PDS_VERSION_ID           = PDS3                                      
RECORD_TYPE              = STREAM                                    
                                                                     
OBJECT                      = TEXT                                   
   INTERCHANGE_FORMAT       = ASCII                                  
   PUBLICATION_DATE         = 1998-07-11                             
   NOTE                     = "SCL-Kernel Information"                             
END_OBJECT                  = TEXT                                   
                                                                     
END 


General information about SPICE SCL-kernels
===========================================

   In the SPICE system, Spacecraft Clock (or SCL) -kernel contains a
   set of information required to perform a mapping between Ephemeris
   time (ET) and spacecraft on-board time (SCLK).
   
   The spacecraft clock coefficient information contained in SCLK file
   can be manipulated by a collection of FORTRAN 77 subroutines to
   provide a transformation between Ephemeris and spacecraft on-board
   times. These subroutines are part of the SPICELIB library and can
   be integrated into user application programs. The SPICE system
   toolkit for a number of computer platforms is located in the SOFTWARE
   subdirectory of the main directory of this dataset. Refer to the
   SCLK.REQ document provided with the toolkit to get more information
   about conversion between ET and spacecraft clock times.


Mars Pathfinder SCL-kernel contained in this dataset
====================================================

   This data set includes a single SCLK file contaning real spacecraft
   clock coefficients (SCLK) for the MPF lander on-board clock. The
   coeffients in the file were obtained as the result of reprocessing 
   of the MPF SCLK calibration data by David A. Wagner and James F. 
   Schmidling at JPL after the mission.


SCL-kernel file naming schema
=============================

   The SCL-kernel file in this dataset is a SPICE text kernel format
   file, MPF_SCLK.TSC, that conforms to the UNIX text end-of-line convention.
   
   The label for the SCL-kernel file is stored separately in file
   named MPF_SCLK.LBL.


Contact Information
===================

   Regarding MPF project specific information provided in this data
   set and for general information about SPICE system:
   
      Charles H. Acton, Jr, 
      (818)-354-3869, 
      Chuck.Acton@jpl.nasa.gov, 
      
   or 
   
      Boris V. Semenov, 
      (818)-354-8136, 
      Boris.Semenov@jpl.nasa.gov
      
   address:
   
      Navigation and Ancillary Information Facility (NAIF)
      Jet Propulsion Laboratory
      MS 301-125L
      4800 Oak Grove Drive
      Pasadena CA 91109 USA