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VLBI teleconference, Thursday 27 March 2014

02:30 UT - 10:30 Perth, 13:30 AEST, 15:30 New Zealand

ACT:02 6276 2888
NSW:02 9490 8088
Vic:03 9545 8088
WA:08 6436 8688
SA:08 8305 0688
Tas:03 6232 5088
International +61 2 6276 2888

Meeting ID: 4698

Chair: Tasso Tzioumis

Attendance: Attendance: Cormac Reynolds, Hayley Bignall (Curtin); Tasso Tzioumis, Chris Phillips, Phil Edwards, Jamie Stevens (CASS); Shinji Horiuchi (ATDSCC); Jamie McCallum, Simon Ellingsen (UTas); Oleg Titov(GA)



  • Debrief Feb - Mar 2014 LBA sessions
  • Telescope issues
    • UTAS
    • ATNF
    • Tid
    • South Africa
  • SOC remote observing
    • ATNF
    • UTas
  • Monitoring
  • Disks
  • Correlator
  • Real-time fringe tests
  • Tests
    • 32 GHz observing?
    • Xcube testing
    • Other testing
  • Next LBA session(s)
  • Short LBA sessions
  • 3 April
  • 30 April
  • June 2014 - long sessions
    • 2-5 June
    • 11-14 June
  • Upcoming RadioAstron observations
  • e-VLBI developments/demos
  • Future plans: LBA wide-banding?
    • Xcube tests
    • telescope issues
    • correlator issues
    • e-VLBI
  • Organise scientific meeting in Northern Territory in 2014/2015 ?
  • AOB

Actions arising


  • LBA data archive consolidation and copy at CASS. (CASS, Curtin)
    • LBA data archive. Need ATNF disk space (Chris,Tasso, Shaun) Continuing
  • ATCA phasing. Check performance and implementation (Jamie S, Richard) Updated
    • Definitely need >200 mJy calibrators. Stress in documentation. (ATNF)
    • Ask PIs to nominate phase-cals and check fluxes BEFORE scheduled observations (Phil, Jasmie S)
    • Extract phase-cals from Vex files and check at ATCA before run (Chris, Jamie S.)
    • Need at least 6 cycles for auto-phase = 30secs if 5sec integration.
      • Phase-impact on phase-ref and calibration? Phase jumps?
      • consult with Ojha re auto-phasecal for TANAMI (ATNF)
  • ATCA Tsys via CABB (CASS) Updated
    • Consult with Carrad and Sault about Tsys implementation on the CABB (Tasso)
  • Observer training and remote observing (Tasso) Continuing
  • Wiki logs (All) Continuing
    • Log transfers quickly to FTP area and/or Wiki (ALL) Continuing
    • Annual “best” wiki-log competition. To be judged by correlator at annual Ops meetings. (Cormac)
  • Pawsey centre access for VLBI and eVLBI (Chris, Cormac) Continuing
  • Linear to Circular polarisation conversion. (Chris, Richard, Cormac) Continuing
  • Monitoring “check-list” for ATNF telescopes (Chris, Jamie S) Continuing
  • For ATCA include in Wiki log: ref ant, pad, tied-array. Default ant03 on W104. (Jamie S, ALL observers)
  • Curtin Xcube testing. Unit installe at ASKAP. Commission. (Chris, Cormac, Tasso) Continuing
  • On-source info from ATCA. Fix cgi scripts (Chris) Continuing
  • DA role during LBA sessions (Phil, Tasso, Jamie S)
  • Procedures for raising Ho observers on Skype. Telephone? (UTas)
    • Implement lists on Skype and/or Wiki for observers(ATNF)
  • Get Ww FS log comments onto Wiki. Use UTas “floggit” script and automate? (Stuart, Chris, Jamie M.)
  • Fix recmon to track correct experiment name, especially due complex recordings for Ellingsen (Chris, Jamie S)
  • List Mk5 rtfc times for each observation from schedules (Cormac, Chris)
  • RadioAstron schedules and check setups (Chris)
  • Use new numbers for ATCA (4077 for DA; 4078 for Observer)
  • For wideband systems more efficient to stop data recording in slews/stops AND better effieciency in correlator.
    • Adopt Mk5 systems?
  • Cd upgrades
    • DAS replacement by dBBc (UTas).
    • L-band sensitivity measurements. (UTas)
  • Tid tests for JPL DAS and Mk5c recorder
    • Let JPL know re VDIF format (Chris)
    • Web monitoring? Ports?
  • ASKAP VLBI monitoring (Chris, Jamie S)
  • Xcube testing (Chris)
  • CABB wide-band proges?
    • Email Tim Bateman and get report (Tasso)


  • Cd drive-PC. Fix in short-term. Replace long-term? (UTas)
  • Ho, Cd need setup information early. Problems when schedules are late. (Phil, UTas)
  • Ensure correct wraps and limits are supported in Vex, especially for At and Mp. (ATNF, Cormac)
  • Setup of circ pol hybrids at Mp. Need to tweak (ATNF)
  • Tsys logs from Mp may be wrong if polarisation hybrid not setup properly. Need to average the 2 channels (ATNF)
  • Mp L-band and X-band low power and no atten to adjust. Check with Jock (ATNF)
  • Pks update of documentation. Polarisations are usually swapped. (ATNF, JER)
  • Pkvsi1 and pam-store disks dead! Check re backups (ATNF)
  • Antenna positions at ASKAP. May need geodetic run for new antenna. (ATNF, JER)
  • Train/qualify more PIs for ATNF remote observing (ATNF)
  • Investigate more remobs for UTas telescopes (UTas, ATNF)
  • Streamline monitoring. Check ssh tunnel setups. (Jamie + Jamie, Chris)
  • Disks to Cd )Hayley)
  • grid-ftp on Cortex. Move to new systems (Cormac)
  • Supercomputer for DiFX. Approved. Initiate port. (Cormac)
  • Coordinate data transfers so full experiments are ready for correlation (All, Hayley)
  • Liaise with Ojha re auto-pcal in his observations (ATNF)


  • Plan for replacements of old LBA DAS and some failing recorders.
    • Plans to replace at each station (UTas, CASS)
  • VLBI science meeting in 2015 at Darwin/Katherine (NB. Now in 2015!!)
    • Setup LOC, SOC (Tasso, Jim)

Next meeting: TBD

lbaops/telecon2014mar27.txt · Last modified: 2015/12/18 16:39 by