Prsentation PowerPoint

1
Toward an AVO Interoperability Prototype M.
Allen1, F. Genova1, F. Ochsenbein1, S. Derriere1,
C. Arviset2, P. Didelon3, M. Dolensky4, S.T.
Garrington5, R.G. Mann6, A. Micol7, A.M.S.
Richards5, G.T. Rixon8, A. Wicenec4
1CDS, 2ESA, 3SAP/TERAPIX, 4ESO ,5Jodrell Bank ,
6ROE, 7ESA/ST-ECF, 8University of Cambridge

• New Developments
• Driven by implementing diverse archives into
  prototype
• RGB colour composition
• Contour representation
• Display enhancements for radio images and
  management of very large images
• VizieR search enhancements based on UCDs, and
  facilities to convert units and combine tables

• Implementation of a working Interoperability
  Prototype is a milestone for year one of the AVO
  project.
• The basic task of the prototype is to federate
  ground and space multi-? data archives of AVO
  partners into the CDS interoperability services
  (VizieR and Aladin).
• The aims of the prototype system are to
• Evaluate interoperability tools in terms of
  usability and function
• Drive specifications and development of new
  functionalities
• Provide a test bed for new and evolving
  standards (UCDs,VOTable)
• Enable early science usage of VO-like tools and
  get user feedback
• Heighten awareness about basic interoperability
  requirements among archive providers
• Compile a set of practical interoperability
  recommendations

AVO Partner Archives VLT, NTT ESO Imaging Survey
(EIS) HST/ECF ISO XMM Wide Field UK
archives Jodrell Bank Radio Archives
(MERLIN) TERAPIX
Colour composition of three DSS images of the
Crab, with contours and positions of observations
stored in archives overlaid

• Practical recommendations for Interoperability
• Direct http access to archived images
• Astrometry information in FITS World Coordinate
  System
• Update mechanisms for living archives
• Assessment of data access and rights

Summary The AVO interoperability prototype is
implementing an increasing set of European
archives into the CDS VizieR and Aladin tools.
Additional developments and customizations are
also being driven by requirements of the AVO
Early Science Demonstration forseen for early
2003
Colour composite of VLT ISAAC J, H, and WFI-R
frames of the central region of the Chandr Deep
Field South. Overlaid with the EIS point source
catalog with selected values shown in the lower
panel with direct access to full catalogue data