31st July 2003 Present: MJI, STH, JRL, PSB, JMI, DWE Agenda ------ 1. Actions from last meeting 2. Comments on WFAU minutes 3. Monthly progress report on WPs 4. AOB Minutes ------- 1. Actions from last meeting STH has still not received a reply from Sandy Legget re: photometric monitoring data. He will try again. <<<< JMI have placed a preliminary report on difference imaging test results DWE on the web - more in item 3 MJI PSB have made some progress in getting replacement desktops for JRL and STH JRL and a 2 Tbyte RAID array for the archive though there are still MJI vendor-based delays. Issues regarding the office revamp etc. are now out of our control and should be removed from the action list but still actively monitored. PSB have sorted out the reboot problem with the sybase server (cass38) and JRL sybase has been upgraded with minimal problems. STH has circulated updated management spreadsheets (internal/management) and incorporated received comments MJI has sorted out the location of the July WFAU minutes STH re-introduced the VISTA relevance factor into the management spreadsheets MJI has updated the overview WP spreadsheets for 2003,2004, but this has STH not propagated into the online documents yet <<<< MJI has asked NCH about the Ultrium I -v- II test. ATC have the Ultrium I equipment but not the Ultrium II yet. From the WFAU minutes these tests are on their todo list. ALL sent feedback corrections/comments on Q3 deliverables JMI sent feedback to JRL of his attempt at running the INT WFC pipeline in order to help with documentation etc. JRL has not had a chance to package up a night of processed CIRSI dressed in WFCAM clothing (ongoing) <<<< JMI has placed preliminary simulations report on internal web page MJI pointed out that the list of simulation tests currently being done is included in the above report MJI contacted and obtained from Mark Casali his WFCAM simulation parameters JRL has passed a first iteration of pipelines milestones on to MJI. This will be discussed with AA <<<< MJI has registered for ADASS together with PSB and JRL. Oral and/or poster presentations were discussed and will be finalied before the abstract deadline. <<<< PSB obtained template ESO instrument calibration documents 2. Comments on WFAU minutes Various points regarding the data transfer rates were commented upon. The general feeling was that since the readily achieved 4 MB/s will transfer 100 GB of data in 7 hours, why spend a seemingly large amount more effort in trying to squeeze the pips further. 3. Monthly progress report on WPs The monthly VDFS meeting will be held next Wednesday afternoon. To save time everyone was requested to send in short reports (and percentage progress) on WPs to STH as soon as possible and raise any problems here and now. <<<< JRL mentioned that he was having problems communicating with people on Hawaii (they weren't responding to his emails). MJI said that he would raise this issue at the MCM since this wasn't the only occurrence. <<<< DWE asked if anyone had heard anything regarding the appointment of a UKIDSS Survey Manager on Hawaii. MJI will email AA about this. <<<< MJI has placed JPE's 1st August report to the VISTA Project Board in the internal web pages. A lot of progress has been made with the simulations. There are still problems with reproducing realistic galaxy images using Skymaker. Although Artdata (IRAF) produces more realistic galaxy images (and is 20x quicker) there are further unresolved issues regarding the generated image parameters. JRL suggested that we should contact Frank Valdes about Artdata problems. <<<< However, since a lot of the simulation trials could progress on PSF-like images this aspect has been followed through, with the galaxy issue put on hold, and a version 1. report written and place on the web pages for comment. It was also asked whether we need any more complexity than Artdata provides (de Vaucouleurs and exponential profiles). MJI pointed out that for now this would be fine for the next stages since both are special cases of Sersic profiles and can be used to test (version 2.) software development. DWE suggested talking to Carine Babusiaux since she has also investigated Skymaker and IRAF for her GAIA simulation work. <<<< JMI showed the current state of the image subtraction report and this was discussed. The difficultly of defining quantitative tests to catagorize the 3 software packages was noted. MJI noted that measures based on the residual flux histograms should provide a first pass statistic and should be investigated. Various improvements for the presentation of the intercomparison plots were raised and will also be incorporated in an updated report. <<<< STH suggested spatial measures based on summed (unsaturated) residual images might be useful, but as this will involve correlating with the direct images this should be deferred until the simpler metrics have been investigated and compared with visual assessments. DWE said that he had installed SWarp and was going to base the interpolation tests on this package since it incorporated all the well known methods. 4. AOB The Old Schools finance division in the University has had the wherewithall to issue new contracts for at least two weeks but must have all gone off to their Tuscany Villas for the duration. Continuing Actions ------------------ STH keep on pursuing Sandy Legget re: photometric monitoring data STH propagate the updates of the overview WP spreadsheets for 2003,2004 MJI into the online documents JRL package up a night of processed CIRSI dressed in WFCAM clothing MJI to discuss first iteration of pipelines milestones with AA JRL MJI finalise and submit abstracts for ADASS presentations JRL PSB New Actions ----------- ALL send in short reports (and percentages) of WPs progress to STH by Monday morning. MJI to raise issue of communication with JAC individuals at MCM. MJI to ask AA about progress UKIDSS Survey Manager appointment on Hawaii JMI contact Frank Valdes regarding model image parameter problems STH with IRAF artdata DWE DWE talk to Carine Babusiaux about simulations using Skymaker and IRAF JMI make quantitative intercomparison of image subtraction based on simple DWE histogram measures, improve intercomparison figures and update report.