vo & astro-wise & others a.belikov omegacen [email protected]
TRANSCRIPT
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What will we see?
VO: what, why and how?VO Services: examplesAstro-Wise data in VOVO data: how to use
next steps
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Virtual Observatory
VO is one
standards education implementation
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VO & Grid
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Why VO?
multiband combined surveys
(almost) no cast problem
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Simplicity of VO
parametrized request to the data XML for data exchange XML for data description wrapped data (images)
simple range request required parameters for request required parameters for result
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www.ivoa.net
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Publishing in VO put data in a place available for an
external user provide a standard VO service
(ConeSearch-STA, SIA, SSA) register data
datastorage(RDBMS)
http server
registry
interface
ODBC VOstandards end-user
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Description of resources: XML
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VOTable the general container for the data XML based multiple data blocks flexibility: tables, images, archives
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task: image qualifier machine
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Hierarchy of resources
WENSS
OmegaCEN
http://vo.astro-wise.org/ConeSearch?FORM=VOTABLE&PROJECT=WENSS
http://vo.astro-wise.org/SIAP?FORM=VOTABLE&PROJECT=WENSS
dbview.astro-wise.org
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Astro-Wise problems: Data
RDBMS Objects XML
DBA, AW user AW user VO user
interfaces to VO
access to AW database
fast changes in the data
security
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Astro-Wise problems: Access
uniform identifier
access by project, instrument
as less changes in AW concept as possible
VO layer on top of AW
more functionality
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Registry
local publishing registry
relational database-like structure
python
compact: 50 records
AW class
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VO services
catalogs, images ConeSearch, SIA
http://vo.astro-wise.org/ConeSearch?FORM=VOTable&PROJECT=ESO-LV
http://vo.astro-wise.org/ConeSearch?FORM=VOTable&[email protected]
http://vo.astro-wise.org/SIAP?FORM=VOTable&PROJECT=ESO-LV
http://vo.astro-wise.org/SIAP?FORM=VOTable&PROJECT=ESO-LV
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Registrylocal dynamic publishing registry
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Publishing in Astro-Wise
context
change privileges
visibility scope
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Access to VO data
VOTable saved on local disk
FITS
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VO in Astro-Wise: Example
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task: astrophysical parameterestimation
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VO tools
browsers (Aladin, topcat) publishing (SAADA) visualization (ViSIVO) desktop (Astrogrid) Plastic VO key sites http://us-vo.org
http://euro-vo.org
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NVO
Registry Datascope Mosaic service Grid interface ConeSearch SIAP
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Tools for publishing
Astrogrid/DSA catalogs, images, spectra MEX images, spectra DALToolkit images, spectra DMMapper catalogs SAADA catalogs, images
RDMS (mySQL, Postgres)http server (apache-tomcat)
http://cds.u-strasbg.fr/twikiDCA/bin/view/EuroVODCA/DcaMay2007Workshop
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Tools: Plastic
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Tools for browsing
Workbench
Aladin, v4
topcat
catalogs, images, spectra,transient events
catalogs, images
catalogs, visualization
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topcathttp://www.star.bris.ac.uk/~mbt/topcat/
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Aladin
catalogs, images FOVs
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VO: next steps
standards ontology VOSpace workflow management
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VOEvent
VOEvent: registry for transient events
www.estar.org.uk