PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2012-12-21
   NOTE                 = "I-Kernel Information"
END_OBJECT              = TEXT

END


General information about SPICE I-kernels
=========================================

   In the SPICE system, I-kernels contain field-of-view specifications,
   internal timing parameters, detector geometry specifications and
   other geometric parameters for the instrument. These parameters
   along with knowledge of the spacecraft pointing (C kernel) and
   instrument mounting alignment (Frames Kernel) allow the user to use
   SPICE APIs to calculate the view directions of the individual
   instrument pixels or detectors.
 
   The data contained in I-kernel files can be accessed and manipulated
   in conjunction with other data using the SPICE Toolkit APIs, calls
   to which can be integrated into user application programs. The
   information regarding how to obtain the SPICE system toolkit for a
   number of languages and computer platforms is located in the
   ``/software'' subdirectory of the main directory of this data set.
 
   Refer to the ``kernel.req'' document provided with the Toolkit to
   get more information on how to access I-kernel data.


NEAR I-kernels Provided in This Data Set
========================================

   The following NEAR I-Kernel files are provided in this data set:

           msi15.ti        Multi-Spectral Imager (MOC) IK file
                           containing instrument mounting alignment,
                           FOV and optics geometry parameters. This IK
                           also contains the definitions of the
                           spacecraft and instrument reference frames.

           nlr04.ti        NEAR Laser Rangefinder (NLR) IK file
                           containing instrument mounting alignment and
                           FOV geometry parameters. This IK also
                           contains the definitions of the spacecraft
                           and instrument reference frames.

           nis14.ti        NEAR Imaging Spectrometer (NIS) IK file
                           containing instrument mounting alignment,
                           FOV and optics geometry parameters. This IK
                           also contains the definitions of the
                           spacecraft and instrument reference frames.

           grs12.ti        X-Ray Gamma-Ray Spectrometer (XGRS) IK files
           xrs12.ti        containing instrument mounting alignment,
                           FOV and optics geometry parameters. This IK
                           also contains the definitions of the
                           spacecraft and instrument reference frames.

   All IK files provided in this data set contain actual data.


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

   The most detailed description of the data in an IK file is provided
   in metadata included inside the descriptive text areas within the
   file. This information can be viewed using any text editor.


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

   For NEAR specific information, contact:

      NEAR Science Data Center
      Howard W. Taylor
      The Johns Hopkins University
      Applied Physics Laboratory
      11100 Johns Hopkins Road
      Laurel MD 20723
      Email: Howard.Taylor@jhuapl.edu

   For general information about the 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