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| Paper: |
Accessing Astronomical Data over the WWW using datOZ |
| Volume: |
145, Astronomical Data Analysis Software and Systems VII |
| Page: |
371 |
| Authors: |
Ortiz, P. F. |
| Abstract: |
The Department of Astronomy of the University of Chile hosts a number of astronomical databases created with \datoz\ (Ortiz, 1997). This is a site in which databases are accessed interactively by the use of an HTML interface and CGI database engines. Data can be retrieved by the users in a highly flexible way, from lists of user-selected quantities, to customized plots, including any additional multimedia information available for the database elements. The latest additions to the system point in two directions: a) to allow access to combinations of database variables for different purposes, and b)to allow the retrieval and further correlation of information stored in different \datoz's databases, by means of a second tool named \catmerger. Another tool lets users search for objects in all catalogs created with \datoz\ at the same time. The most recent development is the creation of a new version of \datoz\ capable of handling catalogs such as USNO's A1.0 with 488 million objects. Specially designed indexing and data storage techniques allow the catalog size to be reduced by half. |
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