1. 8 September 2008NVO Summer School 2008 – Santa Fe1 Publishing Data and Services to the VO Ray Plante Gretchen Greene T HE US N ATIONAL V IRTUAL O BSERVATORY

2. 8 September 2008NVO Summer School 2008 – Santa Fe2 NVO Public Registries RegistryURLSearchable?Publishing? STScI/JHU NVO Registry http://nvo.stsci.edu/voregistry/Yes Caltech Carnivorehttp://nvo.caltech.edu:8080/carnivore/Yes NCSA Registration Portal http://nvo.ncsa.uiuc.edu/nvoregistration.htmlNoYes Private Publishing Registries HEASARC CDS Only support harvesting protocol

3. 8 September 2008NVO Summer School 2008 – Santa Fe3 Overview of Publishing Resources are published if one can use NVO facilities to find them. How to Publish to the NVO http://us-vo.org/pub/files/PublishHowto.html –Multiple layers of publishing Starts with registry description of resource Data Access Services Incremental exposure for incremental effort –Who are you? How you publish depends on what you want to publish. An individual with a small data collection An archive center Someone with a cool service

4. 8 September 2008NVO Summer School 2008 – Santa Fe4 Small collections: VO-ready Repositories Repositories that allow users to deposit data to share with community –Guarantee long-term storage, availability Automatic support for VO publishing mechamisms –Entries into NVO Registry –Support for standard services: Cone Search, SIA, SSA, SkyNode Currently available Repositories –Images: NCSA Astronomy Digital Image Library http://adil.ncsa.uiuc.edu/http://adil.ncsa.uiuc.edu/ –Spectra: Spectrum Service for the VO http://voservices.net/spectrum/http://voservices.net/spectrum/ –General: NASA Extragalactic Database (upon request; VO support in development) Part of an emerging data-preservation effort –Focusing on processed products associated with published results –Collaboration between NVO, journal publishers, and the library community –Goals: data publishing integrated into the journal publishing process data stored in distributed repositories run by academic libraries fully VO compliant

5. 8 September 2008NVO Summer School 2008 – Santa Fe5 Persistent Archives: Tools for Federation Registering your resources with a VO publishing registry –Enter description into registration form at one of the available NVO registries: STScI/JHU Registry: http://nvo.stsci.edu/voregistry/http://nvo.stsci.edu/voregistry/ NCSA Registration Portal: http://nvo.ncsa.uiuc.edu/nvoregistration.html http://nvo.ncsa.uiuc.edu/nvoregistration.html Caltech Carnivore: http://nvo.caltech.edu:8080/carnivore/ http://nvo.caltech.edu:8080/carnivore/ –If you have a large number of resources to register, you can run your own registry on your own site Caltech Carnivore: http://nvo.caltech.edu:8080/carnivore/ http://nvo.caltech.edu:8080/carnivore/

6. 8 September 2008NVO Summer School 2008 – Santa Fe6 What can/should you register? –Should: your Organization Declares yourself as a publisher with an ID –Should: your Data Collection Users at least know how to access it via a Browser –Can: your existing services Browser-based services: e.g. search page Traditional CGI services Web Services The next level… Implement and register one or more standard services –Cone Search –Simple Image Access –Simple Spectral Access* –SkyNode *newest service standard Persistent Archives: Tools for Federation

7. 8 September 2008NVO Summer School 2008 – Santa Fe7 Cool Services: Integrating with the VO 1.Register your service at a registry Currently… Can register a generic Web Service If service doesnt fall into supported categories, register it as a generic Service Improved support for non-standard services coming 2.Integrate support for standard VO formats, schemas FITS and VOTable Standard Data Model schemas (emerging) VOResource, Space-time Coordinates, Spectra 3.Implement Standard Support Interface a standard in development for: Self-description, tracking health and usage

8. 8 September 2008NVO Summer School 2008 – Santa Fe8 A word about Identifiers… IVOA Identifier: a globally-unique URI identifying a resource Ex: ivo://adil.ncsa/targeted/SIA Required as part of a registered resource description As publisher, you control what it looks like Two components: –Authority ID: e.g. adil.ncsa Defines a namespace for identifiers Owned by a single publishing organization –Resource Key: e.g. targeted/SIA Name for the resource unique within the namespace Encourage re-use of local identifiers

9. 8 September 2008NVO Summer School 2008 – Santa Fe9 New publishing interface is under development –Wizard-like approach –Knowledge of Resource Metadata schema unnecessary New standards will allow more metadata to be pulled from services themselves –Example: table columns Your feedback is valuable! –Publishing GUI –The publishing process –Client interfaces Construction Ahead