PDS_VERSION_ID          = PDS3                                                
RECORD_TYPE             = STREAM                                              
LABEL_REVISION_NOTE     = "                                                   
  2014-07 SwRI:BTCarcich                                                      
    Added Alice IK Version 120                                                
    Corrected typo in SDC IK Version                                          
  2014-10 SwRI:BTCarcich                                                      
    Made versions generic (vNNNx.ti)                                          
    Allowed for fixing previously archived files                              
      by adding optional 'x' character after NNN.                             
      - in this case, to                                                      
        - replace a TAB in the ALICE IK.                                      
        - fix an error in the RALPH IK.                                       
"                                                                             
                                                                              
OBJECT                  = TEXT                                                
   INTERCHANGE_FORMAT   = ASCII                                               
   PUBLICATION_DATE     = 2014-07-01                                          
   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                   
   where NNNx indicates a file versioning scheme; refer to the                
   next section for the naming scheme.                                        
                                                                              
   N.B. the x suffix before the .ti filetype suffix is optional               
        and usually not present; refer the next section for details.          
                                                                              
      nh_alice_vNNNx.ti   IK file for the ALICE UV imaging spectrograph       
                                                                              
      nh_lorri_vNNNx.ti   IK file for the LORRI instrument                    
                                                                              
      nh_pepssi_vNNNx.ti  IK file for the PEPSSI instrument                   
                                                                              
      nh_ralph_vNNNx.ti   IK for the RALPH instrument. RALPH                  
                          comprises two separate instruments,                 
                          LEISA and MVIC, and this file describes both.       
                          N.B. The NH_RALPH frame (SPICE ID -982000) has      
                               no corresponding FOV, although a boresight     
                               and FOV_FRAME are defined in this file.        
                                                                              
      nh_rex_vNNNx.ti     IK file for the REX (Radio Science                  
                         Experiment)                                          
                                                                              
      nh_sdc_vNNNx.ti     IK file for the Venetia Student Dust Counter        
                                                                              
      nh_swap_vNNNx.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_vNNNx.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;                                   
                                                                              
      x         is an optional single character, typically one of the letters 
                u-z if present, indicating that the file has been edited from 
                the project and/or previously archived version to correct     
                minor typographical errors, but that the project version of   
                the file will likely never have these errors corrected e.g.   
                because the errors are in the comments and do not affect the  
                functionality of the file.                                    
                                                                              
   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.