History and current status

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The Chinese VIRTUAL OBSERVATORY
China-VO
History and current status
Chenzhou CUI National Astronomical Observatories,
Chinese Academy of Sciences
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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
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Lenovo 6800
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Observatories in CAS

• NAOC
• Beijing
• Changchun
• Urumchi
• Kunming
• Purple Mountain Obs. (Nanjing)
• Shanghai Obs.
• Qinghai Station

Optical 2.4m Radio 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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RD Focuses

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

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History and Events

• 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

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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.
• RD 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/

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A Smart On-line Astronomical Information Collector
SkyMouse

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

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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
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Roles of Small VO Projects

• Bridging
• Bridging IVO Standards and Best Practice
• Bridging VO and Domestic Community
• Servicing
• User training
• VO-enabled projects

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VO-enabled LAMOST
Large sky Area Multi-Object fibre Spectroscopy
Telescope
Clear aperture? 4m Field of view ? 5 Focal
plane ? 1.75m Focal length20m Number of
fibers4000 Spectral ranges370900nm Spectral
resolution1 0.25nm Sky coverageDeclination
-10 ? to90?
A meridian reflecting Schmidt telescope
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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

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

• Started in 1995
• data archived on CD-ROM and hard disks
• 700 GB images

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BATC Data Release
Current Interface

• Catalog is available at VizieR now
• Image archive access system is under developing

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The Chinese VIRTUAL OBSERVATORY

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