Phone:

Meeting ID: 8211

Chair: Tasso Tzioumis

Attendance: Cormac Reynolds, Hayley Bignall, John Morgan (Curtin); Tasso Tzioumis, Chris Phillips, Phil Edwards (CASS Marsfield); Brett Reid, Jamie McCallum, Joe Dawson (UTas); Jamie Stevens (CASS Narrabri); Oleg Titov (Geoscience Australia)

Apologies: Steven Tingay (Curtin)

Agenda

• Debrief from last LBA session and tests
  • ATNF
  • Tid
  • UTas
  • NZ
  • Hart
  • Curtin

• Planning for next VLBI session
  • 26 April - 2 May 2012
    • Schedules
    • Telescopes
    • Observers
  • General comments

• Reports from observatories & correlator(s)
• News from AuScope

• e-VLBI developments/demos
  • official e-VLBI demo to Hobart
  • e-VLBI to Korea
  • ASKAP network?

• Future of Data transfer?

• Report from LBA annual meeting, February 2012
• Report from VLBA time allocation meeting

• Next DIFX Developers Meeting
• Mixed Band Testing
• LBA monitoring issues
  • Ceduna GPS-maser data

• Review of Actions from last meeting 13 December 2011

• Any other issues

Actions arising

CARRIED FORWARD/UPDATED/CONTINUING

• Consolidation of the LBA Archive to include all ATNF + Swinburne + Curtin correlated LBA data. Should also add in eVLBI output data. Maintain complete archives at Curtin and ATNF (ATNF/Curtin)
  • ATNF to develop online access to this archive (ATNF) - Continuing
  • Arrange ATOA on-line access to archive (ATNF)
• Copy LBA data archive from Curtin to ATNF (Curtin, Chris) continuing
• Transfer of LBA archive from Curtin to ATNF needs route. Firewall issues? (Chris, Shaun)

• Guidelines for phasing the atca more often during vlbi observations (ATNF) - to be revisited
  • Try automatic pcal via schedules on atca (Jamie S)
  • test time for K-band tied-array phase tests at ATCA (Jamie, Richard)

• Implement upgrade for programmable cable changes on VLBI DAS. (Chris, Jamie S) continuing
  • Contact Peter Mirtchin re DAS remote cabling changes via VSIC (Tasso)

• Investigate/implement mixed mode correlation (64 MHz & 4 x 16 MHz) at Curtin correlator (Cormac, Chris) continuing

• Proposal for VLBI with GMRT for next round (All) continuing

• Need to train observers for all antennas as more remote observing is anticipated (Tasso) continuing

• Investigate Rx for Methanol at ASKAP. Very desirable and usable. (Tasso)

NEW ACTION ITEMS

• CABB test version records no Tsys. Need to fix before LBA session. Consult with WEW.(Jamie)
• ATCA timing offset between DAS1 and DAS2 with Huygen's cable. Align before session (Jamie)
• VSIC needs rewiring before tests (Chris, Jamie)

• Large (hours) single data files in last session. Software written to split. Need to transfer split files (Chris)
• DASPRO needs changing on wiki to reflect current practice (Chris, Cormac)

• Need ASKAP data to Curtin for mixed mode correlator tests (Tasso, Chris)

• Problems at Ho due to power failure of UPS. May help to have better integration of observing during sessions (UTas, ATNF)

• Clock problems in Cd continuing. Need attention. (All)
  • Check finer sampling for GPS-Hmaser data (Brett)
  • Check with WEW re any H-maser issues in Cd (Tasso)
  • Email Anton Pavlenko in Russia re H-maser issues (Brett)
  • Organise Russian visit if necessary. (May also check MRO H-maser). (Tasso, Brett)
  • Compare Ho Russian H-maser- GPS with Cd results. Look at IVS data. (Brett, Oleg)

• Get Mk5 disks to AuScope stations for LBA session (ATNF)

• Brazil e-VLBI (Tasso)

• VPAK trnasfers. Sam Morrison till July 2012. Future? (Tasso)
  • Open Ho ports to VPAK (UTas)

• Organise next DiFX meeting in September (Chris)
• Participation in Haystack e-VLBI workshop 22-24 October (All)

• MWA is decommissioning XRAID chassis. Acquire some for spare and extra set at Narrabri (Chris, Jamie)

Next meeting: 23 April 2012