MMA Imaging and Calibration Group

Minutes for meeting Mon, 29 November 1999 at 4pm EST.

Date: 29 November 1999

Time: 4:00 pm EST (2:00 pm Socorro, 2:00 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

From the ASAC meeting earlier today, and the Division Heads meeting.

ALMA ImCal Cost Estimates due tomorrow--any changes from the baseline plan?

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ALMA SW-SSR Group and Exploder - Glendenning

A summary of 17 Nov phone meeting is at Robert's Minutes Page.

More generally ALMA SSR is the place to look for ALMA SW-SSR stuff. Feel free to join the exploder discussions.

The next meeting will be on Monday Dec 13th 17h UT for members only please.

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Configuration PDR - Min, Butler, Wootten, Radford, Kogan

Simon identified some goals:

1) Basic configuration parameters: number (5), sizes (150 m, 450 m, 1100 m, 3 km, 10 km).

2) Configuration styles: rings, donuts, sprials, etc.

3) Reconfiguration operations: continuous, batch, hybrid.

4) Quality metric for comparing different possibilities: sidelobe level, dynamic range, fidelity, etc.

5) Test images for comparing different possibilities. Should represent full range of science goals.

6) Topographic (or political) constraints on siting.

PDR organization -- Who will be the outside representatives? European?

Min has formulated a plan.

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SAC Meeting - Wootten

First Joint ALMA Science Advisory Committee Meeting 29 Nov 1999.

SAC members have been appointed.

Agenda:

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ALMA Science Advisory Committee Meeting

Date: 29 November 1999

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Agenda for SAC Meeting

First Joint ALMA Science Advisory Committee Meeting 29 Nov 1999.

SAC members have been appointed.

Probable topics for discussion:

Urgent Procedural Items

1) SAC Charter (ACC asked SAC to produce it)

2) Schedule for meetings-- next meeting 13 Dec.

3) Japanese/Chilean representation

Old Business

4) Items from 9 Oct meeting in D. C.:

Ed Churchwell's minutes of that meeting may be found at:

the usual place. *Frequency Band priorities

*Long baselines - configurations (Feb PDR)

*Short spacings

*Polarization

* Chopping Secondary

* Correlator Issues

New Business

5) Report from the 1999 Chajnantor Field Campaign - Wootten, Yun

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ALMA Correlator - Myers

Steve's memo can be printed from his WWW Page.

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Action Items 15November99

DECISION: Configurations--where are we? Feb meeting plans...

DECISION: 183 GHz or 22 GHz phase correction?

DECISION: Is a nutating secondary necessary?

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?

MEETINGS: SAC meeting 29 November 1999 for members only.

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Travel

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