PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT INTERCHANGE_FORMAT = ASCII PUBLICATION_DATE = 2008-11-12 NOTE = "Viking Orbiter I-Kernel Information" END_OBJECT = TEXT END General information about SPICE I-kernels ========================================= In the SPICE system, I-kernels contain field-of-view specifications, internal timing parameters, detector geometry specifications and other geometric parameters for the instrument. These parameters along with knowledge of the spacecraft pointing (C kernel) and instrument mounting alignment (Frames Kernel) allow the user to use SPICE APIs to calculate the view directions of the individual instrument pixels or detectors. The data contained in I-kernel files can be accessed and manipulated in conjunction with other data using the SPICE Toolkit APIs, calls to which can be integrated into user application programs. The information regarding how to obtain the SPICE system toolkit for a number of languages and computer platforms is located in the ``/software'' subdirectory of the main directory of this data set. Refer to the ``kernel.req'' document provided with the Toolkit to get more information on how to access I-kernel data. Viking Orbiter I-kernels provided in This Data Set ================================================== The following VO I-Kernel files are provided in this data set (only name portion of the file name is shown on the right; the extension of all file names is ``.ti''): vo1_visa[_vVV] IK file(s) containing VO1 VISA camera mounting alignment and internal geometry characteristics extracted from SEDR (Supplemental Experiment Data Record) files generated by the Viking Project and by T.C. Duxbury, JPL. vo1_visb[_vVV] IK file(s) containing VO1 VISB camera mounting alignment and internal geometry characteristics extracted from SEDR (Supplemental Experiment Data Record) files generated by the Viking Project and by T.C. Duxbury, JPL. vo2_visa[_vVV] IK file(s) containing VO2 VISA camera mounting alignment and internal geometry characteristics extracted from SEDR (Supplemental Experiment Data Record) files generated by the Viking Project and by T.C. Duxbury, JPL. vo2_visb[_vVV] IK file(s) containing VO2 VISB camera mounting alignment and internal geometry characteristics extracted from SEDR (Supplemental Experiment Data Record) files generated by the Viking Project and by T.C. Duxbury, JPL. If multiple IK files of the same kind are present, the one with the latest version (VV) supersedes all previous versions. Kernel File Details =================== The most detailed description of the data in an IK 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 VO 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