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Re: Fringes from Australia-Japan VLBI test

From: <Chris.Phillips_at_email.protected>
Date: Thu, 15 Oct 2009 10:31:00 +1100

Or we could send the data to Japan to correlate :-)

But I think the data transfer issues are much more or a problem now
than data format.

Cheers
Chris

------------------------------------------------------------
Chris Phillips
CSIRO ATNF eVLBI project scientist
Office: (+61) (0)2 93724608 Mobile: (+61) (0)439487601

On 15/10/2009, at 10:28 AM, Steven Tingay wrote:

>Hi Tasso,
>
>Note that if proposals are accepted, they have to be supportable at
>the correlator in a routine way. This will not be possible until the
>format and disk media issues (or data transfer issues) are sorted out.
>So, this bears a little bit of thought before progressing too far.
>
>I agree that proposals in the system will be the impetus to sort out
>the issues, but a bit of forethought will ease the way. So, I suggest
>we think about some formal tests to establish a routine data path.
>
>Cheers, Steven
>
>On Thu, Oct 15, 2009 at 7:15 AM, Tasso Tzioumis <Tasso.Tzioumis_at_csiro.<!--nospam-->au
>>> wrote:
>>Hi Simon,
>>
>>Great news. Well done...
>>And I think you are right and it is the first time the LBA and VERA
>>antennas
>>have observed together.
>>
>>It will be great to progress beyond simple tests. As far as the LBA
>>is
>>concerned we will be happy to see proposals in the system that also
>>require
>>the JVN. If I recall correctly, under the APT guidelines the same
>>proposal
>>should go to both networks with all the scientific and technical
>>details. If
>>they both approve it, then the respective schedulers can coordinate
>>for
>>time.
>>
>>I appreciate that there are technical issues to solve like formats,
>>but I
>>still think the key is good proposals into the systems.
>>
>>I look forward to working in this mode.
>>
>>Cheers
>>Tasso
>>
>>On 15/10/2009, at 1:40 AM, Simon Ellingsen wrote:
>>
>>>Dear LBAers
>>>In late May Hobart participated in a 2 hour test
>>>observation at the
>>>end of a JVN methanol maser VLBI observing session. We observed a
>>>number of continuum calibrators and equitorial methanol maser
>>>sources
>>>with a 4 MHz bandwidth and centre frequency of 6.668 MHz. Hobart
>>>observed dual polarization, while the Mizusawa VERA antenna and the
>>>Yamaguchi 32m recorded LCP only. Mareki Honma arranged for
>>>conversion
>>>of the recorded disk-based data from one of the K5 formats into
>>>Mark5B, while at Hobart we recorded using the standard cdisko
>>>recorder, but with data saved in Mark5B format rather than the
>>>standard LBA format.
>>>
>>>After lots of help from Chris Phillips to get the
>>>DiFX
>>>input file
>>>correct, I have finally been able to get the first hour for the
>>>Hobart-
>>>Mizusawa baseline correlated using version 1.5 of DiFX. Over that
>>>period we observed two calibrators and two maser sources and we have
>>>fringes from J0609-1542 and the two methanol masers G188.95+0.89 and
>>>G213.70-12.6 (Mon R2), which are shown in the attached postscript
>>>file.
>>>
>>>I think that we have previously had Australia-Japan
>>>fringes
>>>in
>>>recent eVLBI experiments and 20 years or so ago in some Mark II
>>>experiments (perhaps also some VSOP experiments). However, I think
>>>that this is the first time we have had fringes to any of the VERA
>>>stations from Australia?
>>>
>>>I think it would be good to arrange a full-scale
>>>Australia-Japan
>>>observation in the not to distant future, as I'm sure that there
>>>are a
>>>range of experiments both maser/line and continuum which could
>>>benefit
>>>from long N-S baselines?
>>>
>>>Regards
>>>
>>>Simon
>>>--
>>>Simon Ellingsen : Senior Lecturer Physics & Astronomy, University of
>>>Tasmania
>>>Currently : Humboldt Experienced Research Fellow, MPIfR, Bonn
>>>email : Simon.Ellingsen_at_utas.<!--nospam-->edu.au
>>>WWW :
>>>http://fcms.its.utas.edu.au/scieng/physics/pagedetails.asp?lpersonId=681
>>>Phone : +49 (0)228 525 392 (work) +49 (0)1522 374 5728 (mobile)
>>>
>>><HOB_MIZ_FRINGES.PS><ATT00001.txt>
>>
>>----------------------------------------------------------------------
>>Tasso Tzioumis, Australia Telescope National Facility, CSIRO
>>Location: Cnr Pembroke & Vimiera Rds, Marsfield, NSW, 2122, AUSTRALIA
>>Post: PO Box 76, Epping, NSW 1710, AUSTRALIA
>>Phone: +61 2 9372 4350 Fax: +61 2 9372 4450 or 4310
>>Email: Tasso.Tzioumis_at_csiro.<!--nospam-->au
>>URL: http://www.atnf.csiro.au/~atzioumi/
>>----------------------------------------------------------------------
>>
>>
>>
>>
>
>
>
>--
>* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>Professor Steven Tingay
>
>Premier's Fellow
>
>Deputy Director
>ICRAR
>
>Deputy Director
>Western Australian Radio Astronomy Centre of Excellence
>
>Director, Science and Operations
>Curtin Institute of Radio Astronomy
>
>Department of Imaging and Applied Physics
>Curtin University of Technology
>Bentley, Western Australia
>Australia
>
>Street address:
>Brodie Hall building
>1 Turner Ave
>Technology Park
>Bentley 6102
>Western Australia
>
>Email: s.tingay_at_ivec.<!--nospam-->org OR s.tingay_at_curtin.<!--nospam-->edu.au
>
>WWW: http://astronomy.curtin.edu.au
>
>Phone: +61 (0)8 9266 3516
>
>Mobile: +61 (0)425 771 856
Received on 2009-10-15 10:31:21