LEDAS bulk data products are currently unavailable due to a hardware failure. Investigations are ongoing. There is no estimated time to fix at this time.
The Leicester Ginga Data Archive
formerly known as Astro-C was a joint Japanese/UK mission launched by the M-3SII-3
rocket on February 5, 1987 from Kagoshima Space Center. The observation period
ended on November 1, 1991 when Ginga reentered the earth's atmosphere.
Scientific instrumentation of Ginga consists of the Large Area Counter
(LAC), the All-Sky Monitor (ASM) and the Gamma-Ray Burst Detector (GBD). The LAC,
Ginga's main detector, was a proportional counter with 4000 cm² effective
area, sensitive to X-rays between 1.5 and 37 keV. This was a non-imaging detector,
producing only spectra and light curves - in many ways the Ginga mission
had similar capabilities to the current RXTE mission. Ginga made approximately
1000 observations, covering all classes of cosmic X-ray sources then known. A
target list is provided
by the X-ray astronomy group
Almost all Ginga target and background observations have
been uniformly processed at Leicester to make a complete, quality-controlled Ginga
archive with a rich set of associated data products. The total size of the archive
is 7.3 Gb. This archive has been made available here, and is also available from
A separate restoration
effort of the Ginga data was carried out by ISAS in Japan. The archive
of data and software opened in March 2004 at the Japanese
Data ARchive and Transfer System, DARTS at ISAS.