Computer Science – Databases
Scientific paper
Jun 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008pnaoc...5..116c&link_type=abstract
Astronomical Research and Technology. Publications of National Astronomical Observatories of China (ISSN 1672-7673), Vol. 5, No.
Computer Science
Databases
Fits, Databases, Software Development, Data Management
Scientific paper
Flexible Image Transport System (FITS) is the widest adopted data format in astronomy. Since FITS was endorsed by the IAU for the interchange of astronomical data in 1980s, most of astronomical data are stored and exchanged among astronomers and world-wide data centers. FITS files, stored and managed by Operating System file systems, can hardly be searchable and locatable. With the rapid increase of the number of FITS files, the development and popularization of Virual Observatory (VO), it is more and more urgent to provide on-line search and access functions for FITS files stored in file systems. The keyword records in FITS header provide exact description of the structure of the corresponding FITS file, but also give much important information of the data stored in the file. Most of search requirements on FITS files can be satisfied by information taken from primary header keyword records. Storing and managing keyword records using DataBase Management System will make FITS file searching easy and flexible. FITS Header Archiving System (FitHAS) is a simple but useful application developed by Chinese Virtual Observatory project. With FitHAS, the keyword record information for one or more FITS files under a given directory can be imported into a database easily. Basing on the keyword database, FITS files can be searched and located. A little further, advanced data access systems including VO can be deployed. In the paper, basic knowledge of FITS and FITS header are introduced, searching and accessing of FITS files in VO environments are discussed, and functions, characters, design and development of FitHAS are described.
CUI Chen-Zhou
Li Wen
Xu Zhen
Yu Ce
Yu Jian-Jun
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