KPL/IK Europa Clipper MASPEX Instrument Kernel ============================================================================== This instrument kernel (I-kernel) contains Field-Of-View (FOV) and other geometric parameter definitions for the MASPEX instrument. Version and Date ---------------------------------------------------------- Version 0.5 -- September 17, 2021 -- Matt Barnes, JPL Redefined EUROPAM_MASPEX_KOZ/-159502 FOV as a polygon to implement the update to 90 deg half angle FOV per [4]. Version 0.4 -- December 8, 2020 -- Eric W. Ferguson, JPL Removed references to MASPEX radiator frame and FOV as no operational constraints are derived from its position Version 0.3 -- February 26, 2018 -- Boris Semenov, NAIF Added placeholder sections for various non-FOV parameters. Minor updates to the comments. Version 0.2 -- June 8, 2017 -- Boris Semenov, NAIF Redefined EUROPAM_MASPEX_RAD/-159501 FOV as a polygon to work around a limitation in GFTFOV. Reformatted comments. Version 0.1 -- October 8, 2015 -- Eric W. Ferguson, JPL Initial version. References ---------------------------------------------------------- 1. ``Kernel Pool Required Reading'' 2. ``C-kernel Required Reading'' 3. Europa Instrument Fact Sheets: https://europaems.jpl.nasa.gov/alfresco/mmsapp/mms.html#/workspaces/master/sites/europa/documents/_17_0_5_1_8af0285_1415240264808_136692_232061/views/MMS_1441753698362_0ceb59af-b3e0-42c0-b5f0-a2e120f07865 4. MASPEX MICD, Drawing 10414239, Rev C Contact Information ---------------------------------------------------------- Eric W. Ferguson, JPL, (818)-634-1928, eric.w.ferguson@jpl.nasa.gov Boris V. Semenov, JPL, (818)-354-8136, boris.semenov@jpl.nasa.gov Matt Barnes, JPL, (818)-354-5942, matthew.j.barnes@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. Conventions for Specifying Data ---------------------------------------------------------- All names referencing values in this I-kernel start with the characters `INS' followed by the NAIF ID code for the particular instrument detector or keep out zone: EUROPAM_MASPEX -159500 EUROPAM_MASPEX_KOZ -159502 The remainder of the name is an underscore character followed by the unique name of the data item. For example, the MASPEX boresight direction is specified by: INS-159500_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 ---------------------------------------------------------- Mounting Alignment ---------------------------------------------------------- Refer to the latest version of the Europa Mission Frames Definition Kernel (FK) for reference frame definitions and mounting alignment information. Instrument Timing Parameters (if applicable) ---------------------------------------------------------- Instrument Geometric Parameters (if applicable) ---------------------------------------------------------- MASPEX FOV Definitions ---------------------------------------------------------- Description \begindata INS-159500_FOV_FRAME = 'EUROPAM_MASPEX' INS-159500_FOV_SHAPE = 'CIRCLE' INS-159500_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159500_FOV_CLASS_SPEC = 'ANGLES' INS-159500_FOV_REF_VECTOR = ( 0.0, 1.0, 1.0 ) INS-159500_FOV_REF_ANGLE = ( 90.0 ) INS-159500_FOV_ANGLE_UNITS = 'DEGREES' \begintext MASPEX Keep-Out-Zone (KOZ) FOV Definitions ---------------------------------------------------------- Mechanical keep out zone description \begindata INS-159502_FOV_FRAME = 'EUROPAM_MASPEX' INS-159502_FOV_SHAPE = 'POLYGON' INS-159502_BORESIGHT = ( 0.0 0.0 1.0 ) INS-159502_FOV_BOUNDARY_CORNERS = ( 0.999998476913 0.000000000000 0.001745328366 0.707105704202 0.707105704202 0.001745328366 0.000000000000 0.999998476913 0.001745328366 -0.707105704202 0.707105704202 0.001745328366 -0.999998476913 0.000000000000 0.001745328366 -0.707105704202 -0.707105704202 0.001745328366 -0.000000000000 -0.999998476913 0.001745328366 0.707105704202 -0.707105704202 0.001745328366 ) \begintext End of IK.