Date: Fri, 12 Mar 2004 09:16:25 -0700 (MST)
From: Terry Forrester <terryf@vega.lpl.arizona.edu>
To: Mark Showalter <mshowalter@mail.arc.nasa.gov>
cc: mgordon@mail.arc.nasa.gov
Subject: Re: Voyager UVS ring occultation data set
X-Junkmail-Status: score=0/60, host=arc-relay1.arc.nasa.gov


Hi Mark and Mitch:

	I've pretty much finished looking over the UVS ring occultation
volume VG_2802. Overall, I'm quite impressed with the completeness of this
work and the sheer number of files.

	I spent some time browsing the tables in the EASYDATA directory,
particularly those for the Voyager 2 Delta Sco egress occultation with
which I'm the most familiar.  I was easily able to make plots of ring
opacity vs. range to view the data. This is a nice, easy to use form of the
data that should be sufficient for most purposes. I also looked at the tables
in the EDITDATA directory, but don't have a really good way of viewing
binary tables at the moment. I tried to resurrect my IDL -> OAL software,
but was never able to get it to work; it kept crashing every time I tried
to load a table (with OaIDLReadObject). However, I was able to use tbtool
to to check out the table structure, to see how the GEOMETRY and CALIB
tables are related to the spectrum index.

	I also read through most of the documentation and catalog files.
I found a number of minor things that should be addressed, so I'll include
a list of these at the end of this message.



					Terry


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Documentation and catalog file comments:



---------------
aareadme.txt
---------------

	A number of places in this file refer only to Voyager 2, even though
one Voyager 1 occultation data set is included. The obvious places are the
NOTE near the top, the title, and the first line of the introduction. Also,
the Voyager 1 SPICE files are not listed in the directory listing, though
present in the SPICE directory itself. I suspect this file was written before
the Voyager 1 Iota Her data was added.

	The last line of the description of the SPICE/PC directory looks like
something was left out or should have been something else entiirely  (reads
"This workstations running Unix.").

------------------
catalog/person.cat
------------------

	Area code for BSANDEL, ABROADFOOT and TFORRESTER should be 520, not
602. Phone numbers themselves are still correct, though.


-------------------
catalog/catinfo.txt
-------------------

	This file has a listing for 'insthost.cat' (for Voyager 2), while
catalog files (vg1host.cat, vg2host.cat) are present for both spacecraft.


-------------------
catalog/dataset.cat
-------------------
	Under the 'Ancillary Data' heading, 'PPS' should be 'UVS'.


-------------------
calib/calinfo.txt
-------------------

	No mention is made of the Voyager 1 iota Her occultation, and no
calibration files are present for that data set.


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