KPL/IK Europa Clipper Star Tracker Instrument Kernel ============================================================================== This instrument kernel (I-kernel) contains Field-Of-View (FOV) and other geometric parameter definitions for the Star Trackers (STs). Version and Date ---------------------------------------------------------- Version 0.5 -- February 17, 2022 -- Matt Barnes, NAIF Updated FOV cone radius for EUROPAM_ST1/-159030 and EUROPAM_ST2/-159031 from 11-deg to 10.845-deg per [5]. Version 0.4 -- August 28, 2019 -- Boris Semenov, NAIF Added FOVs for ST1 and ST2 Sun Keep-Out Zones (KOZ) for Inner Cruise (IC) -- EUROPAM_ST1_KOZSUN_IC/-159036 and EUROPAM_ST2_KOZSUN_IC/-159037 -- based on [4]. Version 0.3 -- March 20, 2019 -- Boris Semenov, NAIF Changed EUROPAM_ST1/-159030 and EUROPAM_ST2/-159031 FOVs from from 10x10 deg half angle squares to an 11-deg radius cones per [3]. Version 0.2 -- February 26, 2018 -- Boris Semenov, NAIF Added placeholder sections for various non-FOV parameters. Reformatted and updated comments. Version 0.1 -- November 11, 2014 -- Eric W. Ferguson, JPL Initial version. References ---------------------------------------------------------- 1. ``Kernel Pool Required Reading'' 2. ``C-kernel Required Reading'' 3. ``Europa - Kernel Updates'', e-mail from Ben Bradley, 03/11/19 4. APGEN Jira AP-778 (Add New SRU KOZ to SPICE Kernels for +/- 45 deg for Inner Cruise) 5. ``Europa Clipper GN&C Subsystem CDR'', SRU_CDR_2019-07-18a.pptx Contact Information ---------------------------------------------------------- Eric W. Ferguson, JPL, (818)-634-1928, eric.w.ferguson@jpl.nasa.gov Matt J. Barnes, JPL, (818)-354-5942, matthew.j.barnes@jpl.nasa.gov Boris V. Semenov, 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. 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_ST1 -159030 EUROPAM_ST2 -159031 EUROPAM_ST1_KOZSUN -159034 EUROPAM_ST2_KOZSUN -159035 EUROPAM_ST1_KOZSUN_IC -159036 EUROPAM_ST2_KOZSUN_IC -159037 EUROPAM_ST1_KOZ -159038 EUROPAM_ST2_KOZ -159039 The remainder of the name is an underscore character followed by the unique name of the data item. For example, the ST1 boresight direction is specified by: INS-159030_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 Detector/Sensor Layout (if applicable) ---------------------------------------------------------- Instrument Pixel-to-3D Coordinate Mapping (if applicable) ---------------------------------------------------------- Instrument Detector/Sensor Parameters (if applicable) ---------------------------------------------------------- Instrument Optical Parameters (if applicable) ---------------------------------------------------------- Instrument Optical Distortion (if applicable) ---------------------------------------------------------- Star Tracker FOV Definitions ---------------------------------------------------------- Description . \begindata INS-159030_FOV_FRAME = 'EUROPAM_ST1' INS-159030_FOV_SHAPE = 'CIRCLE' INS-159030_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159030_FOV_CLASS_SPEC = 'ANGLES' INS-159030_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159030_FOV_REF_ANGLE = ( 10.845 ) INS-159030_FOV_ANGLE_UNITS = 'DEGREES' INS-159031_FOV_FRAME = 'EUROPAM_ST2' INS-159031_FOV_SHAPE = 'CIRCLE' INS-159031_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159031_FOV_CLASS_SPEC = 'ANGLES' INS-159031_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159031_FOV_REF_ANGLE = ( 10.845 ) INS-159031_FOV_ANGLE_UNITS = 'DEGREES' INS-159034_FOV_FRAME = 'EUROPAM_ST1' INS-159034_FOV_SHAPE = 'CIRCLE' INS-159034_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159034_FOV_CLASS_SPEC = 'ANGLES' INS-159034_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159034_FOV_REF_ANGLE = ( 26.0 ) INS-159034_FOV_ANGLE_UNITS = 'DEGREES' INS-159035_FOV_FRAME = 'EUROPAM_ST2' INS-159035_FOV_SHAPE = 'CIRCLE' INS-159035_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159035_FOV_CLASS_SPEC = 'ANGLES' INS-159035_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159035_FOV_REF_ANGLE = ( 26.0 ) INS-159035_FOV_ANGLE_UNITS = 'DEGREES' INS-159036_FOV_FRAME = 'EUROPAM_ST1' INS-159036_FOV_SHAPE = 'CIRCLE' INS-159036_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159036_FOV_CLASS_SPEC = 'ANGLES' INS-159036_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159036_FOV_REF_ANGLE = ( 45.0 ) INS-159036_FOV_ANGLE_UNITS = 'DEGREES' INS-159037_FOV_FRAME = 'EUROPAM_ST2' INS-159037_FOV_SHAPE = 'CIRCLE' INS-159037_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159037_FOV_CLASS_SPEC = 'ANGLES' INS-159037_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159037_FOV_REF_ANGLE = ( 45.0 ) INS-159037_FOV_ANGLE_UNITS = 'DEGREES' INS-159038_FOV_FRAME = 'EUROPAM_ST1' INS-159038_FOV_SHAPE = 'CIRCLE' INS-159038_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159038_FOV_CLASS_SPEC = 'ANGLES' INS-159038_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159038_FOV_REF_ANGLE = ( 20.0 ) INS-159038_FOV_ANGLE_UNITS = 'DEGREES' INS-159039_FOV_FRAME = 'EUROPAM_ST2' INS-159039_FOV_SHAPE = 'CIRCLE' INS-159039_BORESIGHT = ( 0.0, 0.0, 1.0 ) INS-159039_FOV_CLASS_SPEC = 'ANGLES' INS-159039_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-159039_FOV_REF_ANGLE = ( 20.0 ) INS-159039_FOV_ANGLE_UNITS = 'DEGREES' \begintext End of IK.