Re: Fringes from Australia-Japan VLBI test
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From: <s.tingay_at_email.protected>
Date: Thu, 15 Oct 2009 07:28:44 +0800
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/
>----------------------------------------------------------------------
>
>
>
>
Date: Thu, 15 Oct 2009 07:28:44 +0800
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 856Received on 2009-10-15 10:29:11