PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2003-10-15 NOTE = "SCL-Kernel Information" END_OBJECT = TEXT END General information about SPICE SCL-kernels =========================================== In the SPICE system, Spacecraft Clock (or SCL) -kernel contains a set of information required to perform a mapping between Ephemeris time (ET) and spacecraft on-board time (SCLK). The spacecraft clock coefficient information contained in SCLK file can be manipulated by a collection of FORTRAN 77 subroutines to provide a transformation between Ephemeris and spacecraft on-board times. These subroutines are part of the SPICELIB library and can be integrated into user application programs. The SPICE system toolkit for a number of computer platforms or information regarding how it can be obtained is located in the SOFTWARE subdirectory of the main directory of this dataset. Refer to the SCLK.REQ document provided with the toolkit or available from the NAIF Node of PDS if SPICE toolkit is not included with this data set to get more information about conversion between ET and spacecraft clock times. DS1 SCL-kernel contained in this directory ======================================= This volume contains the following DS1SCLK files (only name portion of the file name is shown; the extension of all SCLK file names is ".tsc"): ds1_sclkscet_00071 DS1 Spacecraft clock coefficients Kernel (SCLK) file generated by converting corresponding SCLKvSCET file produced by the spacecraft team to SPICE SCLK format using MAKCLK SPICE Utility program. Kernel File Details =================== The most detailed description of the data in an SCLK file is provided in metadata included inside the description area of the file. This information can be viewed using any text editor program. Contact Information =================== Regarding DS1 project specific information provided in this data set and for general information about SPICE system: Charles H. Acton, Jr, (818)-354-3869, Chuck.Acton@jpl.nasa.gov, or Boris Semenov (818)-354-8136 Boris.Semenov@jpl.nasa.gov address: Navigation and Ancillary Information Facility (NAIF) Jet Propulsion Laboratory MS 301-125L 4800 Oak Grove Drive Pasadena CA 91109 USA