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Geneva photometric boxes. IV. A refined method for direct access

Published online by Cambridge University Press:  12 April 2016

Bernard Nicolet
Bernard Nicolet*
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland

Abstract

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In the Geneva photometry, a photometric box around a so-called central star is the set of stars having almost the same colours as this central star.

For the most current applications, it is useful to construct the boxes of a few hundred stars. A method allowing to obtain these boxes rapidly is described. It is based on socalled direct access square files. A FORTRAN routine on a UNIVAC 1160 computer is widely used at the Geneva Observatory. The principles described in this paper may be easily adapted to build square files and to write routines in evolved languages for most computers.

Other applications of square files are also outlined.

Type
I. Data in Space Astronomy
Information
International Astronomical Union Colloquium , Volume 64: Automated Data Retrieval in Astronomy , 1982 , pp. 277 - 280
Copyright
Copyright © Reidel 1982

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