Observation – Provenance – Characterisation DM

(CNRS)

François Bonnarel ( coordinator) ,

Mireille Louys, Alberto Micol, ...( please add your name)

A mailman distribution list has been created for this Task. The email address is:

WP7_T10_ObsProvDM@euro-vo.org

while the archive with the mail messages can be found at:

http://www.eso.org/lists/archives/wp7_t10_obsprovdm/

Possible areas of work

• Work on the Observation, Provenance and Characterisation Data Models

Current progress on Data models

Characterization Data Model Uptake

from Oct 2008 to March 2009

• The Charac DM has been used in various advanced use-cases in order to describe complex data and experiment the fine grain detailled levels of the
  model, especialy the Error and Variability maps.
• Various XML instance documents have been sketched out for specific use-cases:
  • Polarisation data
  • Multiple CCD observations

Observation Data Model

• The Observation container has been designed including Provenance and Characterization Packages.

We developed various XML serialisation examples of Provenance : for a stacked image (association), for a an observation with instrumental Provenance metadata: Telescope and Filter description.

All these exemples results of the Observation / Characterization task group initiated one year ago and have been presented and discussed in Baltimorelast fall .

More recently an example of error maps and resolution map for SLOAN spectra has been built. In that case solutions to provide pointers inside a multiextension dataset containing science data as well as ancillary data is proposed. Work is going on with Igor Chilingarian.

• Current discussions about simplification of Data models are going on (with Alberto Micol and Fabien Chereau).
  We plan to slightly modify the Characterisation DM XML schema and to propose a new list for UTYPES .