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Folks,<br>
<br>
P413 is the station furthest out the SE arm, near the Jama Road.
Its location is now settled as the array reaches completion.<br>
<br>
Clear skies,<br>
Al<br>
<div class="moz-forward-container"><br>
<br>
<br>
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<div class="moz-cite-prefix">Dear Rodrigo, Eduardo, Joaquin<br>
<br>
cc: members<br>
<br>
After the discussion among Science team members, we agree<br>
to put the weather station close to P413 at the UTM coordinate <br>
<pre wrap=""> x = 634286, y = 7461559
80m south west to the P413 (see attached as a rough sketch.)
If you need further information to continue the installation
work, please let me know.
best regards,
ryu
</pre>
On 11/25/13 5:24 PM, awootten wrote:<br>
</div>
<blockquote cite="mid:5293B1EB.8030308@nrao.edu" type="cite">
<meta content="text/html; charset=ISO-8859-15"
http-equiv="Content-Type">
<div class="moz-cite-prefix">I agree with your proposal.
Thanks, Nick!<br>
<br>
Clear skies,<br>
Al<br>
On 11/25/13 2:56 PM, Nick Whyborn wrote:<br>
</div>
<blockquote
cite="mid:CAKu61kp0tXnARW_bfp+BRW7FaiyJGHChuOQTWF5OHgvQz7GHOw@mail.gmail.com"
type="cite">
<div dir="ltr">Thanks Leonardo!
<div><br>
</div>
<div>Nick</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On 25 November 2013 15:30, Leonardo
Testi <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:ltesti@eso.org" target="_blank">ltesti@eso.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="auto">
<div>Hi Nick,</div>
<div> I support what Al said already. We discussed
this on Friday afternoon and we agree that if the
new location meets the min distance requirement from
the antenna, then it is fine. </div>
<div><br>
</div>
<div>We concluded that we cannot really propose a
sensible location on the ground from several
thousand km. We thus support your suggested
location.</div>
<div><br>
</div>
<div>Cheers,</div>
<div class="im">
<div><br>
</div>
<div>Leonardo<br>
<br>
Sent from my almostPhone</div>
</div>
<div>
<div class="h5">
<div><br>
On Nov 25, 2013, at 19:24, "Nick Whyborn" <<a
moz-do-not-send="true"
href="mailto:nwhyborn@alma.cl" target="_blank">nwhyborn@alma.cl</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>Given that this is sent so late I will
extend the deadline to 1400UT tomorrow to give
our EU colleagues time to react.
<div><br>
</div>
<div>Cheers, Nick.<br>
<br>
On Monday, 25 November 2013, Nick Whyborn
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div dir="ltr">Hi,
<div><br>
</div>
<div>I spoke with Al on Friday but was
not able to reach Leonardo. However,
Al informed me that this was discussed
in their regular coordination meeting
and that he does not know of an
objection to siting the weather mast
between 60 and 80m SW of P413.
Therefore, I am proposing the UTM
coordinates</div>
<div><br>
</div>
<div>x = 634286, y = 7461559<br>
</div>
<div><br>
</div>
<div>If anyone objects to this proposal
they should do so before 0000UT on
tomorrow Tuesday 26 November. Assuming
no one objects then Ryu will ask NA
Site to proceed.</div>
<div><br>
</div>
<div>Cheers, Nick.<br>
<br>
On Tuesday, 19 November 2013, Nick
Whyborn wrote:<br>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr">
<div>... siting the weather
station SW of pad P413 with the
following approximates coords:</div>
<div>x = 634286, y = 7461559<br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div><br>
<br>
<div>On 14 November 2013 13:56,
Nick Whyborn <span dir="ltr"><<a
moz-do-not-send="true">nwhyborn@alma.cl</a>></span>
wrote:<br>
<blockquote style="margin:0px
0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr">I spoke with
Richard Hills about this.
<div><br>
</div>
<div>The drawing from
Rodrigo sent on Nov 7
shows the weather mast
position as requested 2-3
years ago - it is about E
from the pad P413 which is
at the end of the NE arm.
The drawing of the AOS
showing the present
location of P413 is
attached - P413 is in the
top right corner. <a
moz-do-not-send="true"
href="https://maps.google.com/maps?q=-22.951587,-67.691431+%28P413+ALMA+AOS+NE+arm%29&t=h&z=16"
target="_blank"> This
link shows the pad in
relation to the track
which joins the Paso
Jama road on google maps</a>.</div>
<div><br>
</div>
<div>Back then Thijs was
requesting a gate house on
this track and weather
mast was to be sited to
provide CCTV surveillance
of the road and gate
house. Anyway, the gate
house idea never made it
into the scope so there is
no longer any reason that
I am aware of of siting
the weather mast there. </div>
<div><br>
</div>
<div>Rodrigo's question is
can we move it back to be
closer to the pad P413
where the power and FO
cable is to avoid digging
an unnecessarily long 420
m trench. The only
requirement that Richard
can think of for the new
location is to maintain a
minimum distance from the
antenna to avoid it
disturbing the wind
velocity measurement.
According to the Vaisala
site ideally the minimum
should be the greater of
150 m or 10 x the height
of any obstacles (I wonder
if <b>any</b> of our
weather stations comply
with that requirement?).
Anyway, applying that
would site the mast about
200m from the pad and for
access reasons I would
think the best site would
be near to the pad access
road (not the new road
which I does not exist on
the google image). So any
convenient location
roughly 200m from the pad
P413 and say 5 - 10 m from
the N-E road would be my
suggestion. If Richard or
others indicate a smaller
spacing between pad and
weather station is
acceptable then that is
also fine by me.</div>
<div>
<div><br>
</div>
<div>Does anyone have
another suggestion?</div>
<div><br>
</div>
<div>Cheers, Nick.
<div>
<div>
<div><br>
<div>On 7 November
2013 09:45,
Rodrigo Torres <span
dir="ltr"><<a
moz-do-not-send="true">rtorres@nrao.cl</a>></span> wrote:<br>
<blockquote
style="margin:0px
0px 0px
0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div
bgcolor="#FFFFFF"
text="#000000">
<div>Dear
Joaquin:<br>
<br>
Yes, that´s
the idea, move
the weather
station mast
MS 413, closer
to PAD P413.<br>
<br>
I attached
drawing where
you see the
layout of
trench we
should do,
more than 420
meters.<br>
<br>
Regards,<br>
<br>
Rodrigo Torres
<div>
<div><br>
<br>
On 11/6/2013
8:17 PM,
Joaquin Penroz
wrote:<br>
</div>
</div>
</div>
<div>
<div>
<blockquote
type="cite">
<div>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Dear
Rodrigo :</span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Just
to clearly
understand
your request.</span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">What
you are asking
is, if we can
move the
weather
station mast
MS413, closer
to PAD P413 ?</span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Please
confirm, since
all these
locations
where
extensively
reviewed and
finally
defined by</span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">Richard
Hills last
year and I
shall ask ALMA
Science about
an eventual
location
modification.</span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)"> </span></p>
<p><span
style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(31,73,125)">All
the best …</span></p>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
<br>
<br>
-- <br>
Dr Nick Whyborn<br>
ALMA Array Lead Engineer<br>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
Dr Nick Whyborn<br>
ALMA Array Lead Engineer </div>
</blockquote>
<br>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Ryusuke Ogasawara, PhD
Project Manager, Joint ALMA Observatory
Alonso de Cordova 3107 Ofc.129, Vitacura, Santiago
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="TEL:+56">TEL:+56</a> (2) 2467 6132 CEL:+56 9 7767 6591
E-mail: rogasawa @ alma.cl
</pre>
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