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Crossmatch: the NRAO Cross-identifcation Service

Crossmatch: the NRAO Cross-identifcation Service. Jared Crossley. Data Archive Access Meeting - Socorro, NM - 5 April 2010. the Goal. Provide a way for astronomers to easily find complementary data in multiple telescope archives. the Motivation.

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Crossmatch: the NRAO Cross-identifcation Service

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  1. Crossmatch:the NRAO Cross-identifcation Service Jared Crossley Data Archive Access Meeting - Socorro, NM - 5 April 2010

  2. the Goal Provide a way for astronomers to easily find complementary data in multiple telescope archives. the Motivation • Astronomers who work at other wavelengths have requested VLA data to complement their own data sets. • Increase accessibility of archival data, especially pre-processed data.

  3. Upshot for Archive Access • The application I’m developing may demonstrate a nice user interface to archival data. • Highlights the relevance of multi-archive & multi-wavelength data access. • Demonstrates the usefulness of VO tools and standards.

  4. Accessing Multiple Archives • A standard protocol for obtaining archival metadata: VO Simple Cone Search (SCS). • SCS is intended to provide catalog data, but some services distribute archival metadata instead. • For lack of a better alternative, use SCS.

  5. The Application Crossmatch consists of 3 parts: • Static web content (HTML & JavaScript); provides a query page for data searches and a framework for VOView. • VOView: a client-side VO app that provides a web browser user interface to VO Table data. • A proxy service; allows the user to acquire data from other domains

  6. VOView • Designed as an efficient interface to VO Tables with 1000 to 100,000 rows. • Uses XSLT to quickly process data • Provides: Pagination, Sorting, Filtering, Dynamic column re-ordering, showing/hiding columns, easily export data (XML, ASCII, …), Display column units, datatypes, & descriptions

  7. Demo http://webtest.aoc.nrao.edu/jcrossle/crossmatch/

  8. To-do List • Collapse partially redundant rows • Link table rows directly to archive data • Increase interactivity between display windows (sorting, filtering, …?)

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