UDON service has restarted
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A convinient web-tool "UDON" (Universe via DARTS ON-line) is back on-ine, with which you can specify a region to extracta and display X-ray light-curve and spectrum. The new UDON can handle ASCA data in addition to Suzaku. Please try samples first. Alternatively, on the search page, you can specify the satellite, and search for sources by name or observation sequence number.