KPL/IK Dawn Framing Camera Instrument kernel ============================================================================== This instrument kernel (I-kernel) contains Framing Camera 1 (FC1) and Framing Camera 2 (FC2) optics, detector, and field-of-view parameters. Version and Date ------------------------------------------------------------------------------ Version 0.2 -- May 26, 2011 -- Stefan Schroeder, MPS; Boris Semenov, NAIF/JPL Updated "Conventions for Specifying Data" section to include ID/name mapping for filters. Updated "Apparent FOV Layout" section to show actual CCD - frame relationship on the FOV layout diagram. Updated "Optical Parameters" section to have correct value for generic optical parameters and to contain actual optical parameters for each filter. Updated "CCD Parameters" section to include keywords with CCD parameters for each filter. Filled in description and keywords in "Filter Parameters" section. Updated "FOV Definitions" section to include FOV for individual filters. Filled in description and keywords in "Optical Distortion" section. Deleted obsolete section "Platform ID". Spell-checked. Version 0.1 -- May 9, 2005 -- Boris Semenov, NAIF/JPL Added radiator FOVs. Version 0.0 -- October 12, 2004 -- Boris Semenov, NAIF/JPL Initial release. References ------------------------------------------------------------------------------ 1. ``Kernel Pool Required Reading'' 2. ``C-kernel Required Reading'' 3. FC ICD/MICD, latest version as of 10/12/04. 4. Dawn Frames Definition Kernel (FK), latest version. 5. ``Calibration Pipeline'', Schroeder & Gutierrez-Marques, DA-FC-MPAE-RP-272 issue 2, March 2011. 6. ``The Dawn Framing Camera'', Sierks et al., Space Sci Rev., DOI 10.1007/s11214-011-9745-4. 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 Dawn instrument ID code, constructed using the spacecraft ID number (-203) followed by the NAIF three digit ID number. This number identifies the generic FC1 or FC2, one of the filters, or the radiator. Generic entries for FC1 of FC2 are identical to those of filter 1 for this is the filter most often used. The ID numbers are defined in [4] as follows: Instrument name ID -------------------- ------- DAWN_FC1 -203110 DAWN_FC1_FILTER_1 -203111 DAWN_FC1_FILTER_2 -203112 DAWN_FC1_FILTER_3 -203113 DAWN_FC1_FILTER_4 -203114 DAWN_FC1_FILTER_5 -203115 DAWN_FC1_FILTER_6 -203116 DAWN_FC1_FILTER_7 -203117 DAWN_FC1_FILTER_8 -203118 DAWN_FC1_RAD -203119 DAWN_FC2 -203120 DAWN_FC2_FILTER_1 -203121 DAWN_FC2_FILTER_2 -203122 DAWN_FC2_FILTER_3 -203123 DAWN_FC2_FILTER_4 -203124 DAWN_FC2_FILTER_5 -203125 DAWN_FC2_FILTER_6 -203126 DAWN_FC2_FILTER_7 -203127 DAWN_FC2_FILTER_8 -203128 DAWN_FC2_RAD -203129 The remainder of the keyword is an underscore character followed by the unique name of the data item. For example, the f/ratio of the FC1 is specified by INS-203110_F/RATIO 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] and [6]: The Dawn Framing Camera comprises a refractive lens system, a set of 7 band-pass filters and a clear filter with wheel mechanism, a baffle with a door in front of the optics tube, a