Fringes to Ceduna at L band
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From: <Chris.Phillips_at_email.protected>
Date: Fri, 22 Jun 2007 10:49:08 +1000 (EST)
Bounced message from John. Readable hopefully this time.
NB: If anyone thinks they cannot send email to vlbiobs, please send me an
email today with your email address and I will add a bulk request to IT
support (I can only add email addresses in such a way that those in
question will get two copies of emails)
Cheers
Chris
--------------------------------------------------------------------
Dear Brett and Aidan,
Congratulations again to you and everyone who made this happen. It's a
big advance for Australian VLBI and it opens the door to future
applications like broad-band feeds or dual frequency feeds. It will be
interesting to see what the extra baselines on V211 show. Probably they
will show a lot since they are much longer than any other baselines
available among the other telescopes.
cheers,
jd
On Fri, 22 Jun 2007, Brett Reid wrote:
>Hi All,
>There are some unsorted photos at:
>http://www-ra.phys.utas.edu.au/~breid/ceduna/Lband/?C=M;O=D
>
>Aidan calculated a systemp of 1200 Jy during a scan after we finished setting
>up. We are probably taking a hit in Tsys due to our 12 meters of RF cable
>between the LNA and the mix down package.
>
>Here is a message from Cliff Senkbeil regarding the Ceduna L-band mapping
>experiment he performed during the time before the current experiment, while
>Aidan and I had dinner.
>Cliff obtained 1400 Jy Tsys and the source being mapped is 200 Jy
>---------
>The beam of the experimental L-Band Receiver system at Ceduna has been
>mapped using
>Virgo A (or M087)
>(RA, Dec) [J2000] = (12h30m49.4s, +12d23m28s)
>
>Centre frequency = 1400 MHz
>bandwidth = 64 MHz
>
>IF1 = Left Circular Polarization
>IF2 = Right Circular Polarization
>
>Images of the beam can be found at:
>
>IF1 (LCP) 4x4 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif1_07172_1.jpg
>
>IF2 (RCP) 4x4 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif2_07172_1.jpg
>
>IF1 (LCP) 2x2 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif1_07172_2.jpg
>
>IF 2 (RCP) 2x2 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif2_07172_2.jpg
>
>The elevation of the scans was ~25 degrees, Azimuth ~ 300 degrees. The
>units of the color bar are cal height units.
>
>Cliff.
>-------
>
>Thanks Cliff for doing this on the couple of nights that you put in.
>Also thanks to Bev and Mark for getting all the stuff here we needed and
>everything else including lunch, when we needed it.
>
>Thanks to all others in Hobart for guidance in this test.
>
>Regards,
>Brett and Aidan.
>
>
>
Received on 2007-06-22 10:49:26
Date: Fri, 22 Jun 2007 10:49:08 +1000 (EST)
Bounced message from John. Readable hopefully this time.
NB: If anyone thinks they cannot send email to vlbiobs, please send me an
email today with your email address and I will add a bulk request to IT
support (I can only add email addresses in such a way that those in
question will get two copies of emails)
Cheers
Chris
--------------------------------------------------------------------
Dear Brett and Aidan,
Congratulations again to you and everyone who made this happen. It's a
big advance for Australian VLBI and it opens the door to future
applications like broad-band feeds or dual frequency feeds. It will be
interesting to see what the extra baselines on V211 show. Probably they
will show a lot since they are much longer than any other baselines
available among the other telescopes.
cheers,
jd
On Fri, 22 Jun 2007, Brett Reid wrote:
>Hi All,
>There are some unsorted photos at:
>http://www-ra.phys.utas.edu.au/~breid/ceduna/Lband/?C=M;O=D
>
>Aidan calculated a systemp of 1200 Jy during a scan after we finished setting
>up. We are probably taking a hit in Tsys due to our 12 meters of RF cable
>between the LNA and the mix down package.
>
>Here is a message from Cliff Senkbeil regarding the Ceduna L-band mapping
>experiment he performed during the time before the current experiment, while
>Aidan and I had dinner.
>Cliff obtained 1400 Jy Tsys and the source being mapped is 200 Jy
>---------
>The beam of the experimental L-Band Receiver system at Ceduna has been
>mapped using
>Virgo A (or M087)
>(RA, Dec) [J2000] = (12h30m49.4s, +12d23m28s)
>
>Centre frequency = 1400 MHz
>bandwidth = 64 MHz
>
>IF1 = Left Circular Polarization
>IF2 = Right Circular Polarization
>
>Images of the beam can be found at:
>
>IF1 (LCP) 4x4 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif1_07172_1.jpg
>
>IF2 (RCP) 4x4 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif2_07172_1.jpg
>
>IF1 (LCP) 2x2 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif1_07172_2.jpg
>
>IF 2 (RCP) 2x2 degrees
>http://www-ra.phys.utas.edu.au/~csenkbei/CedunaLBand/Beamif2_07172_2.jpg
>
>The elevation of the scans was ~25 degrees, Azimuth ~ 300 degrees. The
>units of the color bar are cal height units.
>
>Cliff.
>-------
>
>Thanks Cliff for doing this on the couple of nights that you put in.
>Also thanks to Bev and Mark for getting all the stuff here we needed and
>everything else including lunch, when we needed it.
>
>Thanks to all others in Hobart for guidance in this test.
>
>Regards,
>Brett and Aidan.
>
>
>
Received on 2007-06-22 10:49:26