MMA Imaging and Calibration Group

Minutes for meeting Tuesday, 6 June 2000 at 4pm EDT.

Date: 6 June 2000

Time: 4:00 pm EDT (2:00 pm Socorro, 1:00 pm Tucson)

Phone: (804)296-7082 (CV SoundStation Premier Conference phone).

Past minutes, etc on MMA Imaging and Calibration Division Page

Minutes

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News. -Wootten

We are supposed to think about dividing up the construction project--what do we want and what do we really not want. Some thoughts:

  • Configurations should be decided by then. There may still be issues with the larger configuration but this is a joint area, IMHO.
  • There will continue to be imaging issues. I forsee ongoing simulation probably with AIPS++ as the array gets better and better defined.
  • Water vapor radiometry. While EU is constructing a Mark II 183 GHz radiometer, which may go on the prototypes or not (I haven't had an answer), OVRO, the VLA and probably BIMA will be experimenting with working 22 GHz systems. It seems to me that a useful split here would be hardware to Europe and algorithms/application to the US.
  • Site operations will become more under the aegis of Division 2, site development, and I presume will be subsumed there in the construction phase, though we should still monitor and analyze data.

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    SSR Meeting

    Lucas sent out an agenda:

    Agenda for phone meeting on 2000-06-06 16h UT

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  • 1 - Final status of Memo 293.
  • 2 - Summary of the work initiated in Garching in May 15-19 on Use Cases.
  • 3 - Requirement lists: status on each area.
  • 4 - Discuss Mel's idea of test projects to validate the requirements (see his e-mail of 2000-05-09)
  • 5 - Discuss the points raised earlier by Steve on blanking and flagging/ correlator data processing

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    Japan Involvement -Wootten

    See Letter to ASAC from Bob Brown.

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    Configurations - Yun, Kogan

    Min has prepared the agenda page. The meeting is on 7 June.

    Michiel provided some simulations. I have lost his jpeg momentarily.

    Leonia reports: I have designed the 14km configuration minimizing sidelobes with the topography constraint. The configuration has a donut type (width 0.25) Sidelobes of snapshot is ~0.06. Without topography constraint it was 0.056. The plots of the configuration with UV coverage, of beam and configuration on the terrain are available at PS format.

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    Prototype Antenna, Calibration -Mangum

    Upcoming Reviews: Test Interferometer plans, Antenna PDR (June 19-22). Mangum calibration protomemo.

    The test interferometer plan does not currently include a WVR in the plan.

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    Action Items 6June2000

    DECISION: Configurations--where are we? Next phone meeting plans...

    DECISION: Implementation of 183 GHz WVR?

    DECISION: Are the specs for a nutating secondary correct?

    DECISION: What is the total power specification on the ALMA?

    DECISION: What is the effect of 1/f noise in the HEMT amplifiers of SIS receivers upon our ability to combine total power and interferometric images into a faithful representation of the sky?

    Year 2000

    January February March April
    May June July August
    September October November December

    May, 2000

    May, 1-2 Site Development Discussions Garching, Germany
    May 15-17 Test Interferometer Planning Tucson, Arizona

    June, 2000

    Jun, 12-16 2nd IRAM Millimeter Interferometry Summer School IRAM Grenoble, France
    June 19-20 Vertex Antenna PDR Duisburg, Germany
    Jun, 20-27 7th Synthesis Imaging Summer School Socorro, USA
    June 21-22 EIE Antenna PDR Venice, Italy

    July, 2000
    August, 2000
    September, 2000
    October, 2000

    October 13 ACC Meeting Paris, France

    November, 2000
    December, 2000
    Send comments to <tcontini@eso.org>
    Last modified: Tue Feb 22 09:55:07 MET
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    Travel

    AW -> Socorro 20-25 May 2000 ------