Vista Data flow system User Committee (VDUC) ============================================ IoA, 11-15.30, Fri 7 May 2004 ----------------------------- notes: Nic Walton draft 20040507 attendees: Alastair Edge Durham Vista Consortium AE Phil James LivJM UKIRT Board Nominee PJ Mike Irwin IoA CASU data flow load MI Richard McMahon IoA VDFS management team RM Jim Emerson QML VISTA/VDFS PI JE Peter Bunclark IoA VDFS/ESO coord PB Tim Naylor Exeter Chair VDUC TN Steve Warren IC UKIDSS Survey Scientist SW Steve Maddox Vista Project Board SM Steve Lucas UKIDSS GPS lead SL Perry Williams WFAU VDFS lead PW Nigel Hambly WFAU Vista Science Archive NH Simon Dye Cardiff UKIDSS science SD Jim Lewis IoA CASU pipeline developer JL Simon Hodgkin IoA CASU pipeline developer SH apologies: Will Sutherland IoA Vista Project Scientist Glossary: SSA - Supercosmos Science Archive VDFS/W - VDFS configured for WFCAM operations VDFS/V - VDFS configured for VISTA operations WSA - WFCAM Science Archive, a component of VDFS 1. Welcome and Terms of Reference 1.1 Introduction All introduced themselves - as above - and noted their role. 1.2 Terms of Reference JE: explained that Vista Project Board oversee the VDFS. From Oct 2004 a new oversight arrangement will be put into place by PPARC. TN: Who drives the science requirements for the VDFS JE: WFCAM through UKIDSS Survey Scientist, VDFS through Vista PS. AGREED: VDUC Terms of Reference v2.0 2. Overview of VDFS project goals and organisation JE: provided an update [ppt slides] 3. UKIDSS science requirements on VDFS/W [ppt slides] SW: discussed the WFCAM pipeline and science archive Science requirements. TN: decision today is one on whether or not a review is required of the WFCAM science requirements. NW: who 'holds' the WFCAM science requirements for the pipeline. SW: Andy Adamson (JAC) is responsible for the WFCAM Pipeline science requirements. TN: VDUC should be responsible for the WFCAM science requirements AGREED: function of VDUC is to review the WFCAM science requirements, and receive from the VDFS project input as to possible deviations to the project delivery schedule and impact this may have on delivery of the priority science programmes. ACTION: VDUC-FM1-3 MI: provide link to details of 'core radius' (a catalogue parameter) to SW. 4. Consortium Science Verifier [ppt slides] SD introduced himself - in position as science verifier from April 04. verification - commissioning (08/04), on-sky verification (10/04), science verification (early 05?) It was noted that early commissioning will be with engineering grade detectors in WFCAM - thus some implications for processing - as science grade detectors are integrated at a later point in commissioning. AGREED: SD encouraged to interact closely with the VDFS project team. ACTION: VDUC-FM1-4: SD to report as a standing item Science Verification activities at each forthcoming VDUC meeting. 5. VDFS Pipeline (WFCAM versions) [ppt slides] MI described the VDFS pipeline system. pre commissioning tests have been carried out using FIRES (ISAAC) data. MI noted that calibrating the complete survey to 2% will be a significant task. 6. VDFS Archive (WFCAM versions) and user Interface [ppt slides] NH updates on the science archive NH noted that the Supercosmos Science Archive which has just been released gives a good pointer to the features to be available in the WSA. The group AGREED that they would be happy to have some client side s/w installed if that gave access to useful features (TopCat access to VOTable outputs from the SSA was given as an example - this requires java 1.4 and java webstart to be installed on the end user machine). 7. Science requirements on VDFS JE led the discussion of the UK Vista User requirements Doc - VDF-SPE-IOA-00001-002 For planning purposes a wide, medium and deep survey are assumed. The agreed science requirements for the Vista aspects of VDFS are needed now. MI: VDFS final design review is Dec 2004 for the ESO deliverables. TN: thus need to address VDFS science/user requirements in time for the Dec 2004 FDR. So by 15 Aug 2004. NW: noted the current draft is a user requirements doc, not specifically a science requirements document. AGREED: the VDFS/V user requirement doc needs a statement to note that the top level science requirements are derived from the original Vista science drivers. ACTION: VDUC-FM1-7A: (by 1 June) Will Sutherland to update VDFS/V user requirements with brief statement of top level science requirements (Vista science requirements update to reflect IR focus now of Vista). The starting point being the design reference programmes in the Vista OCDD. ACTION: VDUC-FM1-7B: JE to circulate updated science/user requirements doc (from Will Sutherland) to the VDUC, Vista Science Committee and UKIDSS consortium (UK members) for comment by 15 June 2004. ACTION: VDUC-FM1-7C: all VDUC encouraged to input science drivers for possible inclusion in the science/user requirements doc to WS by 21 May 2004. ACTION: VDUC-FM1-7D: TN will inform the committee whether or not a meeting of VDUC is required ~end June 2004 to discuss development of the science requirements for Vista/VDFS. ACTION: VDUC-FM1-7E: NH to report at next meeting (assuming that there is not one organised end June 2004, in which case the one subsequent to that) on user feedback on the SSA. JE: version 2 VDFS pipeline release is currently scheduled for end Dec 2004. SW: noted the upcoming VST survey call (deadline ~Oct 2004?). 7.1 Process for feeding science requirements to the VDFS project. Level 1: first avenue should be directly to the VDFS project team. Level 2: significant science requirements/ alterations should be agreed through the VDUC and subsequently fed to the VDFS project. 8. AOB AGREED: there will be an agenda item for the later 2004 VDUC meeting addressing implications of multi-wavelength science (including VDFS data products). RM: noted that the VDUC should look at the WSA schema - this defines the header items that you are able to query on. ACTION VDUC-FM1-8A: NH: mail VDUC members VDFS/W database schema for comment by 15 Jul 2004. ACTION VDUC-FM1-8B: JE: to request PPARC send expenses forms to VDUC members 9. Date of Next Meeting ACTION VDUC-FM1-9A: TN: organise VDUC meeting ~Dec 2004. 10. Action Review ACTION: VDUC-FM1-3 MI: provide link to details of 'core radius' (a catalogue parameter) to SW. ACTION: VDUC-FM1-4: SD to report as a standing item Science Verification activities at each forthcoming VDUC meeting. ACTION: VDUC-FM1-7A: (by 1 June) Will Sutherland to update VDFS/V user requirements with brief statement of top level science requirements (Vista science requirements update to reflect IR focus now of Vista). The starting point being the design reference programmes in the Vista OCDD. ACTION: VDUC-FM1-7B: JE to circulate updated science/user requirements doc (from Will Sutherland) to the VDUC, Vista Science Committee and UKIDSS consortium (UK members) for comment by 15 June 2004. ACTION: VDUC-FM1-7C: all VDUC encouraged to input science drivers for possible inclusion in the science/user requirements doc to WS by 21 May 2004. ACTION: VDUC-FM1-7D: TN will inform the committee whether or not a meeting of VDUC is required ~end June 2004 to discuss development of the science requirements for Vista/VDFS. ACTION: VDUC-FM1-7E: NH to report at next meeting (assuming that there is not one organised end June 2004, in which case the one subsequent to that) on user feedback on the SSA. ACTION VDUC-FM1-8A: NH: mail VDUC members VDFS/W database schema for comment by 15 Jul 2004. ACTION VDUC-FM1-8B: JE: to request PPARC send expenses forms to VDUC members ACTION VDUC-FM1-9A: TN: organise VDUC meeting ~Dec 2004. Meeting Closed: 15.30