KPL/IK

GRAIL-A MoonKAM Instrument Kernel
===============================================================================

   This Instrument Kernel (IK) file contains Field-Of-View (FOV)
   definitions for GRAIL-A MoonKAM cameras.


Version and Date
-------------------------------------------------------------------------------

   Version 0.1 -- November 1, 2011 -- Boris Semenov, NAIF

      Changed FOV definitions to have the long FOV dimensions be along
      the X axes of the camera frames (along track).

   Version 0.0 -- June 6, 2011 -- Boris Semenov, NAIF

      Initial Release.


References
-------------------------------------------------------------------------------

   1. Kernel Pool Required Reading

   2. GETFOV, getfoc_c, cspice_getfov headers

   3. GRAIL FK file, latest version

   4. RocketCam ED360300 Series Video Cameras Booklet. ED011983.


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

   Boris V. Semenov, NAIF/JPL, (818)-354-8136, Boris.Semenov@jpl.nasa.gov


Implementation Notes
-------------------------------------------------------------------------------

   This file is used by the SPICE system as follows: programs that make
   use of this kernel must ``load'' the kernel, normally during
   program initialization. The SPICE routine FURNSH loads a kernel file
   into the pool as shown below.

      CALL FURNSH ( 'frame_kernel_name; )    -- FORTRAN
      furnsh_c ( "frame_kernel_name" );      -- C
      cspice_furnsh, frame_kernel_name       -- IDL
      cspice_furnsh( 'frame_kernel_name' )   -- MATLAB

   Once the file has been loaded, the SPICE routine GETFOV (getfov_c in
   C, cspice_getfov in IDL and MATLAB) can be used to retrieve FOV
   parameters for a given instrument or camera.

   This file was created and may be updated with a text editor or word
   processor.


Naming Conventions
----------------------------------------------------------

   All names referencing values in this IK file start with the
   characters `INS' followed by the NAIF GRAIL-A spacecraft ID number
   (-177) followed by a NAIF three digit ID code for one of the
   cameras. This is the full list of names and IDs for the cameras
   described by this IK file:

         GRAIL-A_MK1    -177110
         GRAIL-A_MK2    -177120
         GRAIL-A_MK3    -177130
         GRAIL-A_MK4    -177140

   The remainder of the keyword name is an underscore character
   followed by the unique name of the data item. For example, the MK1
   boresight direction in the MK1 frame is specified by:

         INS-177110_BORESIGHT

   The upper bound on the length of the name of any data item is 32
   characters.

   If the same item is included in more than one file, or if the same
   item appears more than once within a single file, the latest value
   supersedes any earlier values.


Camera Descriptions
---------------------------------------------------------

   TBD


Mounting Alignment
--------------------------------------------------------

   Refer to the latest version of the Grail-A Frames Definition Kernel
   (FK) [3] for the GRAIL-A MoonKAM cameras reference frame definitions
   and mounting alignment information.


Camera FOVs
----------------------------------------------------------

   The FOVs for the 6 mm cameras MK1, MK2, and MK3 are defined as
   rectangular pyramids centered on the +Z axis of the corresponding
   frames, with the angular extents of 57.8 degrees in the YZ plane and
   the angular extents of 44.1 degrees in the XZ plane.

      \begindata

         INS-177110_FOV_CLASS_SPEC       = 'ANGLES'
         INS-177110_FOV_SHAPE            = 'RECTANGLE'
         INS-177110_FOV_FRAME            = 'GRAIL-A_MK1'
         INS-177110_BORESIGHT            = ( 0.0, 0.0, 1.0 )
         INS-177110_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
         INS-177110_FOV_REF_ANGLE        = ( 28.90 )
         INS-177110_FOV_CROSS_ANGLE      = ( 22.05 )
         INS-177110_FOV_ANGLE_UNITS      = ( 'DEGREES' )

         INS-177120_FOV_CLASS_SPEC       = 'ANGLES'
         INS-177120_FOV_SHAPE            = 'RECTANGLE'
         INS-177120_FOV_FRAME            = 'GRAIL-A_MK2'
         INS-177120_BORESIGHT            = ( 0.0, 0.0, 1.0 )
         INS-177120_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
         INS-177120_FOV_REF_ANGLE        = ( 28.90 )
         INS-177120_FOV_CROSS_ANGLE      = ( 22.05 )
         INS-177120_FOV_ANGLE_UNITS      = ( 'DEGREES' )

         INS-177130_FOV_CLASS_SPEC       = 'ANGLES'
         INS-177130_FOV_SHAPE            = 'RECTANGLE'
         INS-177130_FOV_FRAME            = 'GRAIL-A_MK3'
         INS-177130_BORESIGHT            = ( 0.0, 0.0, 1.0 )
         INS-177130_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
         INS-177130_FOV_REF_ANGLE        = ( 28.90 )
         INS-177130_FOV_CROSS_ANGLE      = ( 22.05 )
         INS-177130_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      \begintext

   The FOV for the 50 mm camera MK4 is defined as a rectangular
   pyramid centered on the +Z axis of the corresponding frame, with the
   angular extent of 7.2 degrees in the YZ plane and the angular extent
   of 5.4 degrees in the XZ plane.

      \begindata

         INS-177140_FOV_CLASS_SPEC       = 'ANGLES'
         INS-177140_FOV_SHAPE            = 'RECTANGLE'
         INS-177140_FOV_FRAME            = 'GRAIL-A_MK4'
         INS-177140_BORESIGHT            = ( 0.0, 0.0, 1.0 )
         INS-177140_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
         INS-177140_FOV_REF_ANGLE        = ( 3.6 )
         INS-177140_FOV_CROSS_ANGLE      = ( 2.7 )
         INS-177140_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      \begintext

End of the IK file.