KPL/IK ISEM Instrument kernel =============================================================================== This instrument kernel (I-kernel) contains Rover Module Infrared Spectrometer for ExoMars (ISEM). optics, detector, and field-of-view parameters. Version and Date ------------------------------------------------------------------------------- Version 0.0 -- February 6, 2019 -- Marc Costa Sitja, ESA/ESAC Preliminary Version. References ------------------------------------------------------------------------------- 1. RM Frames Definition Kernel (FK), latest version. 2. ''Kernel Pool Required Reading''. 3. ``Infrared Spectrometer for ExoMars: A Mast-Mounted Instrument for the Rover'', O. I. Korablev et al, ASTROBIOLOGY Volume 17, Number 6 and 7, 2017, DOI: 10.1089/ast.2016.1543 Contact Information ------------------------------------------------------------------------------- If you have any questions regarding this file contact SPICE support at ESA: Marc Costa Sitja (+34) 91-8131-457 mcosta@sciops.esa.int, esa_spice@sciops.esa.int or ROCC at Altec Space: Federico Salvioli +1 (818) 354-8136 federico.salvioli@altecspace.it Implementation Notes ------------------------------------------------------------------------------- Applications that need SPICE I-kernel data must ``load'' the I-kernel file, 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 spiceypy.furnsh( 'frame_kernel_name' ) -- PYTHON 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''. 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. The application program may obtain the value(s) for any other IK data item using the SPICELIB routines GDPOOL, GIPOOL, GCPOOL (gdpool_c, gipool_c, gcpool_c in C, cspice_gdpool, cspice_gipool, cspice_gcpool in IDL and MATLAB). See [1] for details. This file was created with, and can be updated with a text editor or word processor. Naming Conventions and 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 RM instrument ID code. The ISEM instrument IDs are defined in [1] as follows: Instrument name ID -------------------- ------- RM_ISEM -174200 The remainder of the keyword is an underscore character followed by the unique name of the data item. For example, the boresight of ISEM is specified by INS-174200_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 ------------------------------------------------------------------------------- TBD. Apparent FOV Layout --------------------------------------------------------------------------- This section provides a diagram illustrating the ISEM detectors apparent FOVs layout in the corresponding reference frames. The NAVCAM surface slit creates a circular field of view with half cone angle of 0.65 degrees. The following diagrams illustrate the above field of view in the instrument frame: Y X ins ins ^ / ^ / | / | / | / | / | / | / X | / o Y | / o ins |/ 0.65 ins |/ 0.65 x--------> o--------> |\ Z |\ Z | \ ins | \ ins | \ | \ | \ | \ | \ | \ | \ | \ Plane X = 0 Plane Y = 0 Please note that the FOV reference and cross angles are defined with half angle values. Mounting Alignment ------------------------------------------------------------------------------- Refer to the latest version of the RM Frames Definition Kernel (FK) [1] for the ISEM reference frames definitions and mounting alignment information. Optical Parameters --------------------------------------------------------------------------- TBD. FOV Definitions ------------------------------------------------------------------------------- This section contains definitions for the ISEM FOV. These definitions are provided in the format required by the SPICE (CSPICE) function GETFOV (getfov_c). Please note that the FOV reference and cross angles are defined with half angle values. The FoV definition corresponds to the NAIF Body Names: RM_ISEM. \begindata INS-174200_NAME = 'RM_ISEM' INS-174200_BORESIGHT = ( 0.000 0.0000 1.000 ) INS-174200_FOV_FRAME = 'RM_ISEM' INS-174200_FOV_SHAPE = 'CIRCLE' INS-174200_FOV_CLASS_SPEC = 'ANGLES' INS-174200_FOV_REF_VECTOR = ( 1.000 0.000 0.0000 ) INS-174200_FOV_REF_ANGLE = ( 0.65 ) INS-174200_FOV_ANGLE_UNITS = 'DEGREES' \begintext End of IK file.