Solar System Generic Moons DSK Files
=============================================================================

   This "aareadme.txt" file describes the contents of the
   kernels/dsk/moons directory of the Solar System Generic SPICE Kernel
   Dataset. It also provides the file naming conventions used for the
   Solar System Generic Moons DSK kernels.

   It was last modified on August 23rd, 2022 by Alfredo Escalante Lopez, ESAC/ESA.


Brief Summary
--------------------------------------------------------

   This directory contains the SPICE Digital Shape-Kernel files for
   Solar System Generic Moons.


File naming conventions
--------------------------------------------------------

   The naming scheme for the Natural Bodies DSKs is:

      BODY_RRRR_PRO[_ID][_DESC]_vNN.bds

   where

        BODY            body:

                           phobos for Phobos
                           deimos for Deimos

        RRRR            number of plates:

                           Knnn for nnn thousand plates
                           Mnnn for nnn million plates

        PRO             producer:

                           esa for European Space Agency
                           dlr for Deutsches Zentrum fur Luft- und
                               Raumfahrt e.V.
                           gas for Gaskell, R.W.
                           tho for Thomas, P.
                           ern for Ernst, C.
                           mol for Mars Global Surveyor MOLA data.


        NN              version number (required; e.g. 01)


Current DSK Kernels Set
--------------------------------------------------------

   phobos_k137_dlr_v01.bds

      Contains Phobos shape data based on Mars-Express HRSC images.


   phobos_m001_gas_v01.bds

      Contains Phobos shape data by Robert Gaskell based on
      Viking Orbiter 1 VIS-A and VIS-B camera images.


   phobos_m012_ern_v01.bds

      Contains Phobos shape data by Carolyn Ernst based on a single
      coregistered collection with united images from Viking Orbiter,
      Phobos 2, Mars Global Surveyor, Mars Express, and Mars Reconnaissance
      Orbiter.


   deimos_k002_tho_v01.bds

      Contains Deimos shape data by Peter Thomas based on
      Viking Orbiter images.


   deimos_m003_ern_v01.bds

      Contains Deimos shape data by Carolyn Ernst based on a single
      coregistered collection with united images from Viking Orbiter,
      Phobos 2, Mars Global Surveyor, Mars Express, and Mars Reconnaissance
      Orbiter.


   moon_m005_lola_v01.bds

      Contains Moon shape data based on LRO LOLA downsized to 7
      pixels per degree data processed and generated by ESA SPICE
      Service (ESS).


Kernel File Details
--------------------------------------------------------

   The contents of any DSK file may be easily determined using the
   'dskbrief' utility program, Example:

      % dskbrief <dsk_file_name>

   Descriptive information about how/why/when an DSK file was created
   is usually available in the 'comment area' of the file. This may be
   viewed using the 'commnt' utility program available in all copies of
   the SPICE Toolkit. Use the '-r' option to read the comments. Example:

      % commnt -r <dsk_file_name>

   All binary DSK files (*.bds) contained in this directory are
   little-endian (LTL-IEEE) binary files.

   These DSK files have been produced by Nat Bachman NAIF/JPL
   (nathaniel.bachman@jpl.nasa.gov) and/or by
   Marc Costa (mcosta@sciops.esa.int).


Other directory contents
--------------------------------------------------------

     aareadme.txt                         This file.

     BODY_RRRR_PRO[_ID][_DESC]_vNN.obj    Each DSK has an ASCII vertex-facet
                                          format output file for visualization
                                          purposes (these files can be
                                          previewed natively in modern
                                          Operating Systems).

     BODY_RRRR_PRO[_ID][_DESC]_vNN.png    Each DSK has an image example in png
                                          format for convenience.


Particulars
--------------------------------------------------------

    Please note that in order to use DSK data you need to use
    N0066 or later Toolkits.


Contact Information
--------------------------------------------------------

   If you have any questions regarding this file contact the
   ESA SPICE Service (ESS) at ESAC:

           Alfredo Escalante Lopez
           (+34) 91-8131-429
           spice@cosmos.esa.int


References and required readings
--------------------------------------------------------

   1. ``DSK Required Reading'', NAIF Document


End of aareadme file.