We collected eleven large astronomical catalogues, which include 2MASS, USNO B1.0, GSC 2 catalogues and so on. Most of these catalogues are the frequently used by astronomers for all sorts of applications. But the researches are faced with the problem of accessing these databases because these catalogues contain from tens millions up to thousands of millions of records. So we developed a web application system to manage these large catalogues, the main purpose of the web application is to allow a powerful and efficient querying activity on these catalogues through internet by using a simple web interface. User could retrieve the query result in variety of formats including plain text, HTML, Microsoft Excel format (XLS), and VOTable. Furthermore, user also could display and analyze result graphically by using a powerful interactive visualization tools named VOPlot which was developed by the Virtual Observatory-India (VOI) project.

• 성현일(한국천문연구원) | HYUN-IL SUNG (Korea Astronomy and Space Science Institute)
• JIANG SANG(한국천문연구원)
• 김봉규(한국천문연구원) | BONG GYU KIM (Korea Astronomy and Space Science Institute)
• 임인성(한국천문연구원) | IN SUNG YIM (Korea Astronomy and Space Science Institute)
• 김상철(한국천문연구원) | SANG CHUL KIM (Korea Astronomy and Space Science Institute)
• 안영숙(한국천문연구원) | YOUNG SUK AHN (Korea Astronomy and Space Science Institute)