05/24/2004The 12th UN/ESA Workshop on Basic Space Science Chinese Virtual Observatory (China-VO) Chenzhou Cui Chinese Virtual Observatory Project National

05/24/2004The 12th UN/ESA Workshop on Basic Space Science

Chinese Virtual Observatory(China-VO)

Chenzhou CuiChinese Virtual Observatory Project

National Astronomical Observatory of China


Chinese Virtual Observatory

Agenda

Why China-VOHistoryResearch & Development FocusesLatest ProgressPartners and collaboration


Development of China-VO

• Advanced research platform for Chinese astronomers

• Acquire data and technologies from IVOA partners

• Share our data (LAMOST, SST, FAST, BATC …) with international astronomers

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

• Public Education


Milestones

• Nov. 2001, the 1st national VO meeting• Jul. 2002, “China-VO” project initiated • Oct. 2002, joined to IVOA• Feb. 2003, first grid service, “Hello China-VO” • May 2003, “ConeSearch” service prototype• Jun. 2003, System design documents (draft)• Sep. 2003, the 2nd national VO meeting

» China-VO WG established• Oct. 2003, Demo: Chemical Evolution

Research of the Galaxy under Grid Environments• Nov. 2003, IVOA Small Projects Meeting• Mar. 2004, VOTFilter


Principles for China-VO R&D

• Interoperable and Compatible with IVOA

• Based on Grid

• Free software + cheap Hardware

• International collaboration


China-VO R&D focuses

Unlike NVO, Euro-VO and AstroGrid, as a small VO project,

• China-VO will emphasize on applications and portals.

• But we will take part in the developments of IVOA standards and infrastructure actively.


R&D Focuses

1. China-VO Platform Construction2. Integrated Data Access Service for

national and international astronomical datasets

3. Legacy Application Integration4. Astronomical Instrument Integration

– VO-enabled LAMOST

5. Education


Architecture: China-VO Platform


SOA: China-VO Platform


Topology: China-VO Platform


Legacy Application Integration

existing Software Packages, Toolkits, Libraries– Astronomical Utilities – Image Manipulation – Math and Statistics– Plotting

IRAF, MIDAS, AIPS, …need much user interactionalmost impossible for integration

the more simple I/O and simple user interfacethe more easier to integrate


Data Access Services

• IVOA DAL and Interoperability standards– VOTable, SIA, UCD, VOQL, etc.

• easy access to national and international astronomical datasets

• especially important for countries absent of large observation instruments


Astronomical Instrument Integration

Current projects:

• NAOC 2.16m telescope• Yunnan observatory 2.4m telesc

ope• public internet observatory

wide-field camera, 35cm, 60cm• Tsinghua Univ. 40cm public teles

cope

NAOC 2.16 m telescope


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


VO-enabled LAMOST

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


VO-based Education

• international education resource access• bilingual Skymap• English-Chinese astronomical dictionary• Amateur Astro-Photography Gallery• …

• China-VO education portal


• Data Access Service

• Chemical Evolution Research of the Galaxy under Grid Environments

• VOTFilter

• gImageMagick

• China-VO Service Registry

Latest Progress


Database Access Service

Catalog/metadata

VOTable Wrapper

ADQL/SQL Translator

GT3 Interface

ADQL VOTable

JDBC

SQL ResultSet

DBMSChart courtesy of Jian Sang


• Catalog Selection

• ConeSearch– RA– DEC– Radius

Database Access Service

http://ns2.lamost.org:8080/cvo/







Galactic Abundance Gradients Analysis

Databases

Data Access

Statistic Analysis

Orbit Computing


VOTFilter

• An XML Filter written in XSLT • for OpenOffice Calc• to read&write files in• VOTable format

VOTable• The first standard from IVOA• an XML format defined for the exchange of tabular

data in the context of the Virtual Observatory


http://services.china-vo.org/vofilter/Usage and Snapshot

http://services.china-vo.org/vofilter/






Funding and Collaboration

• Funding– 500,000 RMB (~63,000 USD)– NSF China– MOST (Ministry of Science and Technology, China)– CAS (Chinese Academy of Sciences)

• Collaboration– WDC-China– CNGrid project (CNIC)– Xinglong Station (NAOC)– LAMOST project (NAOC)


Partners

• National Astronomical Observatories, CAS– Beijing, Yunnan, …

• Astronomy Department, Peking University• University of Science and Technology of China• Astrophysics Center, Tsinghua University• Physics Department, Central China Normal Univers

ity• Computer Network Information Center, CAS• Supercomputing Center, CAS• Institute of Computing Technology, CAS• ……



Q & A

?www. .org

Thank You

Documents

05/24/2004The 12th UN/ESA Workshop on Basic Space Science Chinese Virtual Observatory (China-VO) Chenzhou Cui Chinese Virtual Observatory Project National