Stuff for July 14-15 (9:34 PM CDT Sunday) graze of mag 4 nu Virginis
around Champaign, IL.

<P>
David Dunham is apparently coming here, to Champaign,
driving from Wash. D.C. area (!) and arriving Sunday evening.
<P>
In a phone message Saturday afternoon, he suggested that
interested parties try to set up along Staley Rd
in western Champaign -- a mile W of Duncan, two miles W of Mattis,
and suggested Staley and Brittany Trail (about 4 blocks south of Kirby)
as a corner to meet around 8PM on Sunday.
<P>
Please ignore my Mapblast map from yesterday; instead see Dunham's at
<PRE>
  <A HREF="http://www.lunar-occultations.com/iota/0714/exped712.htm">http://www.lunar-occultations.com/iota/0714/exped712.htm</A>
</PRE>
or at this site, <PRE>
  <A HREF="http://niri.ncsa.uiuc.edu/slevy/nuvir/">http://niri.ncsa.uiuc.edu/slevy/nuvir/</A>
</PRE>

<P>
<HR>
<P>

<UL>
<LI><P> <A HREF="dunham-meeting-place.jpeg">
	<IMG SRC="dunham-meeting-place-small.jpeg"><BR>
	Graze path detail, with meeting place marked<BR>
	<B>(Staley Rd and Brittany Trail,
	in SW Champaign, S of Kirby and W of Duncan)</B>.<BR>
	Click for full-sized (2Kpixel, 570KB) map.</A>
	<P>

<LI><P> <A HREF="dunham-champaign.jpeg">
	<IMG SRC="dunham-champaign-small.jpeg"><BR>
	Graze path on Champaign-area map
	(click for large (2Kpixel, 860K) JPEG)</A>
	<P>

<LI><P> <A HREF="herald-lunar-profile.gif">
	  <IMG SRC="herald-lunar-profile.jpeg"><BR>
	  Lunar profile from David Herald, author of the occultation software
	  (click for full-sized version)</A>
	<P>
	Note that most of the lunar-profile measurements from previous grazes
	lie <B>deeper</B> (further south) than the solid curve.
	<P>
	Herald writes:
	<BLOCKQUOTE>
OCCULT has a facility to plot the results from ~2800 previous grazes against
the profile prediction. I have attached a copy of the profile for Nu Vir. It
is plotted for longitude 88.0W, uses the [P,D] reference frame (+/- 0.5deg)
to select past grazes, and uses data from 65 observed grazes. From that you
can see that the observed profile is significantly inside that predicted by
the Watts profile. [Note that the scatter of points above the profile is
from bad observations; other small-scale scatter is due to the effect of
differing librations for the different graze observations, and errors in
site coordinates...]. In my view you need to be at least 1.5miles inside the
predicted path to be sure of seeing events - and unless you have many
observers I would recommend being almost 2 miles inside.
	</BLOCKQUOTE>
	<P>
<LI><P> <A HREF="dunham-iota.txt">Original announcement from David Dunham</A>
     of <A HREF="http://www.lunar-occultations.com/iota/iotandx.htm">IOTA</A>
	<P>

</UL>
<P>

<P>

Old stuff:
<UL>
<LI><A HREF="lunar-profile.gif">lunar profile map</A><P>

<LI><A HREF="map.gif">mapblast map, superceded by Dunham's above</A><P>
<LI><A HREF="predictions.txt">tabular graze prediction</A>
</UL>