PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2000-01-04 
   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 or information regarding
   how it can be obtained is located in the SOFTWARE subdirectory of
   the main directory of this dataset.
   
   Refer to the SCLK.REQ document provided with the toolkit or available
   from the NAIF Node of PDS if SPICE toolkit is not included with
   this data set to get more information about conversion between ET
   and spacecraft clock times.


MGS SCL-kernel contained on this volume
=======================================

   This volume contains the following MGS SCLK files (only name
   portion of the file name is shown on the right; the extension of 
   all file names is ".tsc"):
   
           MGS_SCLKSCET_00024   MGS Spacecraft clock coefficients Kernel
                                (SCLK) file generated by converting
                                corresponding SCLKvSCET file produced by
                                SCOPS/LMA to SPICE SCLK format using MAKCLK
                                SPICE Utility program;
 
   This SCLK file contains actual MGS on-board clock to ET mapping 
   coefficients computed using time calibration packets from the spacecraft
   engineering telemetry.


Kernel File Details
===================

   The most detailed description of the data in an SCLK file is 
   provided in metadata included inside the description area of 
   the file. This information can be viewed using any text editor
   program.
   

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

   Regarding MGS 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 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