CCD at the focal plane, a thermal stabilization system, and supporting electronics. The active area of the Atmel/Thomson TH7888A CCD is sized 1024 x 1024 pixels or 14.34 x 14.34 mm (14.00 x 14.00 micron per pixel). Mounting Alignment ------------------------------------------------------------------------------ Refer to the latest version of the Dawn Frames Definition Kernel (FK) [4] for the FC reference frame definitions and mounting alignment information. Apparent FOV Layout ------------------------------------------------------------------------------ This section provides a diagram illustrating the FC1 and FC2 apparent FOV layout in the corresponding reference frames. Pixel (0,0) is in the lower left corner of the image, and pixel (1023,1023) is in the top right corner. +X, +Y, +Z axes are defined in the Dawn Frames Definition Kernel (FK) [4]. | 5.47 deg | Boresight (+Z axis) |<----------------->| is into the page | | 1024 pixels/line --- +-------------------+ ^ | | | | | | | +Zfc1 | | | +Zfc2 | |5.47 deg 1024 | x-------------> +Xfc1 | lines | | | +Xfc2 | | | | | | | | v | | | --- (0,0)-------|---------+ Pixel | | +Yfc1 v +Yfc2 Optical Parameters ------------------------------------------------------------------------------ The following FC1 and FC2 nominal first order optical parameters are, from [5]: ------------------------------------------------------------------ parameter FC1 FC2 ------------------------------------------------------------------ Focal Length, mm 150.0 150.0 f/ratio f/7.5 f/7.5 IFOV, rad/pixel 0.0000932 0.0000932 Field of view, deg 5.47 5.47 ------------------------------------------------------------------ In reality, the pixels are not square, being slightly larger in the X direction than the Y direction. Focal lengths are also different for each filter. The keywords below provide the optical parameters for each filter of both cameras. Angular size values are given in radians. Focal length is given in mm, and its uncertainty is 0.01 mm. The FOV is calculated from the focal length given here and the pixel dimensions specified in the ``CCD Parameters'' section; it does not include the radial distortion described in the ``Optical Distortion'' section. The first vector element of the IFOV and FOV angular size keywords refers to the X direction, the second to the Y direction. FC1 filters \begindata INS-203110_FOCAL_LENGTH = ( 150.07 ) INS-203110_IFOV = ( 0.000093242, 0.000093184 ) INS-203110_FOV_ANGULAR_SIZE = ( 0.095480, 0.095420 ) INS-203110_F/RATIO = ( 7.5 ) INS-203111_FOCAL_LENGTH = ( 150.07 ) INS-203111_IFOV = ( 0.000093242, 0.000093184 ) INS-203111_FOV_ANGULAR_SIZE = ( 0.095480, 0.095420 ) INS-203111_F/RATIO = ( 7.5 ) INS-203112_FOCAL_LENGTH = ( 150.11 ) INS-203112_IFOV = ( 0.000093223, 0.000093165 ) INS-203112_FOV_ANGULAR_SIZE = ( 0.095461, 0.095401 ) INS-203112_F/RATIO = ( 7.5 ) INS-203113_FOCAL_LENGTH = ( 150.04 ) INS-203113_IFOV = ( 0.000093261, 0.000093202 ) INS-203113_FOV_ANGULAR_SIZE = ( 0.095499, 0.095439 ) INS-203113_F/RATIO = ( 7.5 ) INS-203114_FOCAL_LENGTH = ( 150.12 ) INS-203114_IFOV = ( 0.000093215, 0.000093156 ) INS-203114_FOV_ANGULAR_SIZE = ( 0.095452, 0.095392 ) INS-203114_F/RATIO = ( 7.5 ) INS-203115_FOCAL_LENGTH = ( 150.16 ) INS-203115_IFOV = ( 0.000093190, 0.000093132 ) INS-203115_FOV_ANGULAR_SIZE = ( 0.095427, 0.095367 ) INS-203115_F/RATIO = ( 7.5 ) INS-203116_FOCAL_LENGTH = ( 150.08 ) INS-203116_IFOV = ( 0.000093238, 0.000093179 ) INS-203116_FOV_ANGULAR_SIZE = ( 0.095476, 0.095416 ) INS-203116_F/RATIO = ( 7.5 ) INS-203117_FOCAL_LENGTH = ( 150.06 ) INS-203117_IFOV = ( 0.000093254, 0.000093196 ) INS-203117_FOV_ANGULAR_SIZE = ( 0.095492, 0.095432 ) INS-203117_F/RATIO = ( 7.5 ) INS-203118_FOCAL_LENGTH = ( 150.38 ) INS-203118_IFOV = ( 0.000093053, 0.000092994 ) INS-203118_FOV_ANGULAR_SIZE = ( 0.095286, 0.095226 ) INS-203118_F/RATIO = ( 7.5 ) \begintext FC2 filters \begindata INS-203120_FOCAL_LENGTH = ( 150.07 ) INS-203120_IFOV = ( 0.000093242, 0.000093184 ) INS-203120_FOV_ANGULAR_SIZE = ( 0.095480, 0.095420 ) INS-203120_F/RATIO = ( 7.5 ) INS-203121_FOCAL_LENGTH = ( 150.07 ) INS-203121_IFOV = ( 0.000093242, 0.000093184 ) INS-203121_FOV_ANGULAR_SIZE = ( 0.095480, 0.095420 ) INS-203121_F/RATIO = ( 7.5 ) INS-203122_FOCAL_LENGTH = ( 150.11 ) INS-203122_IFOV = ( 0.000093223, 0.000093165 ) INS-203122_FOV_ANGULAR_SIZE = ( 0.095461, 0.095401 ) INS-203122_F/RATIO = ( 7.5 ) INS-203123_FOCAL_LENGTH = ( 150.04 ) INS-203123_IFOV = ( 0.000093261, 0.000093202 ) INS-203123_FOV_ANGULAR_SIZE = ( 0.095499, 0.095439 ) INS-203123_F/RATIO = ( 7.5 ) INS-203124_FOCAL_LENGTH = ( 150.12 ) INS-203124_IFOV = ( 0.000093215, 0.000093156 ) INS-203124_FOV_ANGULAR_SIZE = ( 0.095452, 0.095392 ) INS-203124_F/RATIO = ( 7.5 ) INS-203125_FOCAL_LENGTH = ( 150.16 ) INS-203125_IFOV = ( 0.000093190, 0.000093132 ) INS-203125_FOV_ANGULAR_SIZE = ( 0.095427, 0.095367 ) INS-203125_F/RATIO = ( 7.5 ) INS-203126_FOCAL_LENGTH = ( 150.08 ) INS-203126_IFOV = ( 0.000093238, 0.000093179 ) INS-203126_FOV_ANGULAR_SIZE = ( 0.095476, 0.095416 ) INS-203126_F/RATIO = ( 7.5 ) INS-203127_FOCAL_LENGTH = ( 150.06 ) INS-203127_IFOV = ( 0.000093254, 0.000093196 ) INS-203127_FOV_ANGULAR_SIZE = ( 0.095492, 0.095432 ) INS-203127_F/RATIO = ( 7.5 ) INS-203128_FOCAL_LENGTH = ( 150.38 ) INS-203128_IFOV = ( 0.000093053, 0.000092994 ) INS-203128_FOV_ANGULAR_SIZE = ( 0.095286, 0.095226 ) INS-203128_F/RATIO = ( 7.5 ) \begintext CCD Parameters ------------------------------------------------------------------------------ The FC1 and FC2 use a CCD detector of the same type with the following nominal geometry parameters, from [5]. Note that the pixels are not perfectly square, as described in the ``Optical Parameters'' section. -------------------------------------------- parameter value -------------------------------------------- Pixel Size, microns 14.00 Detector Array Size 1024 Detector Array Center 511.5 -------------------------------------------- The values are given in microns for PIXEL_SIZE keywords and in counts for PIXEL_SAMPLES, PIXEL_LINES, and CENTER keywords. FC1 filters \begindata INS-203110_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203110_PIXEL_SAMPLES = ( 1024 ) INS-203110_PIXEL_LINES = ( 1024 ) INS-203110_CCD_CENTER = ( 511.5, 511.5 ) INS-203111_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203111_PIXEL_SAMPLES = ( 1024 ) INS-203111_PIXEL_LINES = ( 1024 ) INS-203111_CCD_CENTER = ( 511.5, 511.5 ) INS-203112_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203112_PIXEL_SAMPLES = ( 1024 ) INS-203112_PIXEL_LINES = ( 1024 ) INS-203112_CCD_CENTER = ( 511.5, 511.5 ) INS-203113_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203113_PIXEL_SAMPLES = ( 1024 ) INS-203113_PIXEL_LINES = ( 1024 ) INS-203113_CCD_CENTER = ( 511.5, 511.5 ) INS-203114_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203114_PIXEL_SAMPLES = ( 1024 ) INS-203114_PIXEL_LINES = ( 1024 ) INS-203114_CCD_CENTER = ( 511.5, 511.5 ) INS-203115_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203115_PIXEL_SAMPLES = ( 1024 ) INS-203115_PIXEL_LINES = ( 1024 ) INS-203115_CCD_CENTER = ( 511.5, 511.5 ) INS-203116_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203116_PIXEL_SAMPLES = ( 1024 ) INS-203116_PIXEL_LINES = ( 1024 ) INS-203116_CCD_CENTER = ( 511.5, 511.5 ) INS-203117_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203117_PIXEL_SAMPLES = ( 1024 ) INS-203117_PIXEL_LINES = ( 1024 ) INS-203117_CCD_CENTER = ( 511.5, 511.5 ) INS-203118_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203118_PIXEL_SAMPLES = ( 1024 ) INS-203118_PIXEL_LINES = ( 1024 ) INS-203118_CCD_CENTER = ( 511.5, 511.5 ) \begintext FC2 filters \begindata INS-203120_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203120_PIXEL_SAMPLES = ( 1024 ) INS-203120_PIXEL_LINES = ( 1024 ) INS-203120_CCD_CENTER = ( 511.5, 511.5 ) INS-203121_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203121_PIXEL_SAMPLES = ( 1024 ) INS-203121_PIXEL_LINES = ( 1024 ) INS-203121_CCD_CENTER = ( 511.5, 511.5 ) INS-203122_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203122_PIXEL_SAMPLES = ( 1024 ) INS-203122_PIXEL_LINES = ( 1024 ) INS-203122_CCD_CENTER = ( 511.5, 511.5 ) INS-203123_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203123_PIXEL_SAMPLES = ( 1024 ) INS-203123_PIXEL_LINES = ( 1024 ) INS-203123_CCD_CENTER = ( 511.5, 511.5 ) INS-203124_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203124_PIXEL_SAMPLES = ( 1024 ) INS-203124_PIXEL_LINES = ( 1024 ) INS-203124_CCD_CENTER = ( 511.5, 511.5 ) INS-203125_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203125_PIXEL_SAMPLES = ( 1024 ) INS-203125_PIXEL_LINES = ( 1024 ) INS-203125_CCD_CENTER = ( 511.5, 511.5 ) INS-203126_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203126_PIXEL_SAMPLES = ( 1024 ) INS-203126_PIXEL_LINES = ( 1024 ) INS-203126_CCD_CENTER = ( 511.5, 511.5 ) INS-203127_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203127_PIXEL_SAMPLES = ( 1024 ) INS-203127_PIXEL_LINES = ( 1024 ) INS-203127_CCD_CENTER = ( 511.5, 511.5 ) INS-203128_PIXEL_SIZE = ( 14.0088, 14.0000 ) INS-203128_PIXEL_SAMPLES = ( 1024 ) INS-203128_PIXEL_LINES = ( 1024 ) INS-203128_CCD_CENTER = ( 511.5, 511.5 ) \begintext Filter Parameters ------------------------------------------------------------------------------ This section contains FC1 and FC2 filter