DAWN IK files. =========================================================================== This ``aareadme.txt'' file describes contents of the kernels/ik directory of the DAWN SPICE data server. It was last modified on December 20, 2007. 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 I-Kernel files for the DAWN spacecraft science instruments. All files are in IEEE text format and must be copied using ftp ASCII transfer to any non-UNIX workstation. The following files are present in this directory. (Only file names are shown; the file name extensions of the text IK files are always ``.ti''): dawn_fc_vNN DAWN Framing Camera 1/2 (FC) IK file containing instrument FOV definition and other geometric parameters; dawn_grand_vNN DAWN Gamma Ray and Neutron Detector (GRaND) IK file containing instrument FOV definition and other geometric parameters; dawn_struct_vNN IK file containing instrument FOV definitions for for DAWN antennas, star trackers and other structures; dawn_vir_vNN DAWN Visible and Infrared Mapping Spectrometer (VIR) IK file containing instrument FOV definition and other geometric parameters; If multiple versions of an IK file are provided for an instrument, always use the latest version (unless earlier version is needed for some special reasons.)