ABOUT JUDO2

JUDO2 is the second generation of "JUDO", which stands for "JAXA Universe Data Oriented". With JUDO2, you will be able to navigate Universe while observing various kinds of astronomical data, primarily taken by JAXA's astronomical satellites. JUDO2 is also an entrance of JAXA's space science archives "DARTS" from which you may freely download the public data for your own research.

In 2007, we started the JUDO project with Suzaku data. In 2015, we added MAXI data, and also JUDO is fully reconfigured using Aladin Lite, thanks to which various kinds of suvey data (in the HiPS format), including AKARI, are available.

List of the HiPS data we created is found at http://darts.isas.jaxa.jp/pub/judo2/HiPS/hipslist.txt. These HiPS data are available at http://darts.isas.jaxa.jp/pub/judo2/HiPS. Other files used in JUDO2, json files (including instrumental field of views and the constellation boundary) and observation information files (a summary page and image file for each ASCA, Suzaku and Hitomi pointing) are also available from http://darts.isas.jaxa.jp/pub/judo2/json and http://darts.isas.jaxa.jp/pub/judo2/meta_info_page, respectively.

XMM field-of-views (footprints) and Chandra footprints, as well as direct links to their archives, are available thanks to XMM-Newton Science Archive and Chandra X-ray Center, respectively. We are grateful to them for providing excellent services. These footprints and links are updated daily using the following commands to retrieve the XMM and Chandra observation information (meta-data):

curl -f -o ${DOWNLOAD_FILE} -L "http://cda.harvard.edu/cxctap/sync?REQUEST=doQuery&FORMAT=text&QUERY=SELECT+dataproduct_type,obs_id,s_ra,s_dec,target_name,s_region,instrument_name+FROM+ivoa.ObsCore+WHERE+
dataproduct_type='event'&LANG=ADQL"

curl -f -o ${DOWNLOAD_FILE} "http://nxsa.esac.esa.int/tap-server/tap/sync?REQUEST=doQuery&LANG=ADQL&FORMAT=csv&QUERY=SELECT+observation_id,target,ra,dec+FROM+v_public_observations+order+by+observation_id"
Note, the "Chandra (Full)" footprints, which give precise detector shapes, are very heavy, so that we make the "Chandra (Simple)" footprints as default, where the Chandra field-of-view is approximated by circle. The XMM-Newton field-of-view is always approximated by circle.

Please enjoy, and we appreciate your comments and suggestions.

Last Modified: 05 June 2018