May 17, 2005 Maria Nieto-Santisteban, JHU / IVOA - Ky oto 1 VO Applications @ JHU Open SkyQuery and more … T. Budavari, S. Carliles, L. Dobos, G. Fekete, J. Gupchup, V. Haridas, N. Li, T. Malik, M. A. Nieto-Santisteban, W. O’Mullane, J. Raddick, A. Szalay, & A. Thakar The Johns Hopkins University Baltimore, MD, USA. THE US NATIONAL VIRTUAL OBSERVATORY
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May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto1 VO Applications @ JHU Open SkyQuery and more … T. Budavari, S. Carliles, L. Dobos, G. Fekete,
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May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 1
VO Applications @ JHUOpen SkyQuery and more
…T. Budavari, S. Carliles, L. Dobos, G. Fekete, J. Gupchup, V. Haridas, N. Li,
T. Malik, M. A. Nieto-Santisteban, W. O’Mullane, J. Raddick, A. Szalay, & A. Thakar
The Johns Hopkins University
Baltimore, MD, USA.
THE US NATIONAL VIRTUAL OBSERVATORY
May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 2
NVO Core Applications
• NVO Registry (STScI & JHU)– Search and Registration of astronomical
May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 7
Virtual Observatory Query Language Layers
VOQL2 Federation
VOQL1 Web services
Portals working across nodes –SQL-like query language and federation system i.e. Open SkyQuery
SkyNodes using Astronomical Data Query Language (ADQL) and VOTABLE
May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 8
Open SkyQuery Architecture
Users
OSQ Portal
Uses Registry and full SkyNodes.
May use services at any level
VOQL2
ADQL
VO
VORegistryQueryable
Archives
ExecPlan
FULL
SkyNode
SkyNode
SkyNode
SkyNode
SkyNode
register
lookup
lookupBASIC
May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 9
Data Flow – Execution plan
SkyNode 1
Open SkyQuery
SkyNode 2
SkyNode 3
query
http://www.openskyquery.net
May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 10
Limitations
• Intended to work with small result sets constrained by Region or other attributes– Currently nodes limited to 5k rows– Intention to remove restriction – requires
change in operation
• Upload (MyData as a SkyNode) – Size limit is ~10k rows– No Region support on MyData at the moment
May 17, 2005Maria Nieto-Santisteban, JHU / IVOA - Kyoto 11
Contributors & Adaptors
• Contributors– Tamas Budavari and Tanu Malik (original prototype)– Nolan Li – main .Net development (Basic & Full)– Ramon Williamson (Java Basic SkyNode)– Tom McGlynn (Java Full SkyNode)– Iñaki Ortiz ESA/ESAC (Java “Full” SkyNode)
• Adaptors– NOAO
• Open SkyQuery portal for proprietary data using a private registry