMEGA instrument kernel, containing instrument     
                           parameters for OMEGA.                              
                                                                              
       MEX_PFS_Vvv.TI      PFS instrument kernel, containing instrument       
                           parameters for PFS.                                
                                                                              
       MEX_VMC_Vvv.TI      VMC instrument kernel, containing instrument       
                           parameters for VMC.                                
                                                                              
                                                                              
   In the case that several versions of the same instrument kernel            
   are provided, the most recent one supersedes the other vesions.            
                                                                              
Kernel file details                                                           
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   The most detailed description of the data in an IK file is provided        
   in metadata included inside the description area of the file. This         
   information can be viewed using any text editor program.