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The GSC-I and GSC-II Databases: An Object-Oriented Approach

  • G. Greene (a1), B. McLean (a1), B. Lasker (a1), D. Wolfe (a1), R. Morbidelli (a2) and A. Volpicelli (a2)...

Extract

The original GSC-I (Jenkner et al. 1990) which contains 25 million entries and requires approximately 1GB of storage was at the edge of technological capability at the time catalogue construction began in 1984. At that time, a custom coded database was built since the relational databases of the era were unsuited to the HST-specific access requirements. A second generation GSC is now being constructed (Lasker et al. 1995), with an estimated 10 billion entries and a size of 2 Terabytes. The current generation of object-oriented database (OODB) systems are more suited to the needs of large astronomical catalogues and are being adopted by many large-scale projects. In a joint effort between the Space Telescope Science Institute and Osservatorio Astronomico di Torino, we are currently designing such an OODB for the Guide Star Catalogues and are implementing a prototype using the GSC-I data.

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Copyright

References

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Brunner, R. J., Ramaiyer, K., Szalay, A., Connolly, A.J. and Lupton, R.H., 1994 Astron. Soc. Pacific Conference Series 77.
Jenkner, H., Lasker, B. M., Sturch, C.R., McLean, B.J., Shara, M. M. and Russell, J. L., 1990 Astron. J. 99, 2082.
Lasker, B.M., McLean, B.J., Jenkner, H., Lattanzi, M.G., 1995 in “Future Possibilites for Astrometry in Space” ESA SP-379 pp.137.

The GSC-I and GSC-II Databases: An Object-Oriented Approach

  • G. Greene (a1), B. McLean (a1), B. Lasker (a1), D. Wolfe (a1), R. Morbidelli (a2) and A. Volpicelli (a2)...

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