From masatoshi.ohishi at nao.ac.jp Tue Jan 17 03:03:09 2012 From: masatoshi.ohishi at nao.ac.jp (M. Ohishi) Date: Tue, 17 Jan 2012 20:03:09 +0900 Subject: Catalog Server Kit Message-ID: Dear IVOA, One of our young researcher has published a paper, "Development of 2MASS Catalog Server Kit", at http://www.jstor.org/stable/10.1086/663234 . If you find this paper interesting, please contact to the author (Chisato Yamauchi chisato.yamauchi at nao.ac.jp ). With best regards, Masatoshi Ohishi, National Astronomical Observatory of Japan ====== ABSTRACT. We develop a software kit called ?2MASS Catalog Server Kit? to easily construct a high-performance database server for the 2MASS Point Source Catalog (includes 470,992,970 objects) and several all-sky catalogs. Users can perform fast radial search and rectangular search using provided stored functions in SQL similar to SDSS SkyServer. Our software kit utilizes open-source RDBMS, and therefore any astronomers and developers can install our kit on their personal computers for research, observation, etc. Out kit is tuned for optimal coordinate search performance. We implement an effective radial search using an orthogonal coordinate system, which does not need any techniques that depend on HTM or HEALpix. Applying the xyz coordinate system to the database index, we can easily implement a system of fast radial search for relatively small (less than several million rows) catalogs. To enable high-speed search of huge catalogs on RDBMS, we apply three additional techniques: table partitioning, composite expression index, and optimization in stored functions. As a result, we obtain satisfactory performance of radial search for the 2MASS catalog. Our system can also perform fast rectangular search. It is implemented using techniques similar to those applied for radial search. Our way of implementation enables a compact system and will give important hints for a low-cost development of other huge catalog databases. From m.b.taylor at bristol.ac.uk Fri Jan 20 05:43:56 2012 From: m.b.taylor at bristol.ac.uk (Mark Taylor) Date: Fri, 20 Jan 2012 13:43:56 +0000 (GMT) Subject: RFC for SAMP V1.3 In-Reply-To: References: Message-ID: -- Polite reminder: just about a week left for the SAMP 1.3 RFC. Mark On Mon, 12 Dec 2011, Mark Taylor wrote: > Dear IVOA Members, > > Version 1.3 of the SAMP protocol, including the Web Profile, > is now available for public review. The RFC period will run from > today until 29 January 2012 (the period is extended in consideration > of the Christmas break). Please contribute comments on the > following wiki page: > > http://www.ivoa.net/cgi-bin/twiki/bin/view/IVOA/SampRfcV13 > > Many thanks for your consideration. > > Mark Taylor > Applications Working Group > > -- > Mark Taylor Astronomical Programmer Physics, Bristol University, UK > m.b.taylor at bris.ac.uk +44-117-928-8776 http://www.star.bris.ac.uk/~mbt/ From Christophe.Arviset at esa.int Mon Jan 30 02:07:44 2012 From: Christophe.Arviset at esa.int (Christophe Arviset) Date: Mon, 30 Jan 2012 11:07:44 +0100 Subject: The IVOA in 2011: Technical Assessment and Roadmap for 2012 Message-ID: <10622_1327918050_4F266BE2_10622_158264_3_4F266BF0.9070503@esa.int> Dear all Following many inputs from Working Groups and Interest Groups chairs and vice-chairs, "The IVOA in 2011: Technical Assessment and Roadmap for 2012" has been endorsed by the IVOA Exec and is now available at: http://www.ivoa.net/Documents/Notes/IVOATechRoadmap2011/index.html Many thanks to all the people who have participated to this document ! -- Thanks in advance Cheers Christophe ------------------------------------------------------------------- Christophe ARVISET Christophe.Arviset at esa.int Head of the Science Archives and Computer Support Engineering Unit Science Operations Department European Space Astronomy Centre (ESAC) European Space Agency (ESA) P.O. Box 78 28691 Villanueva de la Canada Tel: +34 91 813 12 78 Madrid - SPAIN Fax: +34 91 813 13 08 ------------------------------------------------------------------- This message and any attachments are intended for the use of the addressee or addressees only. The unauthorised disclosure, use, dissemination or copying (either in whole or in part) of its content is not permitted. If you received this message in error, please notify the sender and delete it from your system. Emails can be altered and their integrity cannot be guaranteed by the sender. Please consider the environment before printing this email.