PDS_VERSION_ID          = PDS3                                                
RECORD_TYPE             = STREAM                                              
                                                                              
OBJECT                  = TEXT                                                
   INTERCHANGE_FORMAT   = ASCII                                               
   PUBLICATION_DATE     = 2008-02-28                                          
   NOTE                 = "I-Kernel Information"                              
END_OBJECT              = TEXT                                                
                                                                              
END                                                                           
                                                                              
                                                                              
General information about SPICE I-kernels                                     
=========================================                                     
                                                                              
   In the SPICE system, I-kernels describe how an instrument is mounted       
   to the instrument platform. I-kernels also contain instrument              
   field-of-view specifications, principal axes specifications and            
   possibly other instrument-specific information useful in the SPICE         
   context.                                                                   
                                                                              
   The I-Kernel mounting alignment, along with knowledge of the               
   spacecraft position (SP kernel) and instrument pointing (C kernel),        
   allows the user to use a collection of subroutines that are part of        
   the SPICELIB library, the major component of the NAIF Toolkit. These       
   subroutines can be integrated into user application programs.              
   Information about obtaining the SPICE Toolkit is located in the            
   "software" subdirectory of the main directory of this dataset.             
                                                                              
   Refer to the Kernel Required Reading (kernel.req) document provided        
   with the toolkit or available from the NAIF Node of the PDS, to get        
   more information on how to access I-Kernel data.                           
                                                                              
                                                                              
New Horizons I-kernels Provided on This Volume                                
=============================================                                 
                                                                              
   This volume contains the following New Horizons IK files                   
                                                                              
      nh_alice_v110.ti   IK file for the ALICE UV spectrometer                
                                                                              
      nh_lorri_v100.ti   IK file for the LORRI instrument                     
                                                                              
      nh_pepssi_v110.ti  IK file for the PEPSSI instrument                    
                                                                              
      nh_ralph_v100.ti   IK for the RALPH instrument. RALPH is                
                         composed of two separate instruments,                
                         LEISA and MVIC.                                      
                                                                              
      nh_rex_v100.ti     IK file for the REX (Radio Science                   
                         Experiment)                                          
                                                                              
      nh_sdc_v100.ti     IK file for the Venetia Student Dust Counter         
                                                                              
      nh_swap_v100.ti    IK file for the SWAP (Solar Wind Around Pluto)       
                         instrument                                           
                                                                              
                                                                              
New Horizons IK File Naming Scheme                                            
===================================                                           
                                                                              
   The New Horizons IKs provided on this volume are named according to        
   the following scheme:                                                      
                                                                              
      sc_inst_vNNN.ti                                                         
                                                                              
   where:                                                                     
                                                                              
      sc        is the name of the spacecraft: "nh" ;                         
                                                                              
      inst      is the name of the instrument: "alice" for the ALICE          
                UV spectrometer, "LORRI" for the Long Range Reconnaissance    
                Imager.                                                       
                                                                              
      vNNN      is the file version number;                                   
                                                                              
   If multiple versions of an IK file are provided for an instrument,         
   always use the latest version (unless an earlier version is needed         
   for some special reasons.)                                                 
                                                                              
                                                                              
Kernel File Details                                                           
===================                                                           
                                                                              
   The most detailed description of the data in an IK file is provided        
   in metadata included inside the descriptive text areas within the          
   file. This information can be viewed using any text editor.