N A W G ======= NRAO Algorithms Working Group Meeting - PRELIMINARY AGENDA Date: 2006-02-08 (Wednesday) Time: 1300 MST = 1500 EST Video Hub: CV-conf (others call in) Rooms: SOC317/CV311/GB241/TUCN525 Audio Toll-Free number (in US): 866-791-0515 Participant Passcode: 4329509 =============================================================================== The NAWG: I would like to invite you to attend and participate in the tenth NRAO Algorithms Working Group (NAWG) meeting on Wednesday 8 February 2006. 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 Links to Jan 2006 URSI talks: Sessions J2 Friday Jan 6 2006 New Interferometric Calibration Techniques Organizer: M. Wright - Mark Holdaway's talk on fast-switching for ALMA http://www.aoc.nrao.edu/~smyers/aips++/talks/HoldawayURSI06jan06.pdf Sessions J3 Friday Jan 6 2006 Challenges and New Algorithms for Interferometric Imaging Organizer: S. Myers - Sanjay's talk on high-dynamic range imaging http://www.aoc.nrao.edu/~smyers/aips++/talks/BhatnagarURSI06jan06.pdf - Urvashi's talk on wide-band continuum imaging (see below) http://www.aoc.nrao.edu/~smyers/aips++/talks/UrvashiURSI06jan06.pdf - Crystal's talk on submillimeter imaging (SMA & ALMA) http://www.aoc.nrao.edu/~smyers/aips++/talks/BroganURSI06jan06.pdf 2. Project-related (ALMA, EVLA, GBT, VLBA, &c.) issues o EVLA Memo 102 (02/2006) "Monte Carlo Methods for Bayesian Image Reconstruction and Analysis in Radio Astronomy" Urvashi R. V. & T.J. Cornwell http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo102.pdf 3. ***Main Event*** - Presentations and Discussion Items ******************************************************************* Urvashi Rao-Venkata (NMT, NRAO-Socorro) "Wide-Band Imaging for the EVLA" This will use the slides from her URSI talk http://www.aoc.nrao.edu/~smyers/aips++/talks/UrvashiURSI06jan06.pdf ******************************************************************* 4. Future events (please sign up!) o Convolutional mosaicing (Myers, Golap, Bhatnagar) 5. 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 - W-projection paper draft: http://www.atnf.csiro.au/people/tim.cornwell/wproj-paper.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 Algorithms etc. FFTs: http://www.fftw.org/links.html FFTs on the Sphere: http://www.cs.dartmouth.edu/~rockmore/fft.html http://www.cs.dartmouth.edu/~geelong/sphere/ HEALPIX: http://healpix.jpl.nasa.gov/ Fast convolution on the sphere: http://arxiv.org/abs/astro-ph/0008227 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 6. Upcoming meetings and deadlines: o 2006 Jan 4-7 URSI Meeting (w/Algorithms session), Boulder, CO ******************************************************************* o NAWG Website: http://www.aoc.nrao.edu/~smyers/nawg/ *******************************************************************