NRAO Algorithms Working Group
Steven T. Myers
Last update: 22 Jan 2007
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The goal of the NRAO Algorithms Working Group (NAWG) is to have a general forum to discuss data-processing algorithms related issues of interest to NRAO scientists and software folks alike (independent of development platform or package). This is in response to the pressures of planning for the EVLA hard problems like wide-field/wide-band imaging as well as thinking about problems for ALMA and GBT. Furthermore, it is intended to be a focus for imaging, calibration, and related research (including modeling, statistics, etc.) discussion at NRAO. The NAWG is meant to be as observatory-wide as possible and I'm trying to solicit some participants from the various sites.
These meetings are meant to be mostly informal discussion with some scheduled presentations ("Short Topics" and "Main Events") on algorithmic research and/or implementation topics. If you wish to participate and also want to speak on a topic let me know (or just show up either in person or via video/audio)!
These meetings are now scheduled for the 2nd Wednesday each month (in the NAUG meeting slot in the calendar).
New: Happy New Year! No meetings in January, but meetings will resume in Feb 2007.
Summer and Fall NAWG vacation! No meetings scheduled for 2006 12 April, 10 May, 14 June, 12 July, or 9 Aug.
The eleventh NAWG meeting was held on
Wed 8 Mar 2006 @ 1300 MST (1500 EST).
Gianfranco Gentile and Joe Hembold (UNM) spoke on "Ultra-Wide Field Imaging with Spherical Harmonic Transforms" [ Gentile Presentation (PPT,PDF)] [ Hembold Presentation (PDF)]
The NAWG meeting scheduled for Wed 14 Dec 2005 is replaced with a NAUG meeting. There will be no NAWG meetings on Wed 28 Dec 2005 or Wed 11 Jan 2006 due to the holidays and the AAS respectively. Enjoy the break!
The ninth NAWG meeting was held on
Wed 9 Nov 2005 @ 1300 MST (1500 EST).
The main topic was Wide Field Imaging, with presentations by Kumar Golap on "W-Projection for the Rest of Us" [Presentation (PDF) ] and Steve Myers on "Ultra-Wide Field Imaging" [Presentation (PDF) ] .
The eighth NAWG meeting was held on
Wed 14 Sep 2005 @ 1300 MDT (1500 EDT).
The main topic was the issue of Pipelines, with presentations by Lindsey Davis (ALMA) and Lorant Sjouwerman (VLA/VLBA) plus a general discussion.
Materials - from Lindsey: The NAWG might find the following links of interest:
1. The ALMA pipeline twiki page
The talk is based is based on what happened at this meeting. At the end of the attachments section is a power point / pdf set of summary slides that people can look at if they wish (PipelineNaugSummary.(ppt/pdf). Won't be able to go over everthing in those slides so people cna ask about them if interested. The PDF summary is here.
The seventh NAWG meeting was held on
Wed 10 Aug 2005.
This meeting featured a presentation by Leonia Kogan on an interesting approach to wide-field imaging and the w-term.
The fourth NAWG meeting was held on
Wed 13 Apr 2005.
The main presentation was by S. Bhatnagar on "Pointing corrections in interferometer calibration and imaging" [Presentation (PDF)]
There was a short presentation was by S. Myers on "Summary of the Meeting on ALMA & SZ, Paris, 7-8 April 2005" [Presentation (PDF)]
The first NAWG meeting was held on Wed 24 Nov 2004. [Agenda]
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