=============================================================================
SMART-1 SCLK Files
=============================================================================

  Last update:  27 Feb 2007  

  This "aareadme.txt" file describes the contents of the KERNELS/SCLK
  directory of the SMART-1 SPICE data server.  It also provides the file 
  naming conventions used for the SMART-1 SCLK kernels, and it provides
  identification of the most current version of SCLK files.

  SCLK files are created from the information contained in the ESOC's DDID
  Time Correlation Packets.


  All SCLK files (*.TSC) contained in this directory are UNIX text files.
  These may be used in a non-compatible text environment by using
  the ASCII mode of FTP to port the files.  [Ref 4b]

  Contact Jose Luis Vazquez-Garcia (jlvazquez@sciops.esa.int) or Joe Zender 
  (Joe.Zender@esa.int) if you have any questions.


=============================================================================
References
=============================================================================
   1. Data Delivery Interface Document (DDID)       Issue B5 (MEX-ESC-IF-5003)
       27 Mar 2003

    2. SCLK Required Reading. NAIF Document No. 222.02  06 Oct 1999

    3. Auxiliary Data Conversion into SPICE Kernels and Distribution. 
       (MEX-EST-PL-10210)

    4. Selected SPICE Tutorials from the NAIF server:  
ftp://naif.jpl.nasa.gov/pub/naif/toolkit_docs/Tutorials/office/individual_docs

       a) SCLK Tutorial               13_lsk_and_sclk.ppt
       b) Porting Kernels Tutorial    09_porting_kernels.ppt


  
=============================================================================
SMART-1 SCLK Directory Structure
=============================================================================
 aareadme.txt        Text file describing the directory structure, the naming
                     conventions for the SCLKs, and the current version(s) of
                     each SCLK type.

 former_versions     Subdirectory that contains obsolete versions of the 
                     SCLK files that have been updated in the Current SCLK
                     Kernels Set, and fake SCLK files used before the creation
                     of real ones.




=============================================================================
SMART-1 Spacecraft SCLK Naming Covention      SMART1_yymmdd_[spec].TSC
=============================================================================


          token           description
          ------------    --------------------------------------------------
           yymmdd         File release date.
           [spec]         Data type specification Identifier:
                             STEP   -- real SCLK files
                             FAKE   -- special fake SCLK files 

=============================================================================
Current SCLK Kernels Set
=============================================================================

 Name                    Comments
 ----------------------  -----------------------------------------------------
 SMART1_070227_STEP.TSC  This file is a SPICE spacecraft clock (SCLK) kernel
                         containing information required for SMART-1 attitude
                         data retrieval. This file contains the data necessary
                         for converting from ET to ticks for the actual 
                         SMART-1 spacecraft clock. This file has been generated
                         using DDID's Time Correlation Packets from ESOC.