HUYGENS CK files
===========================================================================

     This ``aareadme.txt'' file describes the contents of the kernels/ck
     directory of the HUYGENS SPICE data server.

     It was last modified on September 14, 2018 by Alfredo Escalante, ESAC/ESA.


Brief Summary
--------------------------------------------------------

     This directory contains the SPICE C-Kernel files for the HUYGENS
     spacecraft, its structures, and science instruments. Particularly,
     it contains data for the following HUYGENS frames:

          Frame Name           Relative to            NAIF ID
         -------------------  -------------------    ---------
          HUYGENS_PROBE        J2000                  -150000
		      HUYGENS_DISR         HUYGENS_PROBE          -150100



Other directory contents
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     aareadme.txt        		This file.

Particulars
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     Nothing to report.


Kernel File Details
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	 The file MSOPCK_HUY_CK.BC describes the orientation of
	 the DISR imager as derived by Erich Karkoschka[5].

	 The file MSOPCK_HUY_SPIN_CK.BC describes the orientation
	 as derived by Karkoschka, but the azimuth is obtained by
	 direct integration of the Spin Rate from Housekeeping data.


Contact Information
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References and required readings
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     1. ``Frames Required Reading'', NAIF Document

     2. ``C-Kernel Required Reading'', NAIF Document

     3. ``SCLK Required Reading'', NAIF Document

     4. ``TIME Required Reading'', NAIF Document

	 5. ``DISR imaging and the geometry of the descent of the
	      Huygens probe within Titan's atmosphere''

End of aareadme file.