KPL/IK

HERA MILANI Star Tracker Instrument kernel
==============================================================================

   This instrument kernel (I-kernel) contains the MILANI Star Tracker (STR)
   optics, detector, and field-of-view parameters.


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

   Version 0.0 -- May 8, 2023 -- Alfredo Escalante Lopez, ESAC/ESA

      Preliminary version.


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

   1. ``Kernel Pool Required Reading''

   2. ``C-kernel Required Reading''

   3. Hera Frames Definition Kernel (FK), latest version.

   4. Milani Spacecraft Frames Kernel (FK), latest version.

   5. ``Milani Cubesat Instruments'',
      https://www.heramission.space/hera-mission-milani-cubesat

   6. ``Milani'',
      https://www.nanosats.eu/sat/milani


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

   If you have any questions regarding this file contact the
   ESA SPICE Service at ESAC:

           Alfredo Escalante Lopez
           (+34) 91-8131-429
           spice@sciops.esa.int

   or NAIF at JPL:

           Boris Semenov
           +1 (818) 354-8136
           Boris.Semenov@jpl.nasa.gov


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

   Applications that need SPICE I-kernel data must ``load'' the I-kernel file,
   normally during program initialization.

   Loading the kernel using the SPICELIB routine FURNSH causes the data items
   and their associated values present in the kernel to become associated with
   a data structure called the ``kernel pool''. The application program may
   then obtain the value(s) for any IK data item using the SPICELIB routines
   GDPOOL, GIPOOL, GCPOOL. Routine GETFOV may be used if the file contains
   instrument field-of-view (FOV) specification. See [1] for details.

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


Conventions for Specifying Data
------------------------------------------------------------------------------

   Data items are specified using ``keyword=value'' assignments [1]. All
   keywords referencing values in this I-kernel start with the characters
   `INS' followed by the NAIF MILANI instrument ID code, constructed using the
   spacecraft ID number (-9102) followed by the NAIF three digit ID number.
   The ID numbers are defined in [4] as follows:

               Instrument name          ID
               --------------------   ---------
               MILANI_STR             -9102610

   The remainder of the keyword is an underscore character followed by the
   unique name of the data item. For example, the boresight of LIDAR
   is specified by

               INS-9102610_BORESIGHT

   The upper bound on the length of all keywords is 32 characters.

   If a keyword is included in more than one file, or if the same keyword
   appears more than once within a single file, the last assignment supersedes
   any earlier assignments.


Overview
------------------------------------------------------------------------------

   From [5]:

   MILANI counts with a Star Tracker instrument for measurements around the 
   asteroid.



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

   Refer to the latest version of the Milani Spacecraft Frames Kernel (FK) [4]
   for the STR reference frame definitions and mounting alignment
   information.

Apparent FOV Layout
------------------------------------------------------------------------------

   This section provides a diagram illustrating the STR apparent FOV
   layout in the corresponding reference frame.

   TBD.


Optical Parameters
------------------------------------------------------------------------------

   TBD.



CCD Parameters
------------------------------------------------------------------------------

   TBD

   ------------------------------------
          parameter           value
   ------------------------------------
   Pixel size, um           TBD x TBD
   Detector Array Size      TBD x TBD
   Detector Array Center    TBD x TBD
   ------------------------------------

   The values are given in microns for PIXEL_SIZE keywords and in counts for
   PIXEL_SAMPLES, PIXEL_LINES, and CENTER keywords.


Filter Parameters
------------------------------------------------------------------------------

   TBD.

FOV Definitions
------------------------------------------------------------------------------

   This section contains definitions for the STR FOV. These definitions
   are provided in a format required by the SPICE (CSPICE) function GETFOV
   (getfov_c).

   STR:

      \begindata

         INS-9102610_FOV_FRAME          = 'MILANI_STR'
         INS-9102610_FOV_SHAPE          = 'CIRCLE'
         INS-9102610_BORESIGHT          = ( 1.0, 0.0, 0.0    )
         INS-9102610_FOV_CLASS_SPEC     = 'ANGLES'
         INS-9102610_FOV_REF_VECTOR     = ( 0.0, 1.0, 0.0    )
         INS-9102610_FOV_REF_ANGLE      = ( 20.0             )
         INS-9102610_FOV_ANGLE_UNITS    = 'DEGREES'

      \begintext


Optical Distortion
------------------------------------------------------------------------------

   TBD.


Platform ID
-------------------------------------------------------------------------------

   This number is the NAIF instrument ID of the platform on which the sensors 
   are mounted. For the Milani Star Tracker (STR) platform is spacecraft. 
   Please refer to the latest version of the Milani NAIF ID Codes Definitions 
   [4] for mapping of ID codes to sensor and structure names.


   \begindata

      INS-9102610_PLATFORM_ID  = ( -9102610 )

   \begintext


End of IK file.