parameters. The FC has a single broad band filter (F1) and 7 narrow band (color) filters (F2-F8). The following filter band center, band width, and effective wavelength (all in nm) data are taken from [5]. FWHM is the Full Width at Half Maximum. The effective wavelength is defined as the integral over the product of the wavelength and the solar spectrum, divided by the integral over the solar spectrum. ------------------------------------------- filter band FWHM effective # center wavelength ------------------------------------------- 1 735 371 732 2 548 43 555 3 749 44 749 4 918 45 917 5 978 85 965 6 829 36 829 7 650 42 653 8 428 40 438 ------------------------------------------- Given below are the center wavelength (BANDCENTER), the FWHM (BANDWIDTH), and effective wavelength (EFF_WAVELENGTH) for each of the filters, all in nm. The nominal values are those for filter 1. FC1 filters \begindata INS-203110_BANDCENTER = ( 735 ) INS-203110_BANDWIDTH = ( 371 ) INS-203110_EFF_WAVELENGTH = ( 732 ) INS-203111_BANDCENTER = ( 735 ) INS-203111_BANDWIDTH = ( 371 ) INS-203111_EFF_WAVELENGTH = ( 732 ) INS-203112_BANDCENTER = ( 548 ) INS-203112_BANDWIDTH = ( 43 ) INS-203112_EFF_WAVELENGTH = ( 555 ) INS-203113_BANDCENTER = ( 749 ) INS-203113_BANDWIDTH = ( 44 ) INS-203113_EFF_WAVELENGTH = ( 749 ) INS-203114_BANDCENTER = ( 918 ) INS-203114_BANDWIDTH = ( 45 ) INS-203114_EFF_WAVELENGTH = ( 917 ) INS-203115_BANDCENTER = ( 978 ) INS-203115_BANDWIDTH = ( 85 ) INS-203115_EFF_WAVELENGTH = ( 965 ) INS-203116_BANDCENTER = ( 829 ) INS-203116_BANDWIDTH = ( 36 ) INS-203116_EFF_WAVELENGTH = ( 829 ) INS-203117_BANDCENTER = ( 650 ) INS-203117_BANDWIDTH = ( 42 ) INS-203117_EFF_WAVELENGTH = ( 653 ) INS-203118_BANDCENTER = ( 428 ) INS-203118_BANDWIDTH = ( 40 ) INS-203118_EFF_WAVELENGTH = ( 438 ) \begintext FC2 filters \begindata INS-203120_BANDCENTER = ( 735 ) INS-203120_BANDWIDTH = ( 371 ) INS-203120_EFF_WAVELENGTH = ( 732 ) INS-203121_BANDCENTER = ( 735 ) INS-203121_BANDWIDTH = ( 371 ) INS-203121_EFF_WAVELENGTH = ( 732 ) INS-203122_BANDCENTER = ( 548 ) INS-203122_BANDWIDTH = ( 43 ) INS-203122_EFF_WAVELENGTH = ( 555 ) INS-203123_BANDCENTER = ( 749 ) INS-203123_BANDWIDTH = ( 44 ) INS-203123_EFF_WAVELENGTH = ( 749 ) INS-203124_BANDCENTER = ( 918 ) INS-203124_BANDWIDTH = ( 45 ) INS-203124_EFF_WAVELENGTH = ( 917 ) INS-203125_BANDCENTER = ( 978 ) INS-203125_BANDWIDTH = ( 85 ) INS-203125_EFF_WAVELENGTH = ( 965 ) INS-203126_BANDCENTER = ( 829 ) INS-203126_BANDWIDTH = ( 36 ) INS-203126_EFF_WAVELENGTH = ( 829 ) INS-203127_BANDCENTER = ( 650 ) INS-203127_BANDWIDTH = ( 42 ) INS-203127_EFF_WAVELENGTH = ( 653 ) INS-203128_BANDCENTER = ( 428 ) INS-203128_BANDWIDTH = ( 40 ) INS-203128_EFF_WAVELENGTH = ( 438 ) \begintext FOV Definitions ------------------------------------------------------------------------------ This section contains definitions for the FC1 and FC2 FOVs. These definitions are provided in a format required by the SPICE (CSPICE) function GETFOV (getfov_c). The set of assignments in the data section below defines the FC1 and FC2 FOVs with respect to the corresponding frames to be a rectangle