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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We will not be installing a VLITE formatter this week. We will install two next week, (#6 and #7)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Steven
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> Vlite-external [mailto:vlite-external-bounces@listmgr.nrao.edu]
<b>On Behalf Of </b>Thomas Wilson<br>
<b>Sent:</b> Wednesday, July 30, 2014 6:38 AM<br>
<b>To:</b> vlite-external@listmgr.nrao.edu<br>
<b>Subject:</b> Re: [Vlite-external] VLITE data<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sincere congratulations to all!<br>
Tom Wilson<o:p></o:p></p>
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<p class="MsoNormal">On 7/29/2014 11:51 PM, Tracy Clarke (Foreign National) wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi All, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The data are now spectacular! The data on 3C273 are really much cleaner than and I had seen before. Below are the delay solutions<o:p></o:p></p>
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<p class="MsoNormal">for the 3C273 before Walter put them in VLITE. We saw beautiful phase wraps before the delays were corrected then the next scan <o:p></o:p></p>
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<p class="MsoNormal">everything was smooth. <o:p></o:p></p>
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<p class="MsoNormal"><br>
I've been looking at some of the VLITE data now in AIPS. I see a repeating signal that comes in every 4 minutes. Would that be
<o:p></o:p></p>
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<p class="MsoNormal">the site radio identifying itself? I see the drop in the amplitude of the data across all channels at the same time stamp as the bright RFI is seen<o:p></o:p></p>
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<p class="MsoNormal">in a few channels. In my WIDAR data from the VLA earlier this year I had seen the same 4 minute time scale drops, a good diagnostic to keep in mind I guess.<o:p></o:p></p>
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<p class="MsoNormal">I know the time stamps to within 2s so if someone knows something that has a 4 minute known signal I can check timing.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Walter and I have both made images of 3C273, and are happy to report it appears to be a point source (image attached). I have something like 140:1<o:p></o:p></p>
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<p class="MsoNormal">dynamic range in the first image (I think Walter got higher). For this image there is no self-cal applied but I did calculate and apply the delays for the antennas since this was prior to Walter putting them in. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Once we have some more data in hand we can look in more detail at the amplitudes in the two polarizations since we have been seeing some<o:p></o:p></p>
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<p class="MsoNormal">evidence of different levels for at least one of the antennas (ea6).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thank you NRAO for throwing all the big guns at this and Mike and Walter for bringing the fringes back. Let the games begin!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Cheers,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Tracy<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><img width="906" height="526" id="_x0035_3850806-fdab-4fad-b2e2-7376cd1a40e0" src="cid:image001.jpg@01CFABD3.6D78DBC0"><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><img width="905" height="793" id="d375d322-03b4-453b-9fe4-e02f8be88ee4" src="cid:image002.jpg@01CFABD3.6D78DBC0"><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Tracy Clarke <o:p></o:p></p>
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<p class="MsoNormal">------------------------------------------------<o:p></o:p></p>
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<p class="MsoNormal">Research Astronomer<o:p></o:p></p>
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<p class="MsoNormal">Remote Sensing Division<o:p></o:p></p>
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<p class="MsoNormal">Naval Research Laboratory<o:p></o:p></p>
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<p class="MsoNormal">4555 Overlook Ave SW<o:p></o:p></p>
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<p class="MsoNormal">Washington, DC 20375<o:p></o:p></p>
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<p class="MsoNormal"><a href="mailto:tracy.clarke.ca@nrl.navy.mil">tracy.clarke.ca@nrl.navy.mil</a><o:p></o:p></p>
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<p class="MsoNormal">(tel) 202-404-4297<o:p></o:p></p>
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<p class="MsoNormal">(fax) 202-404-8894<o:p></o:p></p>
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<p class="MsoNormal">------------------------------------------------<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><br>
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<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Vlite-external mailing list<o:p></o:p></pre>
<pre><a href="mailto:Vlite-external@listmgr.nrao.edu">Vlite-external@listmgr.nrao.edu</a><o:p></o:p></pre>
<pre><a href="https://listmgr.nrao.edu/mailman/listinfo/vlite-external">https://listmgr.nrao.edu/mailman/listinfo/vlite-external</a><o:p></o:p></pre>
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<br>
<o:p></o:p></p>
<pre>-- <o:p></o:p></pre>
<pre>phone 202-767-4474<o:p></o:p></pre>
<pre>cell 703-347-2938<o:p></o:p></pre>
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