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

   In the SPICE system, I-kernels contains instrument parameters such
   as field-of-view size, shape, and orientation, timing information,
   detector and filter attributes, etc.

   The data contained in I-kernel files can be accessed and manipulated
   by subroutines which are part of the SPICE library, the major
   component of the SPICE Toolkit. The SPICE subroutines can be
   integrated into user application programs. For information on the
   SPICE Toolkit and/or how to obtain it, please consult SPICE_INST.CAT
   and SOFT.CAT.

   Refer to the KERNEL.REQ document provided with the Toolkit to get
   more information on how to access I-kernel data.


Rosetta IK Files
================

   This file describes the contents of the DATA/IK directory of the
   ROSETTA SPICE data set.

   All these IK files are produced manually with information supplied
   by Rosetta teams describing the science instruments.

   All IK files (*.TI) contained in this directory are UNIX text files
   with lines terminated by <LF> only.


Rosetta I-Kernels Contained in this Data Set
============================================

   The following I-kernels are provided in this data set:

   Rosetta Orbiter IKs:

      ROS_ALICE_V12.TI
      ROS_ALICE_V15.TI
      ROS_ALICE_V16.TI
      ROS_ALICE_V17.TI     Contain ALICE optics, detector and
                           field-of-view parameters.

      ROS_CONSERT_V10.TI
      ROS_CONSERT_V11.TI   Contain CONSERT parameters and
                           field-of-view definitions.

      ROS_COSIMA_V13.TI
      ROS_COSIMA_V15.TI    Contain COSIMA parameters and field-of-view
                           definitions.

      ROS_GIADA_V11.TI
      ROS_GIADA_V12.TI     Contain GIADA parameters and field-of-view
                           definitions.

      ROS_MIDAS_V10.TI
      ROS_MIDAS_V11.TI     Contain MIDAS parameters and field-of-view
                           definitions.

      ROS_MIRO_V10.TI
      ROS_MIRO_V11.TI      Contain MIRO instrument parameters.

      ROS_NAVCAM_V01.TI
      ROS_NAVCAM_V03.TI    Contain NAVCAM parameters and field-of-view
                           definitions.

      ROS_OSIRIS_V10.TI
      ROS_OSIRIS_V11.TI
      ROS_OSIRIS_V12.TI
      ROS_OSIRIS_V15.TI
      ROS_OSIRIS_V17.TI    Contain OSIRIS Narrow Angle Camera (NAC) and
                           Wide Angle Camera (WAC) optics, detector,
                           and field-of-view parameters.

      ROS_ROSINA_V10.TI
      ROS_ROSINA_V11.TI
      ROS_ROSINA_V12.TI    Contain ROSINA sensor parameters and
                           field-of-view definitions.

      ROS_RPC_V15.TI
      ROS_RPC_V17.TI
      ROS_RPC_V19.TI
      ROS_RPC_V20.TI       Contain Rosetta Plasma Consortium (RPC)
                           sensor parameters.

      ROS_SREM_V01.TI      Contains Rosetta Standard Radiation Environment
                           Monitor (SREM) detector, and field-of-view
                           parameters.

      ROS_STR_V10.TI
      ROS_STR_V12.TI       Contain Star Tracker field-of-view
                           definitions.

      ROS_VIRTIS_V11.TI
      ROS_VIRTIS_V12.TI
      ROS_VIRTIS_V13.TI
      ROS_VIRTIS_V14.TI    Contain VIRTIS optics, detector and
                           field-of-view parameters.

   Rosetta Lander IKs:

      ROS_CIVA_V10.TI
      ROS_CIVA_V11.TI      Contains CIVA optics, detector and
                           field-of-view parameters.

      ROS_DIM_V10.TI 
      ROS_DIM_V11.TI       Contain DIM field-of-view definitions.

      ROS_ROLIS_V03.TI     Contains ROLIS optics, detector and
                           field-of-view parameters.


   In the cases when several versions of the same instrument kernel are
   provided, the most recent version supersedes the other 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.

   At least a basic knowledge of the SPICE system is needed in order to
   use these kernels. The SPICE Toolkit provides versions in Fortran
   (SPICELIB), C (CSPICE), IDL (Icy), Matlab (Mice), and Java
   (JNISpice) and the user can choose any one that suits him/her.

   The SPICE routine FURNSH can be used to load a kernel file into a
   SPICE-based application to make kernel data usable with SPICE
   APIs.

   If two (or more) text kernels assign value(s) using the '=' operator
   to identical keywords, the data value(s) associated with the last
   loaded occurrence of the keyword are used -all earlier values have
   been replaced with the last loaded value(s).