ALMA/US Imaging and Calibration Group

Agenda for meeting Tuesday, 12 Dec 2000 at 4:00pm EST.

Date: 12 Dec 2000

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

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

Past ImCal minutes, etc on MMA Imaging and Calibration Division Page

"NSF is also pleased to be playing a leadership role in developing the international partnership for ALMA--the Atacama Large Millimeter Array." --remarks of Dr. Rita Colwell, Director, NSF, at the Dedication of the Green Bank Telescope, August 25, 2000.

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Agenda

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News -- Wootten

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Use Cases -- Mangum

The SSR meeting Minutes are available.

We should discuss some of these use Cases in more detail. A list is available. Let us begin with going over:

Observe Single Field

Reduce Single Field

Setup Single Field

A. Wootten to restart the matter of special observing modes.

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ASAC Meeting -- Wootten

The ASAC meeting occured 11 December. The agenda was the ASAC agenda.

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Site Visit -- Radford, Butler

Simon and Bryan are at Chajnantor. I attempted to come up with a list of possible problem pad locations for the 3km 1.6km and 0.8 km and Spiral array. Hopefully, these sites are, in fact, OK.

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Report - Wootten

Another monthly report must be assembled!!

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Configurations

Koh-Ichiro Morita has made a summary of my recent imaging simulations for ACA. The summary may be seen at this URL. Any comments or questions are welcome.

Brief summary:

  • 1. Imaging simulations show that it is hard to obtain significant improvement by simple adding of ACA data with ALMA data.
  • 2. I have proposed the modified method (method-2) to use smoothed total power data instead of raw total power data from 12 m antennas. Improvements of imaging quality have been obtained by this method.
  • 3. Imaging simulation using the method-2 shows that ACA with 6 m antennas would provide better performance on wide field imagings than that of with that with 8 m antennas.

    Please read Advance of Alma simulation at IRAM by F. Gueth, S. Guilloteau, R. Moreno and J. Pety considering the performance of ALMA with the ACA.

    The CLEAN and difference results for B arrays for all three declinations and all five test images, with directly comparable grey scale difference images, have been posted on my website, available under Steven's Lair. This now shows CLEAN and difference images for all declinations and test images, with the grey scale difference plots directly comparable. Opinins?

    Al's updated minutes of the teleconference are available .

    Any further thoughts on metrics??

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    Action Items 1 Aug2000

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

    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

    October, 2000

    October 13 ACC Meeting Paris, France

    November, 2000

    Nov 6-9 ALMA Photonics/Receiver Tokyo, Japan
    Nov 6 ALMA SSR Meeting Teleconference
    Nov, 13 ALMA SAC Meeting Teleconference
    Nov 15-16 Vertex Antenna CDR Duisburg, Germany
    Nov 28-29 EIE Antenna PDR Venice, Italy

    December, 2000

    Dec 8 Project Book Frozen Executive Fiat

    End of Second Millenium A. D.

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

    Butler

    oct 22-29 | pasadena (annual dps meeting)

    nov 3-7 | CV (readhead meeting)

    nov 12-19 | marrakech, morocco (IAU site testing meeting)

    Radford

    nov 5-7 | CV (readhead meeting) ------