The Leicester Database & Archive Service (LEDAS) is an online database service for astronomers, providing access to source catalogues and digital data products, with an emphasis towards high-energy astrophysics (X-ray) satellite data. LEDAS provides access to the 1XMM and 2XMMp archives, the European mirror of the Chandra Science Archive, and data products for ROSAT, ASCA, Ginga and EXOSAT. These archives can be searched and data downloaded via a straightforward web interface. Work is ongoing to link LEDAS to AstroGrid and the international Virtual Observatory, providing a seamless method of combining astronomical data from centres around the world.

LEDAS has been a public facility since 1992. The LEDAS cluster now stores nearly 2TB of catalogue and archive data (see LEDAS home page, http://www.ledas.ac.uk/ ) and the data volume continues to grow rapidly. The service is very popular, receiving c.25,000 web hits per month, and providing data downloads of ~2GB per month.

Click on this link to see the archive web interface (ARNIE5) showing results of search on 2XMMp Serendipitous Source Catalogue. Source images and time series shown. Fig2.jpg

Other useful links for further information are:

Archive web search interface: http://www.ledas.ac.uk/arnie5/



Chandra Science Archive European Mirror: http://chandra.ledas.ac.uk/



For the LEDAS Developer/Support Scientist contact: ledas-help@star.le.ac.uk

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