PDS_VERSION_ID          = PDS3                                                
RECORD_TYPE             = STREAM                                              
                                                                              
OBJECT                  = TEXT                                                
   INTERCHANGE_FORMAT   = ASCII                                               
   PUBLICATION_DATE     = 2007-11-01                                          
   NOTE                 = "SCL-Kernel Information"                            
END_OBJECT              = TEXT                                                
                                                                              
END                                                                           
                                                                              
                                                                              
General information about SPICE SCL-kernels                                   
===========================================                                   
                                                                              
   In the SPICE system, the Spacecraft Clock Kernel (SCLK) contains           
   information required to perform a mapping between Ephemeris time           
   (ET) and spacecraft on-board time (SCLK).                                  
                                                                              
   The spacecraft clock coefficient information contained in a SCLK           
   file can be manipulated by a collection 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 SCLK Required Reading (sclk.req) document provided with       
   the Toolkit or available from the NAIF Node of the PDS, to get more        
   information on how to convert between ET and spacecraft clock times.       
                                                                              
                                                                              
New Horizons SCL-kernels Contained in This Directory                          
===================================================                           
                                                                              
   This volume contains the following New Horizons Flyby (DIF) and Deep       
   Impact Impactor (DII) SCLK files (only the leading portion of the          
   file name is shown; the extension of all file names is ".tsc"):            
                                                                              
      new_horizons_295            New Horizons SCLK kernel file. This is      
                                  the official SCLK file used by the ground   
                                  system during mission operations.           
                                                                              
Kernel File Details                                                           
===================                                                           
                                                                              
   The most detailed description of the data in an SCLK file is               
   provided in metadata included inside the descriptive text areas            
   within the file. This information can be viewed using any text             
   editor.