IVOA SPM 2006, Moscow 1

History and current status

Chenzhou CUINational Astronomical Observatories, Chinese Academy of Sciences

The Chinese VIRTUAL OBSERVATORY

IVOA SPM 2006, Moscow 2

Content

• Infrastructure and facilities in CAS• Principles and goals for the China-VO• Activities and outputs• Future directions• Roles of small VO projects

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IT infrastructure in CAS

2001 year 2005 year

Network

Core net bandwidth

1Gbps 2.5Gbps

Backbone net bandwidth

2Mbps N*155Mbps+5Gbps

International Links

55Mbps 620Mbps+17.5Gbps

Computing and Storage

Rpeak 0.13 TFlop/s 5.3 TFlop/s

Storage 2.1TB 182TB

Rmax 0.05 TFlop/s 4.193 TFlop/s

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Lenovo 6800 Rank 124

Site CAS

Manufacturer Lenovo

ComputerDeepComp 6800, Itanium2 1.3

GHz, QsNet

Country China

Year 2003

Processors 1024

Rmax 4193

Rpeak 5324.8

Nmax 491488

Nhalf 0

Operating System

Linux

Architecture Cluster

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• NAOC– Beijing– Changchun– Urumchi– Kunming

• Purple Mountain Obs. (Nanjing)

• Shanghai Obs.– Qinghai Station

Observatories in CAS

Optical: 2.4mRadio: 50m

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Development of China-VO

• Advanced research platform for Chinese astronomers

• Import data and technologies from IVOA partners

• Share Chinese datasets with international astronomers

• Bring up a group of VO-oriented astronomers, engineers and students

• Education outreach

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R&D Focuses

• China-VO Platform• Uniform Data Access System• VO-compliant projects• VO-enabled facilities• VO-based Public Education

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•2001.11 1st VO workshop in China•2002.7 “China-VO” kicked off•2002.10 “China-VO” became a member of the IVOA•2003.6 China-VO system design•2003.9 the 2nd VO workshop•2003.11 IVOA Small Projects Meeting•2004.5 VOFilter 1.0 released•2004.12 China-VO 2004•2005.8 VOFilter 2.0 released•2005.11 China-VO 2005•2006.5 VO-DAS project began•2006.7 SkyMouse 1.0 released•2006.12 China-VO 2006•2007.5 IVOA interoperability meeting, Beijing

History and Events

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China-VO Meeting (2001, Beijing)

VO is important, we should involve…

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China-VO in 2002

• “China-VO” initiated• China-VO PI (Yongheng Zhao) attended the VO

conference in Garching, ESO• Dr. Jim Gray (NVO, Microsoft Research) visited the

China-VO• China-VO became a member of the IVOA

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China-VO 2003, Beijing

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Small project meeting, Beijing

• 26-28 November 2003: Beijing, China• Main topics:

– Advantages and disadvantages of small projects. – The role of small projects in the IVOA. – R&D focus of small projects. – Collaboration among small projects and with big VO

projects. – Implementation of IVOA standards and

infrastructures developed by other VO projects.

• 39 participants from Korea, Japan, India, Europe, UK and China (including Taiwan)

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Brief Review

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China-VO 2004, Wuhan, Hubei

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China-VO 2005 (Weihai, Shandong)

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China-VO 2006

• Theme: the coming e-science era for astronomy research

• Date: November 29th – December 3rd

• Place: Guangxi Normal Univ., Guilin, Guangxi

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China-VO Architecture

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Two XSLT transforms

• VOFilter– an XML filter for OpenOffice.org Calc to open

VOTable files– http://services.china-vo.org/vofilter/

• VOTable2XHTML– a stylesheet to transform VOTable data into

HTML/XHTML format– http://services.china-vo.org/votable2xhtml/

IVOA SPM 2006, Moscow

• Touch the sky with your mouse• An intelligent client for VO services• A commodity for astronomers and

students

A Smart On-line Astronomical Information Collector

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VO Data Access Service (VO-DAS)

• Based on comparative mature Grid middle-wares, for example Globus Toolkit and OGSA-DAI, the VO-DAS system will provide VO-compliant, uniform access interfaces for different kinds of astronomical resources existing as VO services, databases, file systems and even data mining algorithms and other applications.

• From Aug 14th, VO-DAS project has been turned from design stage to coding stage. A preview version will be available by the end of the year. The first public release will be in the IVOA 2007 Spring Interoperability meeting.

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VO-DAS

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Astrophysical Integrated Research Environment (AIRE)

• Provide a web-based collaborative research environment

Radio : Interferometry …, AIPS, AIPS++, Difmap…Optical : Photometry … , IRAF, MIDAS …X-ray : Coded-mask …, HEADAS ….

Contributed by Tsinghua University

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Partners

• National Astronomical Observatories (NAOC)• Purple Mountain Astronomical Observatory (Nanjing)

• Shanhai Astronomical Observatory• Tsinghua University• Peking University• Beijing Normal University• Nanjing University• University of Science and Technology of China

• Beijing Planetarium• Huazhong Normal University• Computer Network and Information Center, CAS

• Tianjing University

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Topology

NAOC

YNAO

PKU

…

Internet

CNGrid

SSC SCCAS

CNIC

THU…

IVO

NVO

…AstroGrid

AVO

China-VO

USTC

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Roles of Small VO Projects

a. Bridginga) Bridging IVO Standards and Best Practice

b) Bridging VO and Domestic Community

b. Servicinga) User training

b) VO-enabled projects

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LLarge sky arge sky AArea rea MMulti-ulti-OObject fibre bject fibre SSpectroscopy pectroscopy TTelescopeelescope

Clear aperture: 4m

Field of view: 5°

Focal plane: 1.75m

Focal length:20m

Number of fibers:4000

Spectral ranges:370 ～ 900nm

Spectral resolution:1 ～ 0.25nm

Sky coverage:Declination -10 to+90

A meridian reflecting Schmidt telescope

VO-enabled LAMOST

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VO-enabled LAMOST

• VO-enabled– LAMOST data– LAMOST Spectral Analysis Pipeline

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Beijing-Arizona-Taiwan-Connecticut Sky Survey

• Started in 1995• data archived on

CD-ROM and hard disks

• 700 GB images

•0.6/0.9 m Schmidt telescope•15 intermediate-band filters

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• Catalog is available at VizieR now

• Image archive access system is under developing

BATC Data Release

Current Interface

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Q & A

?www. .org

The Chinese VIRTUAL OBSERVATORY