Author:		Jeannie Walldren
Date:		2008-06-16
History:
	2008-06-16 Jeannie Walldren 
			- Original version
	2009-05-21 Jeannie Walldren 
			- A comparison of the version 2 files to version 1 files shows no change.
			- Updated documentation.
	

This directory contains calibration files for ISIS 3 CISSCAL's dn to flux corrections.
They are derived from Cassini Orbiter ISS Volume 11 Version 2 (i.e. coiss_0011_v2).

	AAREADME_offset_isis3.txt 
		- This document, written for ISIS 3 CISSCAL info.
	offset_info.txt  
		- Lists original calibration files used by IDL CISSCAL 3.6


The orignal offset calibration files were in vax format which isis3 does not 
currently handle, so isis2 was used to convert to floating point.  
As newer versions become available, the following steps can be used to convert 
them into cubes.

1) CREATE offset2isis2.pdf SCRIPT
   BEGIN SCRPIT WITH THE LINES
		procedure
		body
   BODY SHOULD CONTAIN THE FOLLOWING LINE FOR EACH *.img VAX FILE IN THE DIRECTORY:
		raw2isis from=vaxfilename.img to=vaxfilename.i2.cub itype=3 in_arch=vax ns=1024 nl=1 skip=4096
   LAST LINE SHOULD READ
	     	end-proc
   
2) RUN SCRIPT IN isis2
	> setisis isis2
	> tae
	> offset2isis2

3) CONVERT isis2 CUBES TO isis3 CUBES 
	> setisis isis3
	> pds2isis from=vaxfilename.i2.cub to=vaxfilename.full.cub
	>reduce from=vaxfilename.full.cub to=vaxfilename.sum2.cub ons=512 onl=1
	>reduce from=vaxfilename.full.cub to=vaxfilename.sum4.cub ons=256 onl=1


Note: It is also possible to convert these vax files to floating point by opening
each of them in idl @cisscal and save them as *.img.cal files.  Then vicar2isis 
(or pds2isis) may be used to import them into isis3.

	nacfm_so_m10.full.cub
	nacfm_so_m10.sum2.cub
	nacfm_so_m10.sum4.cub
	nacfm_so_p5.full.cub
	nacfm_so_p5.sum2.cub
	nacfm_so_p5.sum4.cub
	nacfm_so_p25.full.cub
	nacfm_so_p25.sum2.cub
	nacfm_so_p25.sum4.cub
	wacfm_so_m10.full.cub
	wacfm_so_m10.sum2.cub
	wacfm_so_m10.sum4.cub
	wacfm_so_p5.full.cub
	wacfm_so_p5.sum2.cub
	wacfm_so_p5.sum4.cub
	wacfm_so_p25.full.cub
	wacfm_so_p25.sum2.cub
	wacfm_so_p25.sum4.cub