Japanese Virtual Observatory Project Masatoshi OHISHI Yoshihiko MIZUMOTO

Japanese Virtual Observatory Project Masatoshi OHISHI, Yoshihiko MIZUMOTO, Naoki YASUDA, Yuji SHIRASAKI, Masahiro TANAKA, Satoshi HONDA (NAOJ) and Yoshifumi MASUNAGA (Ochanomizu Univ. and NAOJ) in Collaboration with Fujitsu Ltd. Contact Address: adac@jvo. nao. ac. jp Services callable Webブラウザ through Grid User’s own service 1. Adoption of Globus Toolkit 3 (OGSA), 2. User management, the 3. Simple user interface for making a query, showing the result, and so on. . , 4. Federation of distributed DBs, Query request Registry search Search criteria Window Status monitor Window Query Results Analysis request Results Window Web Browser Windows, Solaris 8, Linux Security Manager DAISGR OGSA -DAI Distributed Resource manager Registry Resource Manager Globus Tk Portal Server Portal servlet User management Status display Distributed processing control ・Search DAISGR ・Parse GWDSL ・Preparation, Execute ・Confirmation of results Data storage Web Server Globus Toolkit V 3 Make schedule II Globus Toolkit V 3 Solaris 8 JVO-QL parse server User DB server Gb Ether GT 3 user data Federation of distributed DBs 5. Integrated data analysis services. User operation Window Globus Toolkit V 3 データ数count X match OGSA-DAI Query request Analysis server Analysis services Linux Query request ORACLE Image management Postgre. SQL DB SUBARU Sup. Cam i-band 2 MASS 画像管理 DB Postgre. SQL SUBARU Sup. Cam z-band Image management DB Solaris 8 Analysis services Globus Toolkit V 3 OGSA-DAI X match Data number count WSDL Data query services Data base server N Linux Analysis services Globus Toolkit V 3 Linux WSDL Data number count データ検索処理 OGSA-DAI データベースサーバ２ GWSDL Data query services Data Base server 1 We are designing the JVO prototype II, which is an extension of the prototype I and incorporates functions required in the practical system. Followings will be newly implemented or improved on the prototype II: Design for Prototype II This example shows a demo doing a cross-matching search between the two databases SDF-i’ and SDF-z’. At first a search command is issued to the SDF-i’ database server, mizu-g, then the result is transferred to the SDF-z’ database server, minazuki-g, where cross-matching search is executed. Image requests are issued at the last two steps. The query results are transferred through Grid. FTP in a VOTable format for table data and in FITS for image data. The query result is shown up in a result page, which is a kind of VOTable viewer and provides an easy access to both the table and image data. For graphical viewing of the table data, plotting tool is available. You can specify any column or expression for X/Y axis. http: //jvo. nao. ac. jp/ Main Control Window MVC Astronomical Catalog Query Service Catalog DB Data Archive Service Data manage DB Column attributes are displayed by pushing the “column_info” button, where you can also control the column layout. Abstract : The National Astronomical Observatory of Japan (NAOJ) started the Japanese Virtual Observatory (JVO) project since April 2002. JVO utilizes the Grid technology to combine several remote computational resources. We have defined the query language for the JVO to federate multiple astronomical databases and constructed a prototype of the JVO to confirm whether federated databases can be accessed through Grid technology. More information is available at: JVO Prototype Ver 1. Open a JVO QL Editor Write JVO QL here or use an editor. The current JVO prototype can communicates with four distributed database, “Subaru Deep Field i’-band” (SDF -i’), SDF-z’, “Subaru XMM Deep Survey” (SXDS), and 2 MASS. A main control window provides you to specify a query in JVO Query Language. You can save/load the QL in a file with the Export/Import button. A QL editor is opened by pushing he editor button and provides an easy way to specify search conditions. The JVO system splits the user input query into pieces of queries for each database, then ssues search commands to appropriate servers through a “globus-job-submit” command of Globus Toolkit. MVC JVO Portal MVC Virtual Observation execution service Globus Toolkit V 2 Globus Toolkit Security mngmt Resource mngmt Data management Data Analysis service Other VO services The first version of JVO prototype has been completed. The design of the JVO prototype is shown as a schematic diagram. We adopted to use the Globus Toolkit 2 for our prototype. However, we also take into account the Web Service concept which is included in the Globus Toolkit 3. Three-Tiered Design of the JVO Prototype I Web Browser for JVO searcher Viewer for JVO UDDI server Service Registry JVO GRID Environment Other GRID Environment Service Globus Toolkit Registry Security mngmt Resource mngmt Data management Other Catalog services Gb Ether t the beginning, researchers provide the JVO with simple instructions how they plan to use their own Road Map