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Contact Information

  • 2008-2-20 14:30 UT Please check your local time; it may have changed!
  • Duration: 1 hr
  • USA Toll Free Number: 877-874-1919
  • Toll Number: +1-203-320-9891
  • Passcode: 185064
  • Leader: Al Wootten
  • Attendees:


  1. Old Business The enhanced Agenda from last meeting is available. Science IPT notes from last month's telecon are attached to the bottom of the agenda.

Tranporters approach the OSF

See other images and animations. See other images.

  1. New Business--Project news/updates (Hills, Peck)
  2. Current Science IPT Schedule. Current Operations Schedule. very high level summary Schematic IPS. (2007 Novemer 30 for all these except the high level schematic, which is current!)
  3. Directories

Science IPT Group Activity Reports

Please include your Group Activity Report here (How to Enter Your Report), or email it to AlWootten

Project Scientists

  1. Science IPT -
    • Change Control Board items, other technical concerns (Hills)
    • ATF: (Peck)
      • Summary
      • Goals: (1) Get software working (2) Training personnel and developing procedures
      • Spectral-line pointing needs to be available in Q1 2008 for single dish testing in Chile.
      • The current schedule is below. Please let Alison and Debra know if anyone has any issues with this. During the current period foci of interest include further understanding of the behavior of the Line Length Corrector, to measure the baseline correctly and to begin interferometric pointing.
Week Event
Feb 17
Peck, Brogan, Remijan
Feb 24
Peck, Remijan, Martin
Mar 2
Remijan, Reid, Nyman
Mar 9

  • OSF
Week Event
Feb 15
Emerson VxRSI antenna contractor handover testing begins 4 Feb

  1. Next meeting is on March 19th (14:30 UT). April 16th for the following month.
  2. Astronomer Outreach: ESO Newsletter New ESO Messenger with Antenna article, New ESO ALMA News New NRAO Newsletter appearing soon. NAOJ News. NRAO ALMA Calendar

Emerson/Laing/Vila-Vilaro -- Instrument Scientists

  • PSI at the ATF: Schedule above; see report in attachments.

Richard Hills, Alison Peck, Robert Laing -- Commissioning and Science Verification

  • Commissioning and Science Verification

Holdaway, Conway -- Configuration Group

  • Holdaway's description of the development of the design for the extended ALMA configurations, rev 2 for edm.
  • Eduardo Donoso and Simon Radford determined the separation between the planned ALMA antenna station A104 and the existing CBI generator plant is about 50 m. Tony Readhead and Radford agree this separation should be adequate for CBI operations and maintenance.
  • And then there were four... Array layout on the high site; weather station locations have orange dots. PDF. The Technical specifications and SOW for the IFB for the AOS Road network design have been completed. A design for road and fiber network at the high site is to be bid for construction shortly. Design of the extended array is complete; bids for antenna pad construction are out.
  • Final configuration design. We continue to assess performance (see imaging, below). We continue to assess configuration performance.
  • New <4km Configuration approved Passed CCB.
  • Proposed ACA Configuration approved.
  • ArrayCenter shows photos of the region of the center of the Array.

Steve Myers/Rob Reid (Mark Holdaway)-- Imaging

  • CASA Simulator Report
    • The Library of standard ALMA images for simulation is available.
    • Fidelities over 104 have been achieved for 4 hour noiseless "observations" of the M31 HII region, using deep cleans with a tightly constrained support region. uv fidelities for a set of ALMA configurations. The input model was scaled to match the resolution of each configuration, so to first order the curves should be horizontally shifted copies of each other. The upward trend with increasing configuration number is probably due to clean's primary beam correction neglecting blockage by the subreflector, which can be easily fixed.
    • Dirty beam images have been made for all of the ALMA configurations, for both snapshots and 4h exposures at a variety of declinations.
    • CASA simulation wiki with examples
    • Bojan Nikolic is using the simulator to make u-v data and maps when investigating the effects of atmospheric phase and, in the future for trying out phase-correction techniques.
  • Pointing selfcalibration for mosaics

Jeff Mangum -- Calibration

  • Response to ASAC comments
  • Pointing Design document now drafted.
  • Calibration Plan: Current version of the calibration plan and associated documents ("examples", "roadmaps", "matrices", etc.) posted. Comments welcome.
  • Calibration Examples: The "meat" of the Calibration Plan. Review of these documents nearly complete, some need updates.
  • Ancillary Calibration Devices: Documents which describe the weather station and temperature profile technical specifications have been developed. Initial purchase documentation for (P,T,RH,Ws,Wdir) measurement devices has been made by Leonardo.

Robert Lucas -- SSR

  • Latest SSR meeting (2007-12-12).
  • Regular testing of subsystems and integrated system at the ATF.(see SSR link above)

Michiel Hogerheijde -- DRSP

  • While I work on including the author responses to the referee comments, the DRSP 2.0 web site continues to be password protected. If you would like access (keeping in mind that the author responses have not been added yet) use: username=review and password=chajnantor! (including the exclamation mark).

L.-A. Nyman -- Site Characterization

Remijan, Markwick-Kemper -- ALMA Working Group on Spectral Line Frequencies

Science Corner:


Official JAO Calendar

ALMA Events of Interest

(see also Al's ALMA Biweekly Calendar)
Day Date Time Event location details
Jan 15
ESAC face-to-face meeting
Jan 18
ANASAC telecon
Jan 23-24
Nutator CDR
Feb 1-2
ASAC face-to-face
Feb 7-8

Upcoming Meetings

[[ ][North American URSI]] meeting Jan 3-6 2008, Boulder Presentations

AAS meeting Jan 7-11 2008, Austin, Tx (NRAO/ALMA booth)

IAU Symposium 251 Organic Matter in Space Feb 18-22, Hong Kong

The Cosmic Agitator - Magnetic Fields in the Galaxy 2008 March 26-29 Lexington.

29th URSI General AssemblyChicago, Illinois, USA, 9-16 August 2008. Abstracts due 2008 Jan 31

See also NAASC listing

-- AlWootten - 12 Jan 2008

Topic attachments
I Attachment Action Size Date Who Comment
ATF_Science_activities_DEC07.pdfpdf ATF_Science_activities_DEC07.pdf manage 84 K 2008-01-12 - 14:35 AlWootten  
PSreport_to_Board_07NOV.pdfpdf PSreport_to_Board_07NOV.pdf manage 17 K 2008-01-12 - 14:23 AlWootten PS Report to Dec Board meeting
Submillimiter_radomes.pdfpdf Submillimiter_radomes.pdf manage 488 K 2008-01-16 - 09:50 AlWootten Material relevant to rf membrane window
Topic revision: r8 - 2010-08-02, ToddHunter
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