with the corners defined by the first and last pixels of the first and last lines of the CCD and the boresight along the +Z axis. This FOV definition uses the FOV_ANGULAR_SIZE values from the ``Optical Parameters'' section above converted to degrees. FC1 filters \begindata INS-203110_FOV_FRAME = 'DAWN_FC1' INS-203110_FOV_SHAPE = 'RECTANGLE' INS-203110_BORESIGHT = ( 0.0, 0.0, 150.07 ) INS-203110_FOV_CLASS_SPEC = 'ANGLES' INS-203110_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203110_FOV_REF_ANGLE = ( 2.7353005 ) INS-203110_FOV_CROSS_ANGLE = ( 2.7335816 ) INS-203110_FOV_ANGLE_UNITS = 'DEGREES' INS-203111_FOV_FRAME = 'DAWN_FC1' INS-203111_FOV_SHAPE = 'RECTANGLE' INS-203111_BORESIGHT = ( 0.0, 0.0, 150.07 ) INS-203111_FOV_CLASS_SPEC = 'ANGLES' INS-203111_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203111_FOV_REF_ANGLE = ( 2.7353005 ) INS-203111_FOV_CROSS_ANGLE = ( 2.7335816 ) INS-203111_FOV_ANGLE_UNITS = 'DEGREES' INS-203112_FOV_FRAME = 'DAWN_FC1' INS-203112_FOV_SHAPE = 'RECTANGLE' INS-203112_BORESIGHT = ( 0.0, 0.0, 150.11 ) INS-203112_FOV_CLASS_SPEC = 'ANGLES' INS-203112_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203112_FOV_REF_ANGLE = ( 2.7347562 ) INS-203112_FOV_CROSS_ANGLE = ( 2.7330373 ) INS-203112_FOV_ANGLE_UNITS = 'DEGREES' INS-203113_FOV_FRAME = 'DAWN_FC1' INS-203113_FOV_SHAPE = 'RECTANGLE' INS-203113_BORESIGHT = ( 0.0, 0.0, 150.04 ) INS-203113_FOV_CLASS_SPEC = 'ANGLES' INS-203113_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203113_FOV_REF_ANGLE = ( 2.7358448 ) INS-203113_FOV_CROSS_ANGLE = ( 2.7341260 ) INS-203113_FOV_ANGLE_UNITS = 'DEGREES' INS-203114_FOV_FRAME = 'DAWN_FC1' INS-203114_FOV_SHAPE = 'RECTANGLE' INS-203114_BORESIGHT = ( 0.0, 0.0, 150.12 ) INS-203114_FOV_CLASS_SPEC = 'ANGLES' INS-203114_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203114_FOV_REF_ANGLE = ( 2.7344984 ) INS-203114_FOV_CROSS_ANGLE = ( 2.7327795 ) INS-203114_FOV_ANGLE_UNITS = 'DEGREES' INS-203115_FOV_FRAME = 'DAWN_FC1' INS-203115_FOV_SHAPE = 'RECTANGLE' INS-203115_BORESIGHT = ( 0.0, 0.0, 150.16 ) INS-203115_FOV_CLASS_SPEC = 'ANGLES' INS-203115_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203115_FOV_REF_ANGLE = ( 2.7337822 ) INS-203115_FOV_CROSS_ANGLE = ( 2.7320633 ) INS-203115_FOV_ANGLE_UNITS = 'DEGREES' INS-203116_FOV_FRAME = 'DAWN_FC1' INS-203116_FOV_SHAPE = 'RECTANGLE' INS-203116_BORESIGHT = ( 0.0, 0.0, 150.08 ) INS-203116_FOV_CLASS_SPEC = 'ANGLES' INS-203116_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203116_FOV_REF_ANGLE = ( 2.7351859 ) INS-203116_FOV_CROSS_ANGLE = ( 2.7334670 ) INS-203116_FOV_ANGLE_UNITS = 'DEGREES' INS-203117_FOV_FRAME = 'DAWN_FC1' INS-203117_FOV_SHAPE = 'RECTANGLE' INS-203117_BORESIGHT = ( 0.0, 0.0, 150.06 ) INS-203117_FOV_CLASS_SPEC = 'ANGLES' INS-203117_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203117_FOV_REF_ANGLE = ( 2.7356443 ) INS-203117_FOV_CROSS_ANGLE = ( 2.7339254 ) INS-203117_FOV_ANGLE_UNITS = 'DEGREES' INS-203118_FOV_FRAME = 'DAWN_FC1' INS-203118_FOV_SHAPE = 'RECTANGLE' INS-203118_BORESIGHT = ( 0.0, 0.0, 150.38 ) INS-203118_FOV_CLASS_SPEC = 