KPL/IK

LADEE UVS Instrument Kernel
===============================================================================

   This Instrument Kernel (IK) file contains the Field-Of-View (FOV)
   definitions for the Ultraviolet and Visible light Spectrometer (UVS)
   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 UVS
   detectors:

      LADEE_UVSTEL       -12400
      LADEE_UVSSOL       -12500

   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 UVS
   Solar boresight direction in the UVS Solar frame is specified by:

      INS-12500_BORESIGHT

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

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

   The Ultraviolet and Visible light Spectrometer (UVS) science
   instrument consists of a spectrometer, a limb viewing telescope, and
   a solar viewing optic. The instrument is operated in two modes: 1)
   limb viewing, using the limb viewing telescope and 2) solar
   occultation viewing, using the solar viewing optic. In limb viewing
   mode, the UVS limb telescope is pointed above the lunar surface in
   the direction of spacecraft (S/C) flight. In occultation mode, the
   UVS uses its solar viewing optic to monitor the sun as it sets/rises
   across the lunar limb.


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

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


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

   This section defines UVS FOVs based on [4]:

          NAME            ID     HALFSIZE   SHAPE    BSIGHT    FRAME
      ----------------  -------  ---------  -------  ------  ----------
      LADEE_UVSTEL      -12400    0.25 deg   cone      Z     LADEE_UVSTEL
      LADEE_UVSSOL      -12500    0.25 deg   cone      Z     LADEE_UVSSOL 

   The FOVs are defined in this data block.

      \begindata

      INS-12400_FOV_CLASS_SPEC       = 'ANGLES'
      INS-12400_FOV_SHAPE            = 'CIRCLE'
      INS-12400_FOV_FRAME            = 'LADEE_UVSTEL'
      INS-12400_BORESIGHT            = ( 0.0, 0.0, 1.0 )
      INS-12400_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
      INS-12400_FOV_REF_ANGLE        = ( 0.25 )
      INS-12400_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      INS-12500_FOV_CLASS_SPEC       = 'ANGLES'
      INS-12500_FOV_SHAPE            = 'CIRCLE'
      INS-12500_FOV_FRAME            = 'LADEE_UVSSOL'
      INS-12500_BORESIGHT            = ( 0.0, 0.0, 1.0 )
      INS-12500_FOV_REF_VECTOR       = ( 1.0, 0.0, 0.0 )
      INS-12500_FOV_REF_ANGLE        = ( 0.25 )
      INS-12500_FOV_ANGLE_UNITS      = ( 'DEGREES' )

      \begintext

End of the IK file.