Third Technology Forum Hack-a-thon

• Discussion on Generic dataset protocol (Francois Bonnarel, Pedro Osuna (partially), Jesus Salgado)
  • Now objectives of this task are very close to Generic Data Set one
  • Agreed to find a way to easily describe type of resource (SIA, SSA, etc) so clients could know "a priory" the expected response and decide if they can handle it
  • Discussion on how to express extensions; three approaches:
    • Attached; several resources of different types in the same response
    • Detached; links to external services associated. The type will be defined in the original response
    • Both; Allow both approaches and leave the data provider to use one or another depending, e.g., of the kind of association between record
  • Details to be added to the specific WP7, Task 5 pages

• Discussion on Photometric datamodel (Mireille Louys, Francois Bonnarel, Alberto Micol, Carlos Rodrigo, Pedro Osuna, Jesus Salgado)
  • Small changes on the model agreed:
    Removal of "short-cut" Photometry Filter - SED. There are two ways to get the Photometry Filter details in
    the old filter: through every photometry point and from the SED, in case all the photometry points described
    have the same photometry filter associated. As per ML suggestion, this latest shortcut (SED-Photometry filter)
    should be removal to prevent circular loops
    Change of some multiplicity description expressed in a non-standard way
  • Discussion about transmission curve. In the present model, there is only one transmission curve associated to the photometry filter. However, as per AM comments, the real transmission curve for a photometry filter is a component of different things from the Air conditions (for ground based observations), observation angle, instrument conditions, etc. Moreover, the components that give value
    to the final measurement are also a combination of the real source emission and background. This is not present in the model. JS considers this is raw data so it should be reduced. CR points out that all the catalogs are already reduced to prevent this ambigouity so the values can be converted to flux just by using the zero point and the wavelength of reference. It was decided to do not enter in this details and only describe pure photometry filter characteristics in the photometry filter class that will be used by, e.g., the Filter Profile Service
  • Discussion on filter details varying with the time. The filters change with the time, because of modifications, degradation, etc,.. so the filter transmission has a range of validity. The discussion was about how to handle it

• Discussion between Sébastien, Brice and Norman on the possible interaction between CDSAnnotations and SKUA
• A discusssion required with Mireille, Anita, François on Radio cubes
• A discussion required including Thomas (?) , Mireille, Fabien and Alberto on simplification of the Char datamodel (utypes)
• Discussion between Aurélien, Dave and Noel on Curation Tool basic agreements and development tools details/organisation
• Discussion between Mark Taylor and Alberto Micol about how service providers can find out which applications are consuming their services. HTTP User-Agent request header? Mark to follow up on IVOA Apps list.