'ANGLES' INS-203118_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203118_FOV_REF_ANGLE = ( 2.7297428 ) INS-203118_FOV_CROSS_ANGLE = ( 2.7280239 ) INS-203118_FOV_ANGLE_UNITS = 'DEGREES' \begintext FC2 filters \begindata INS-203120_FOV_FRAME = 'DAWN_FC2' INS-203120_FOV_SHAPE = 'RECTANGLE' INS-203120_BORESIGHT = ( 0.0, 0.0, 150.07 ) INS-203120_FOV_CLASS_SPEC = 'ANGLES' INS-203120_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203120_FOV_REF_ANGLE = ( 2.7353005 ) INS-203120_FOV_CROSS_ANGLE = ( 2.7335816 ) INS-203120_FOV_ANGLE_UNITS = 'DEGREES' INS-203121_FOV_FRAME = 'DAWN_FC2' INS-203121_FOV_SHAPE = 'RECTANGLE' INS-203121_BORESIGHT = ( 0.0, 0.0, 150.07 ) INS-203121_FOV_CLASS_SPEC = 'ANGLES' INS-203121_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203121_FOV_REF_ANGLE = ( 2.7353005 ) INS-203121_FOV_CROSS_ANGLE = ( 2.7335816 ) INS-203121_FOV_ANGLE_UNITS = 'DEGREES' INS-203122_FOV_FRAME = 'DAWN_FC2' INS-203122_FOV_SHAPE = 'RECTANGLE' INS-203122_BORESIGHT = ( 0.0, 0.0, 150.11 ) INS-203122_FOV_CLASS_SPEC = 'ANGLES' INS-203122_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203122_FOV_REF_ANGLE = ( 2.7347562 ) INS-203122_FOV_CROSS_ANGLE = ( 2.7330373 ) INS-203122_FOV_ANGLE_UNITS = 'DEGREES' INS-203123_FOV_FRAME = 'DAWN_FC2' INS-203123_FOV_SHAPE = 'RECTANGLE' INS-203123_BORESIGHT = ( 0.0, 0.0, 150.04 ) INS-203123_FOV_CLASS_SPEC = 'ANGLES' INS-203123_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203123_FOV_REF_ANGLE = ( 2.7358448 ) INS-203123_FOV_CROSS_ANGLE = ( 2.7341260 ) INS-203123_FOV_ANGLE_UNITS = 'DEGREES' INS-203124_FOV_FRAME = 'DAWN_FC2' INS-203124_FOV_SHAPE = 'RECTANGLE' INS-203124_BORESIGHT = ( 0.0, 0.0, 150.12 ) INS-203124_FOV_CLASS_SPEC = 'ANGLES' INS-203124_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203124_FOV_REF_ANGLE = ( 2.7344984 ) INS-203124_FOV_CROSS_ANGLE = ( 2.7327795 ) INS-203124_FOV_ANGLE_UNITS = 'DEGREES' INS-203125_FOV_FRAME = 'DAWN_FC2' INS-203125_FOV_SHAPE = 'RECTANGLE' INS-203125_BORESIGHT = ( 0.0, 0.0, 150.16 ) INS-203125_FOV_CLASS_SPEC = 'ANGLES' INS-203125_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203125_FOV_REF_ANGLE = ( 2.7337822 ) INS-203125_FOV_CROSS_ANGLE = ( 2.7320633 ) INS-203125_FOV_ANGLE_UNITS = 'DEGREES' INS-203126_FOV_FRAME = 'DAWN_FC2' INS-203126_FOV_SHAPE = 'RECTANGLE' INS-203126_BORESIGHT = ( 0.0, 0.0, 150.08 ) INS-203126_FOV_CLASS_SPEC = 'ANGLES' INS-203126_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203126_FOV_REF_ANGLE = ( 2.7351859 ) INS-203126_FOV_CROSS_ANGLE = ( 2.7334670 ) INS-203126_FOV_ANGLE_UNITS = 'DEGREES' INS-203127_FOV_FRAME = 'DAWN_FC2' INS-203127_FOV_SHAPE = 'RECTANGLE' INS-203127_BORESIGHT = ( 0.0, 0.0, 150.06 ) INS-203127_FOV_CLASS_SPEC = 'ANGLES' INS-203127_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203127_FOV_REF_ANGLE = ( 2.7356443 ) INS-203127_FOV_CROSS_ANGLE = ( 2.7339254 ) INS-203127_FOV_ANGLE_UNITS = 'DEGREES' INS-203128_FOV_FRAME = 'DAWN_FC2' INS-203128_FOV_SHAPE = 'RECTANGLE' INS-203128_BORESIGHT = ( 0.0, 0.0, 150.38 ) INS-203128_FOV_CLASS_SPEC = 'ANGLES' INS-203128_FOV_REF_VECTOR = ( 1.0, 0.0, 0.0 ) INS-203128_FOV_REF_ANGLE = ( 2.7297428 ) INS-203128_FOV_CROSS_ANGLE = ( 2.7280239 ) INS-203128_FOV_ANGLE_UNITS = 'DEGREES' \begintext Radiator Sun Avoidance FOV Definitions ------------------------------------------------------------------------------ The Sun avoidance FOV for the FC1 and FC2 radiators is a 175 degree cone centered on the spacecraft -X axis [3]. \begindata INS-203119_FOV_FRAME = 'DAWN_SPACECRAFT' INS-203119_FOV_SHAPE = 'CIRCLE' INS-203119_BORESIGHT = ( -1.0, 0.0, 0.0 ) INS-203119_FOV_CLASS_SPEC = 'ANGLES' INS-203119_FOV_REF_VECTOR = ( 0.0, 1.0, 0.0 ) INS-203119_FOV_REF_ANGLE = ( 87.5 ) INS-203119_FOV_ANGLE_UNITS = 'DEGREES' INS-203129_FOV_FRAME = 'DAWN_SPACECRAFT' INS-203129_FOV_SHAPE = 'CIRCLE' INS-203129_BORESIGHT = ( -1.0, 0.0, 0.0 ) INS-203129_FOV_CLASS_SPEC = 'ANGLES' INS-203129_FOV_REF_VECTOR = ( 0.0, 1.0, 0.0 ) INS-203129_FOV_REF_ANGLE = ( 87.5 ) INS-203129_FOV_ANGLE_UNITS = 'DEGREES' \begintext Optical Distortion ------------------------------------------------------------------------------ This section provides optical distortion and geometric calibration data for FC1 and FC2, taken from [5]. A 3d vector (P) in the camera frame is mapped into sample and line (S,L) coordinates in pixels through these equations: ( X ) FL ( P(1) ) ( ) = ------ ( ) ( Y ) P(3) ( P(2) ) where X and Y are the horizontal and vertical distance in millimeters from the center of the CCD. The X and Y directions are defined in the ``Apparent FOV Layout'' section. FL is the focal length in millimeters. R*R = X*X + Y*Y ( dX ) ( X*R*R ) ( ) = E1 ( ) ( dY ) ( Y*R*R ) ( S ) ( Kx 0 ) ( X + dX ) ( S0 ) ( ) = ( ) ( ) + ( ) ( L ) ( 0 Ky ) ( Y + dY ) ( L0 ) S0 and L0 refer to the position of the optical axis on the CCD in pixels, and are equal to the elements of the CCD_CENTER keyword defined in the ``CCD Parameters'' section. The constants Kx and Ky map millimeters to pixels in the focal plane X and Y directions. They are identical to the inverse of the pixel size in millimeters in the X and Y directions. The pixel size in microns is defined by the PIXEL_SIZE keyword in the ``CCD Parameters'' section. E1 is the first radial distortion coefficient. It is a function of wavelength, and as such different for each filter. It has units of 1/(mm*mm). The generic value below is that for filter 1. FC1 filters \begindata INS-203110_RAD_DIST_COEFF = ( 0.0000084 ) INS-203111_RAD_DIST_COEFF = ( 0.0000084 ) INS-203112_RAD_DIST_COEFF = ( 0.0000067 ) INS-203113_RAD_DIST_COEFF = ( 0.0000084 ) INS-203114_RAD_DIST_COEFF = ( 0.0000100 ) INS-203115_RAD_DIST_COEFF = ( 0.0000103 ) INS-203116_RAD_DIST_COEFF = ( 0.0000092 ) INS-203117_RAD_DIST_COEFF = ( 0.0000076 ) INS-203118_RAD_DIST_COEFF = ( 0.0000056 ) \begintext FC2 filters \begindata INS-203120_RAD_DIST_COEFF = ( 0.0000084 ) INS-203121_RAD_DIST_COEFF = ( 0.0000084 ) INS-203122_RAD_DIST_COEFF = ( 0.0000067 ) INS-203123_RAD_DIST_COEFF = ( 0.0000084 ) INS-203124_RAD_DIST_COEFF = ( 0.0000100 ) INS-203125_RAD_DIST_COEFF = ( 0.0000103 ) INS-203126_RAD_DIST_COEFF = ( 0.0000092 ) INS-203127_RAD_DIST_COEFF = ( 0.0000076 ) INS-203128_RAD_DIST_COEFF = ( 0.0000056 ) \begintext End of IK file.