Minutes DAL1, Cambridge, 27-Sep-2007, 11:40-13:00 Co-Chairs: D. Tody, M. Dolensky Minutes: M. Dolensky DAL Session Page and Presentations http://www.ivoa.net/twiki/bin/view/IVOA/InterOpSep2007DAL DAL1 session: ============= 1. Talk: VO for Ground-based Optical Spectroscopy (Petr Skoda) comment: - one should make tools interoperable rather than having VO tools support all analysis functionality directly - on the other hand there is a usability issue with current VO tools as reported by Astronomers at present - data cetres should also be helped to bring in their own data; this should help to resolve gaps 2. Talk & demo: Demo of spectrum service features including SSA and spectrum DM implementation (Laszlo Dobos) comment: - one shouldn't move too much analysis into the SSA service clarification: - the ESO service mentioned was under development, not registered and not meant for use by non developers. Use this end point instead http://vo.eso.org:8080/ssaserver/ForsProxySsap?REQUEST=queryData&FORMAT=METADATA Followed by an update and discussion of: 3. SSA status & near term plans (Doug Tody) comment: - avoid to invent a new protocol for each new query pattern 4. prototyping SIA2 query method (Francois Bonnarel) Q: Why POS, SIZE in V2? A: backward compatibility Q: Where will 3D cube access be defined; for images only or also spectra? A: Not yet decided. IFU data can be sliced as part of an SSA service as of today. Comment: - some discussion evolved around the quest for general access vs. specialized protocols; in that context it was proposed that one should use a common query interface for images and spectra with special purpose extensions no consensus 5. SLAP SLAP specification is pending until data model has been worked out.