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AstroGrid: Virtual Observatory Service Nicholas Walton AstroGrid: Virtual Observatory Service Nicholas Walton AstroGrid and Euro-VO Technology Centre Project.

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Presentation on theme: "AstroGrid: Virtual Observatory Service Nicholas Walton AstroGrid: Virtual Observatory Service Nicholas Walton AstroGrid and Euro-VO Technology Centre Project."— Presentation transcript:

1 AstroGrid: Virtual Observatory Service Nicholas Walton AstroGrid: Virtual Observatory Service Nicholas Walton AstroGrid and Euro-VO Technology Centre Project Scientist (Institute of Astronomy, University of Cambridge)

2 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p2 Printed: 31/01/07 Outline Online Demo of AG system Practical Session Discussion Session  the good  the bad  suggestions and lessons learned

3 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p3 Printed: 31/01/07 http://www.astrogird.org/launch AstroGrid 2006.3 Release: Aug 2006

4 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p4 Printed: 31/01/07 Image Discovery with AstroScope Workbench  AstroScope  Heliscope for solar Search on a position  RA, Dec  Object Name Investigate and explore data sources  images:Aladin  catalogues:TopCat  spectra:Splat, VOSpec Try: Arp 220

5 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p5 Printed: 31/01/07 Catalogue Access Catalogue data available both as FITS tables on a per pointing basis In release – unified object catalogues List of tables in the database Selected table Table Description Table Columns Query being built Dialog to insert selected columns into selected section of the query

6 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p6 Printed: 31/01/07 Examples to follow: http://www2.astrogrid.org/science/data-access  http://www2.astrogrid.org/science/data-access/data-access-worksheet http://www2.astrogrid.org/science/data-access/data-access-worksheet  http://www2.astrogrid.org/science/science-examples-stars/iphas-catalogue- images/ http://www2.astrogrid.org/science/science-examples-stars/iphas-catalogue- images/

7 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p7 Printed: 31/01/07 Python Scripting Command line access to Astrogrid Utilises python Slides: Eduardo Gonzalez Gonzales  AstroGrid science team  eglez@ast.cam.ac.uk eglez@ast.cam.ac.uk

8 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p8 Printed: 31/01/07 What is Python? Programming language: interpreted, object oriented, high- level, dynamic semantics Simple, easy to learn, read, use Short code (compared to e.g. C/Java) Extensible in C/C++/Fortran/Java/anyother Extremely portable (PalmOS, WindowsCE, OS/2, PlayStation, BeOS, VMS,...) PRODUCTIVITY

9 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p9 Printed: 31/01/07 What is Python?

10 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p10 Printed: 31/01/07 Capabilities MySpace read, write, list, delete Registry query, xquery, resolve CEA & JES: query, execute, monitor SIAP, SSAP, SkyQuery PLASTIC Simbad resolver, Vizier, NED Control workbench UI from command line

11 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p11 Printed: 31/01/07 Connecting to the ACR server This can be added into a module astrogrid.py and imported from other scripts.

12 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p12 Printed: 31/01/07 Getting help

13 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p13 Printed: 31/01/07 Getting help

14 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p14 Printed: 31/01/07 Getting help

15 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p15 Printed: 31/01/07 Querying the registry

16 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p16 Printed: 31/01/07 Querying the registry

17 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p17 Printed: 31/01/07 Running an application

18 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p18 Printed: 31/01/07 More Examples Save to / load from MySpace List MySpace contents Return status of submitted jobs See more examples in: http://wiki.astrogrid.org/pub/Astrogrid/AcrRecipes/examples.zip

19 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p19 Printed: 31/01/07 Suggested Python Exercises Given an input list of coordinates (or object names):  Search selected services (SDSS,...) for images, retrieve results and images to MySpace.  Search for catalogues (SDSS, 2MASS,...) and query them returning results to MySpace Run SExtractor on images, cross match catalogues

20 Nicholas Walton: AstroGrid @ Groningen: Jan 26, 2007 p20 Printed: 31/01/07 Suggested Python Exercises Backup contents of MySpace to local disk Batch upload directory contents to MySpace List submitted jobs, delete those canceled or terminated in error Send a VOTable to TOPCAT using PLASTIC

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