KPL/IK

LADEE NMS Instrument Kernel
===============================================================================

   This Instrument Kernel (IK) file contains the Field-Of-View (FOV)
   definitions for the Neutral Mass Spectometer (NMS) instrument.


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

   Version 0.0 -- October 16, 2013 -- Boris Semenov, NAIF


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

   1. Kernel Pool Required Reading

   2. GETFOV, getfoc_c, cspice_getfov headers

   3. LADEE FK file, latest version

   4. STK Sensor files provided by Mark Shirley, 09/25/13. 


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 structure.
 
   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 ID number for one of the NMS
   detectors:

      LADEE_NMS_CLOSED   -12310
      LADEE_NMS_OPEN     -12320

   These IDs are defined in the latest LADEE FK ([3]).

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

      INS-12310_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.


Instrument Description
---------------------------------------------------------

   Neutral Mass Spectometer (NMS) is a high sensitivity quadrupole mass
   spectrometer with a mass range from 2 to 150 Dalton and unit mass
   resolution. For lunar orbits of 50 km or lower NMS can detect
   helium, argon and other species either released from the deep lunar
   interior or from the surface of the moon.


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

   Refer to the latest version of the LADEE Frames Definition Kernel
   (FK) [3] for the LADEE NMS reference frame definitions and mounting
   alignment information.


Instrument FOVs
----------------------------------------------------------

   This section defines NMS FOVs based on [4]:

          NAME            ID     HALFSIZE   SHAPE    BSIGHT    FRAME
      ----------------  -------  ---------  -------  ------  ----------
      LADEE_NMS_CLOSED  -12310   45.0  deg   cone      Z     LADEE_NMS 
      LADEE_NMS_OPEN    -12320    9.0  deg   cone      Z     LADEE_NMS 

   The FOVs are defined in this data block.

      \begindata

      INS-12310_FOV_CLASS_SPEC       = 'ANGLES'
      INS-12310_FOV_SHAPE            = 'CIRCLE'
      INS-12310_FOV_FRAME            = 'LADEE_NMS'
      INS-12310_BORESIGHT            = ( 0.0, 0.0, 1.0 )
      INS-12310_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
      INS-12310_FOV_REF_ANGLE        = ( 45.0 )
      INS-12310_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      INS-12320_FOV_CLASS_SPEC       = 'ANGLES'
      INS-12320_FOV_SHAPE            = 'CIRCLE'
      INS-12320_FOV_FRAME            = 'LADEE_NMS'
      INS-12320_BORESIGHT            = ( 0.0, 0.0, 1.0 )
      INS-12320_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
      INS-12320_FOV_REF_ANGLE        = ( 9.0 )
      INS-12320_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      \begintext

End of the IK file.