PDS_VERSION_ID          = PDS3
RECORD_TYPE             = STREAM

OBJECT                  = TEXT
   INTERCHANGE_FORMAT   = ASCII
   PUBLICATION_DATE     = 2002-11-01 
   NOTE                 = "MGS I-Kernel Information"
END_OBJECT              = TEXT
                                                                     
END 


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

   In the SPICE system, I-kernels describe how an instrument is mounted
   to the instrument platform. I-kernels may also contain instrument
   field-of-view specifications, principal axes specifications, etc.
   
   The I-kernel mounting alignment, platform orientation, along with
   knowledge of the spacecraft position (SP kernel) and instrument
   pointing (C kernel), allows the user to use SPICELIB or CSPICE to
   calculate the pointing of instruments. The data contained in
   I-kernel files can be accessed and manipulated by a collection of
   FORTRAN 77 subroutines which are part of the SPICELIB library or C
   functions which are part of the CSPICE library. It is used in
   conjunction with other data. The SPICELIB subroutines or CSPICE
   functions 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.
 
   Refer to the "kernel.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 on how to access I-kernel
   data.


MGS I-kernels provided on this volume
=====================================

   The following MGS I-Kernel files are provided on this volume (only 
   name portion of the file name is shown on the right; the extension of 
   all file names is ".ti"):
   
           mgs_mager_[VER] Magnetometer/Electron-Reflectometer (MAG/ER) IK
                           file containing instrument mounting alignment
                           and geometry parameters. This file also contains
                           all MAG/ER and some MGS Solar Array Frame
                           definitions;
 
           mgs_mhsa_[VER]  Mars Horizon Sensor Assembly (MHSA) IK file
                           containing instrument mounting alignment and
                           individual sensor geometry parameters. This file
                           also contains MHSA Frame definitions;
 
           mgs_moc_[VER]   Mars Orbiter Camera (MOC) IK file containing
                           instrument mounting alignment, FOV and optics
                           geometry parameters. This file also contains MOC
                           Frame definitions;
 
           mgs_mola_[VER]  Mars Orbiter Laser Altimeter (MOLA) IK file
                           containing instrument mounting alignment and FOV
                           geometry parameters. This file also contains
                           MOLA Frame definition and coordinates of the
                           spacecraft center of mass and antenna phase
                           centers for a some spacecraft/antenna
                           configurations.
 
           mgs_tes_[VER]   Thermal Emission Spectrometer (TES) IK file
                           containing instrument mounting alignment, FOV
                           and optics geometry parameters. This file also
                           contains TES Frame definitions.

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

   If this volume contains multiple IK files for a particular
   instrument, the one with the latest version ([VER]) supersedes all
   previous versions.


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

   The most detailed description of the data in an IK 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