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Data ARchives and Transmission System (DARTS) is a multi-disciplinary space science data archive for, e.g., astrophysics, solar physics, solar-terrestrial physics, lunar and planetary science, and microgravity science. Please read "About DARTS".


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2017-11-14 10:00 -- 15:00 (JST)

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Recent Topics

Hitomi (ASTRO-H) Data Released

The observation data of Hitomi (ASTRO-H), Japan’s sixth X-ray astronomy mission launched in February 2016 (and tragically terminated in a few months), was released. The observation list is here. Hitomi’s life was short, but its precious data products will last forever. One of Hitomi’s legacy is observation of the hot gas in the Perseus cluster with the highest energy resolution. Superior energy resolution of the Soft X-ray Spectrometer (SXS) allowed us to measure velocities of the hot gas with an accuracy of 20 times better than before. This is the first direct measurement of velocities of the hot gas in the center of a galaxy cluster (Nature , 535, 117, 2016). (Oct 2017)


SELENE(Kaguya) PDS3 Released

The lunar orbiter "SELENE (Kaguya)", which was launched in September 2007, continuously obtained scientific data, just until it impacted on the moon's surface in June 2009. We have released these datasets from the "SELENE L2DB system" since November 2009. Although its data format was designed based on NASA 's Planetary Data System version 3 (PDS3), it was slightly different from the original PDS3 standard. Consequently, PDS3 standard tools were not fully applicable. Also, since the data and system were closely coupled in the L2DB system, the data distribution had to be stopped due to system maintenance etc.
Envisioning long-term archiving of the Kaguya data, we have (1) improved conformity to the PDS3 standard and (2) loosely coupled system and data to solve these problems (L2DB service was discontinued after Sep. 30). Thanks to the new development, PDS3 standard tools are now applicable. Also, it has become possible to separate managements of the system and data with different update frequencies. The figures in the right-hand side are Kaguya PDS3 images displayed by three different standard tools; NASAView by NASA, ISIS qview by USGS, and QGIS, which is popular in earth observations. Kaguya PDS3 data can be downloaded from http://darts.isas.jaxa.jp/pub/pds3 as well as other PDS3 data of different satellites and/or instruments. (Oct 2017)


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Last Modified: 07 November 2017