N A W G ======= NRAO Algorithms Working Group Meeting - PRELIMINARY AGENDA Date: 2005-8-10 (Wednesday) Time: 1300 MDT = 1500 EDT Video Hub: CV-conf (others call in) Rooms: SOC317/CV311/GB241/TUCN505 =============================================================================== The NAWG: I would like to invite you to attend and participate in the seventh NRAO Algorithms Working Group (NAWG) meeting on Wednesday 10 August 2005. The goal of these meetings is to have a general forum to discuss data-processing algorithms related issues of interest to 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. It 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 ("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 scheduled for the 2nd Wednesday each month (in the NAUG meeting slot in the calendar). =============================================================================== Agenda: Send items for inclusion to smyers 1. Organizational issues o solicitation of topics for future meetings (Steve) 2. Project-related (ALMA, EVLA, GBT, VLBA, &c.) issues (updates from last meeting) o Algorithms Workshop - it was suggested by Bill Cotton that an "Algorithms Workshop" be convened sometime in the fall. This would mostly be NRAO people but we could (should?) include interested experts from other groups (ATA, CARMA, LWA, MWA, US-SKA, etc.). This seems to me to be an excellent idea! o Collaborations with Jodrell Bank (and/or NFRA) - Bill had discussions with Phil Diamond and Walter Jaffe about collaborating on algorithm development problems (in particular wide-band imaging). I had similar discussions back in the spring at the JB RadioNet meeting. I think this is worth pursuing. o URSI Jan 2006 - Mel Wright and I are co-organizing sessions at the Boulder URSI meeting on Calibration and Imaging Algorithms. Interested parties from NRAO (also UNM and NMT) should consider attending - the dates are Wed Jan 4 - Sat Jan 7 (the week before the AAS) with our session tentatively scheduled for Fri Jan 6. There are also sessions on Focal Plane Technology and Spectrum Management. Suggestions for speakers and topics also welcome. See: http://astro.uchicago.edu/ursi-comm-J/ (new) o contributed topics 3. ***Short Topics*** - Presentations and Discussion Items ******************************************************************* o contributions welcome! ******************************************************************* 4. ***Main Event*** - Presentations and Discussion Items ******************************************************************* o Leonia Kogan - Wide-field Imaging for (approximately) planar arrays. Leonia will be using transperancies, but an (expanded) text of the subject of his presentation can be found at: http://www.aoc.nrao.edu/~lkogan/widefield.ps ******************************************************************* 5. Future events (please sign up!) o George Moellenbrock - an update on frequency-dependent polcal (main) o Walter Brisken - a proposed self-cal modification (short) 6. Relevant reading: o Online Conference Proceedings: - "SKA Wide-Field Imaging Workshop", Dwingeloo, NL, 22-24 June 2005 http://www.skatelescope.org/pages/news/Wrksp20220605.htm - "ALMA and SZ", Paris, 7-8 April 2005 http://www.dstu.univ-montp2.fr/alma/sz.html - "First RadioNET Software Forum", Jodrell Bank, 1-3 March 2005 http://www.radionet-eu.org/rnwiki/ProceedingsFirstSoftwareForumMeeting o Paper & Memos: - Beyond the isoplanatic patch in the VLA Low-frequency Sky Survey (W.D. Cotton et al.) Abstract: http://link.aip.org/link/%3FPSISDG/5489/180/1 - Solving for the Antenna Based Pointing Errors (Bhatnagar, Cornwell & Golap) http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo84.pdf - EVLA and SKA Computing Costs for Wide Field Imaging (Cornwell) http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo77.pdf - W Projection: A New Algorithm for Non-Coplanar Baselines (Cornwell, Golap, Bhatnagar) http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo67.pdf - Effects of Atmospheric Emission Fluctuations and Gain Fluctuations on Continuum Total Power Observations with ALMA (Holdaway) http://www.mma.nrao.edu/memos/html-memos/abstracts/abs490.html http://www.mma.nrao.edu/memos/html-memos/alma490/memo490.pdf o Post-processing requirements: - ALMA Offline Data Processing Requirements http://www.alma.nrao.edu/development/computing/docs/joint/0018/ALMAoffline-sw-18.pdf - EVLA Offline Data Processing Requirements http://www.aoc.nrao.edu/~smyers/evla/evla_offline.pdf o GBT: - GBT Software Review Agenda & Presentations http://wiki.gb.nrao.edu/bin/view/Software/ReviewAgenda2004 - GBT Standard Observing Modes http://wiki.gb.nrao.edu/bin/view/Observing/StandardObservingModes 7. Upcoming meetings and deadlines: o 2006 Jan 4-70 URSI Meeting (w/Algorithms session), Boulder, CO ******************************************************************* o NAWG Website: http://www.aoc.nrao.edu/~smyers/nawg/ *******************************************************************