KPL/IK ROSINA Instrument kernel =========================================================================== This instrument kernel (I-kernel) contains ROSINA sensor parameters and field-of-view definitions. Version and Date --------------------------------------------------------------------------- Version 1.2 -- March 28, 2017 -- Marc Costa Sitja, ESAC/ESA Removed DFMS Narrow Angle (NA) Field-of-view and parameters for it was never used during the mission as specified by Kathrin Altwegg. DFMS Wide Angle (WA) is now simply referred as DFMS. Version 1.1 -- April 26, 2008 -- T. Riesen, PI/UOB, J. Vazquez, ESAC/ESA Corrected FOVs, minor changes to drawings and text Added field of view for the COPS Ram Gauge Version 1.0 -- March 15, 2005 -- Boris Semenov, NAIF/JPL Version number change for the first official release. Version 0.1 -- September 2, 2004 -- Boris Semenov, NAIF/JPL Filled in instrument overview section (copied from [6]). Version 0.0 -- August 5, 2004 -- Boris Semenov, NAIF/JPL Initial release. References --------------------------------------------------------------------------- 1. ``Kernel Pool Required Reading'' 2. ``C-kernel Required Reading'' 3. ``ROSINA EID, Part B'', ROS-EST-RS-3011/EID B, 2001-05-15 4. Rosetta Frames Definition Kernel (FK), latest version. 5. ``ROSINA Users Manual'', RO-ROS-MAN-1009, 2002-12-18 6. ESA Science and Technology Web Server, Rosetta Instruments Area, http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=35061 7. ``ROSINA Instrument Kernel Status'', ESA-SCI-SPICE-TN-20170327, Issue 1, Revision 0, ESA SPICE Service, 27th March 2017 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 Rosetta instrument ID code, constructed using the spacecraft ID number (-226) followed by the NAIF three digit ID number for ROSINA sensor or structure. The IDs for ROSINA are defined in [4] as follows: Instrument name ID -------------------- ------- ROS_ROSINA -226300 ROS_ROSINA_DFMS -226310 ROS_ROSINA_DFMS_URF -226319 ROS_ROSINA_RTOF -226320 ROS_ROSINA_RTOF_URF -226329 ROS_ROSINA_COPS -226330 ROS_ROSINA_COPS_G0 -226331 ROS_ROSINA_COPS_G1 -226332 ROS_ROSINA_COPS_URF -226339 The remainder of the keyword is an underscore character followed by the unique name of the data item. For example, the boresight of the ROSINA DFMS WA FOV is specified by INS-226311_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 [6]: ROSINA (Rosetta Orbiter Spectrometer for Ion and Neutral Analysis) consists of two mass spectrometers, since no single technique is able to achieve the resolution and accuracy required to fulfill the ROSETTA mission goals over the range of molecular masses under analysis. In addition, two pressure gauges (the gauges G0 and G1 that make up the sensor COPS) provide density and velocity data for the cometary gas. The two mass analysers are: * A double focusing magnetic mass spectrometer with a mass range of 1 - 100 amu and a mass resolution of 3000 at 1 % peak height, optimised for very high mass resolution and large dynamic range * A reflectron type time-of-flight mass spectrometer with a mass range of 1 - 300 amu and a mass resolution better than 500 at 1 % peak height, optimised for high sensitivity over a very broad mass range Summary of ROSINA Characteristics Mass (including harnesses, kg): 36 Power consumption (maximum, depending on operating mode, W): 53.0 Mounting Alignment -------------------------------------------------------- Refer to the latest version of the Rosetta Frames Definition Kernel (FK) [4] for the ROSINA reference frame definitions and mounting alignment information. Apparent FOV Layout -------------------------------------------------------- This section provides a diagram illustrating the DFMS, RTOF, and COPS FOV layouts in the corresponding unit reference frames (URF). Note that these frames are the same as the sensor frames, except for the RTOF sensor (see Rosetta Frames kernel for more information). DFMS FOV ^ | | | ^ +Xdfms | | --- +---------|---------+ ^ | WA FOV | | | | | | | | | | | | | | | 40 deg | x-------------> +Ydfms | | +Zdfms | | | | | | | V | | --- +-------------------+ | 40 deg | Boresight (+Z axis) |<----------------->| is into the page | | RTOF FOV ^ | | | ^ +Xrtof | | --- +---------|---------+ ^ |RTOF FOV | | | 10 deg | x-------------> +Zrtof V | -Yrtof | --- +-------------------+ | 40 deg | Boresight (-Y axis) |<----------------->| is into the page | | COPS G0 FOV ^ | | | ^ +Ycops | | --- +---------|---------+ ^ |COPS G0 | FOV | | | | | | | | | | | | | | 305 deg | x------------------> -Zcops | | -Xcops | | | | Boresight (-X axis) | | | is into the page V | | --- +---------|---------+ | 305 deg | |<----------------->| | | COPS G1 FOV ^ | | | ^ +Xcops | | --- +---------|---------+ ^ | | | | | | | | | | | | | | | | 180 deg | X------------------> +Ycops | | +Zcops | | | | Boresight (+Zaxis) | | | is into the page V | | --- +---------|---------+ | 180 deg | |<----------------->| | | FOV Parameters -------------------------------------------------------- The following DFMS, RTOF FOV, and COPS parameters are included in the data section below, from [3]: ------------------------------------------------------- parameter DFMS RTOF COPS G0 COPS G1 ------------------------------------------------------- Field of view (deg) Cross-track 20.0 20.0 155.0 90.0 Along-track 20.0 5.0 155.0 90.0 ------------------------------------------------------- The keywords below provide FOV angular size in radians, with the cross-track size being the first value and the along-track size being the second value in each pair. Since each FOV is just a single pixel IFOV is equal to the FOV in size and the pixel size parameters are set accordingly. \begindata INS-226310_FOV_ANGULAR_SIZE = ( 0.69813170, 0.69813170 ) INS-226310_IFOV = ( 0.69813170 ) INS-226310_PIXEL_SAMPLES = ( 1 ) INS-226310_PIXEL_LINES = ( 1 ) INS-226310_CCD_CENTER = ( 0.5, 0.5 ) INS-226320_FOV_ANGULAR_SIZE = ( 0.69813170, 0.17453293 ) INS-226320_IFOV = ( 0.69813170, 0.17453293 ) INS-226320_PIXEL_SAMPLES = ( 1 ) INS-226320_PIXEL_LINES = ( 1 ) INS-226320_CCD_CENTER = ( 0.5, 0.5 ) INS-226331_FOV_ANGULAR_SIZE = ( 5.4105207, 5.4105207 ) INS-226331_IFOV = ( 5.4105207 ) INS-226331_PIXEL_SAMPLES = ( 1 ) INS-226331_PIXEL_LINES = ( 1 ) INS-226331_CCD_CENTER = ( 0.5, 0.5 ) INS-226332_FOV_ANGULAR_SIZE = ( 3.1415927, 3.1415927 ) INS-226332_IFOV = ( 3.1415927 ) INS-226332_PIXEL_SAMPLES = ( 1 ) INS-226332_PIXEL_LINES = ( 1 ) INS-226332_CCD_CENTER = ( 0.5, 0.5 ) \begintext FOV Definitions --------------------------------------------------------------------------- This section contains definitions for the ROSINA DFMS RTOF, and COPS FOVs. These definitions are provided in the format required by the SPICE (CSPICE) function GETFOV (getfov_c). The set of assignments in the data section below defines the DFMS FOV, RTOF FOV, and COPS with respect to the corresponding instrument frames as a rectangles of the size provided in the section above and the boresight along the +Z axis (for DFMS WA and RTOF) or +X axis (for DFMS NA.) \begindata INS-226310_FOV_FRAME = 'ROS_ROSINA_DFMS' INS-226310_FOV_SHAPE = 'RECTANGLE' INS-226310_BORESIGHT = ( 0.000000 0.000000 1.000000 ) INS-226310_FOV_CLASS_SPEC = 'ANGLES' INS-226310_FOV_REF_VECTOR = ( 1.000000 0.000000 0.000000 ) INS-226310_FOV_REF_ANGLE = ( 10.0 ) INS-226310_FOV_CROSS_ANGLE = ( 10.0 ) INS-226310_FOV_ANGLE_UNITS = 'DEGREES' INS-226320_FOV_FRAME = 'ROS_ROSINA_RTOF' INS-226320_FOV_SHAPE = 'RECTANGLE' INS-226320_BORESIGHT = ( 0.000000 0.000000 1.000000 ) INS-226320_FOV_CLASS_SPEC = 'ANGLES' INS-226320_FOV_REF_VECTOR = ( 1.000000 0.000000 0.000000 ) INS-226320_FOV_REF_ANGLE = ( 5.000 ) INS-226320_FOV_CROSS_ANGLE = ( 20.000 ) INS-226320_FOV_ANGLE_UNITS = 'DEGREES' INS-226331_FOV_FRAME = 'ROS_ROSINA_COPS' INS-226331_FOV_SHAPE = 'RECTANGLE' INS-226331_BORESIGHT = ( 0.000000 -1.000000 0.000000 ) INS-226331_FOV_CLASS_SPEC = 'ANGLES' INS-226331_FOV_REF_VECTOR = ( 1.000000 0.000000 0.000000 ) INS-226331_FOV_REF_ANGLE = ( 77.500 ) INS-226331_FOV_CROSS_ANGLE = ( 77.500 ) INS-226331_FOV_ANGLE_UNITS = 'DEGREES' INS-226332_FOV_FRAME = 'ROS_ROSINA_COPS' INS-226332_FOV_SHAPE = 'RECTANGLE' INS-226332_BORESIGHT = ( 0.000000 0.000000 1.000000 ) INS-226332_FOV_CLASS_SPEC = 'ANGLES' INS-226332_FOV_REF_VECTOR = ( 1.000000 0.000000 0.000000 ) INS-226332_FOV_REF_ANGLE = ( 45.000 ) INS-226332_FOV_CROSS_ANGLE = ( 45.000 ) INS-226332_FOV_ANGLE_UNITS = 'DEGREES' \begintext Platform ID --------------------------------------------------------------------------- This number is the NAIF instrument ID of the platform on which the sensors are mounted. For all ROSINA sensors this platform is the spacecraft. \begindata INS-226310_PLATFORM_ID = ( -226000 ) INS-226320_PLATFORM_ID = ( -226000 ) INS-226330_PLATFORM_ID = ( -226000 ) INS-226331_PLATFORM_ID = ( -226000 ) INS-226332_PLATFORM_ID = ( -226000 ) \begintext