Examples for Oxford workshop

• Gemini archive at CADC (service maintained by Canadian VO)
  • In VOExplorer, click on New Smart List
  • Enter Gemini as search term and create a list
  • Select CADC/Gemini and click on Query in the Actions tab on the left.
    • This will start a VOExplorer set up to query the Gemini image archive.
    • Enter an object name or position observed by Gemini (e.g. Virgo A)
  • When some images are returned, you can download them or visualise the FITS files directly if you have Aladin or Gaia.
• You can combine the results with other data, e.g. go back to VOExplorer and under *Examples - Cone Search" select both 2MASS XSC and PSC
  • Use Query again around the position of Virgo A - increase the search radius to 0.1 deg
  • You can then superimpose the results

• SKADS Simulated Sky
  • In VOExplorer, create a New Smart List for SKA (as above)
  • Select Build ADQL under Actions
    • Enter a query e.g.
      

      Select top 100 * 
      From sources as a 
      Where a.agntype=2 

    • Click on Validate Edit
    • Choose VOSpace as the location for the Results
      • You will need to have an AstroGrid account and log in
    • Execute the query.
    • When complete, you can download the result or visualise it e.g. in TopCat.
      • This allows you to manipulate columns, display source size etc.

-- AnitaRichards - 07 Jun 2008