MPL CK files. =========================================================================== This ``aareadme.txt'' file describes contents of the kernels/ck directory of the MPL SPICE data server. It was last modified on January 26, 2000. Contact Chuck Acton (818-354-3869, Chuck.Acton@jpl.nasa.gov) or Boris Semenov (818-354-8136, Boris.Semenov@jpl.nasa.gov) if you have any questions regarding this data. Brief Summary -------------------------------------------------------- This directory contains the SPICE C-Kernel files for the MPL lander and its articulating science instruments -- SSI and RA. All files are in IEEE binary format and suitable for ftp binary transfer to use on UNIX workstations and MACs. The following files are present in this directory. (Only file names are shown; the file name extensions of the binary CK files are always ".bc"): Actual Orientation CK files: mpl_cruise lander orientation CK file covering the whole cruise phase of the mission, created by NAIF by merging regular daily SC CK files regularly produced by NAIF from channelized telemetry; Sample Orientation CK files: mpl_edl_initial_sample sample lander orientation CK file covering the initial part of the EDL phase of the mission -- from atmospheric entry through (touchdown - 30..40 seconds); created by NAIF using simulated channelized telemetry from ORT3 with times adjusted provide the same coverage as the final target EDL SPK file; mpl_edl_terminal_sample sample lander orientation CK file covering the final part of the EDL phase of the mission -- from 30..40 seconds before touchdown through touchdown; created by NAIF using simulated channelized telemetry from ORT3 with times adjusted provide the same coverage as the final target EDL SPK file; mpl_surf_sample sample CK file containing lander "landed" orientation starting from touchdown time through the end of the first year of surface operation; created by NAIF using simulated MVACS frame orientation quaternion provided by MVACS team/UCLA during ORT3/MORT6; mpl_ssi_nc_sample sample SSI camera head orientation CK file containing data that have not been corrected for backlash; created by NAIF using camera head position motor counts provided by MIPL/JPL for pre-landing ORTs, with times adjusted to provide the same coverage as the sample RA orientation CK file; mpl_ssi_bl_sample sample SSI camera head orientation CK file containing data corrected for backlash; created by NAIF using camera head position motor counts provided by MIPL/JPL for pre-landing ORTs, with times adjusted to provide the same coverage as the sample RA orientation CK file; mpl_ra_chtlmck_sample RA joints orientation CK file based on the joint angle information from channelized telemetry; created by NAIF from actual RA engineering telemetry collected at one of the ATLO tests during summer 1998; Detailed Information About CK Files -------------------------------------------------------- For details about orientation data stored in a particular CK file refer to the comment area of that file. The comment area can be viewed using SPICE utility programs COMMNT, CLCOMMNT AND SPACIT.