PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2024-02-01 
   NOTE                 = "CASSINI DS-Kernel Information"
END_OBJECT              = TEXT
                                                                     
END 


General Information About SPICE DS-Kernels
==========================================

   The purpose of the DS-kernel -- which stands for Digital Shape
   Kernel (DSK) -- is to allow various digital shape representations,
   such as triangular plate models or digital elevation models, to be
   combined under a common file format and accessed by a common set of
   subroutines.
 
   Starting with the SPICE Toolkit version N0066, DSKs can be accessed
   by subroutines that are part of the SPICE library, the major
   component of the SPICE Toolkit. For earlier Toolkits, before N0066,
   DSKs can be accessed by subroutines from a special library called
   DSKLIB. These subroutines 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 data
   set.
 
   To use DS-kernels, Leapseconds (LSK), a Frame Definitions Kernel
   (FK), Planetary Constants Kernel (PcK), and possibly even C-Kernel
   (CK) files may also be required.
 
   Refer to the ``dsk.req'' document provided with the Toolkit to get
   more information on how to access DS-kernel data.


CASSINI DS-kernels Contained in This Data Set
==========================================

   The following CASSINI DS-kernels are provided in this data set (only name
   portion of the file name is shown; the extension of all file names
   is ``.bds''):

   Enceladus Shape DSK Files:

      cas_enceladus_ssd_spc_[res]icq_v1.bds
                                     Global coverage DSKs contining shape
                                     models created using the 
                                     stereophotoclinometry (SPC) technique 
                                     developed at the Jet Propulsion 
                                     Laboratory by processing Cassini's 
                                     imaging data during Enceladus encounters.
                                     The [res] token indictaes ICQ model's 
                                     ``Q'' number determining the number of plates
                                     (0128 - ~200K plates, 0256 - ~800K
                                     plates, 0512 - ~3M plates, 1024 -
                                     ~12M plates). 

      cas_enceladus_ssd_spc_eq035m_v1.bds    
                                     Local DSK containing data for a 
                                     small area in the equatorial region of 
                                     Enceladus at 35 m resolution.
                                     The shape model was created using the
                                     stereophotoclinometry (SPC) technique
                                     developed at the Jet Propulsion
                                     Laboratory by processing Cassini's
                                     imaging data during Enceladus encounters.

      cas_enceladus_ssd_spc_south[res]m_v1.bds
                                     Local DSKs that comprise the South Pole 
                                     at meter resolution indicated by the [res] 
                                     token (25 m, 50 m, 100 m).
                                     The shape model was created using the
                                     stereophotoclinometry (SPC) technique
                                     developed at the Jet Propulsion
                                     Laboratory by processing Cassini's
                                     imaging data during Enceladus encounters. 


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

   The most detailed description of the data in a binary DSK file is
   provided in metadata included inside the comment area of the file.
   This information can be viewed using utility programs COMMNT and
   SPACIT included into the NAIF Toolkit.


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

   Regarding CASSINI project specific information provided in this data set
   and for general information about SPICE system:
   
      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