PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2007-10-19 NOTE = "C-Kernel Information" END_OBJECT = TEXT END General information about SPICE C-kernels ========================================= In the SPICE system, pointing data for an instrument platform, or for a specific instrument, are stored as C-kernels (CK). The pointing of a platform or an instrument is often expressed in terms of a transformation matrix from some standard base reference frame to a instrument-fixed frame. In the past, the instrument was often a camera, and the transformation was thus dubbed the ``C-matrix''; hence the choice of C as the name for the pointing kernel. The data contained in C-kernel files can be accessed and manipulated by a collection of subroutines that are part of the SPICELIB library, the major component of the NAIF Toolkit. These subroutines can be integrated into user application programs. Information about obtaining the SPICE Toolkit is located in the "software" subdirectory of the main directory of this dataset. To use C-kernels, a Spacecraft Clock Kernel (SCLK) is required. Also, for C-Kernels containing orientation of project-defined frames, a Frame Kernel file is required. Refer to the CK Required Reading (ck.req) document provided with the Toolkit or available from the NAIF Node of the PDS, to get more information on how to access C-kernel data. New Horizons C-kernels Contained on This Volume ============================================== This directory contains the SPICE C-kernel files for the New Horizons mission. All files are in IEEE big endian binary format and suitable for use on UNIX workstations and MACs. The following CK files are provided in this directory (only the leading portion of the file name is shown; the extension of all CK file names is ".bc"): merged_nhpc_2006_v011.bc New Horizons spacecraft orientation CK file covering all of 2006 based on spacecraft telemetry data. merged_nhpc_2007_01_v006.bc New Horizons spacecraft orientation CK file covering January of 2007 based on spacecraft telemetry data. merged_nhpc_2007_02_v007.bc New Horizons spacecraft orientation CK file covering February of 2007 based on spacecraft telemetry data. merged_nhpc_2007_03_v007.bc New Horizons spacecraft orientation CK file covering March of 2007 based on spacecraft telemetry data. merged_nhpc_2007_04_v006.bc New Horizons spacecraft orientation CK file covering April of 2007 based on spacecraft telemetry data. merged_nhpc_2007_05_v007.bc New Horizons spacecraft orientation CK file covering May of 2007 based on spacecraft telemetry data. merged_nhpc_2007_06_v004.bc New Horizons spacecraft orientation CK file covering June of 2007 based on spacecraft telemetry data. merged_nhpc_2007_07_v001.bc New Horizons spacecraft orientation CK file covering July of 2007 based on spacecraft telemetry data. merged_nhpc_2007_08_v001.bc New Horizons spacecraft orientation CK file covering August of 2007 based on spacecraft telemetry data.