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A Deep Wide Field Survey from Digitally Stacked Schmidt Plates

Published online by Cambridge University Press:  12 April 2016

M. R. S. Hawkins
M. R. S. Hawkins*
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK

Abstract

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A large set of exposures of a single UK Schmidt Telescope field has been obtained, covering five colour bands over 18 years. Techniques have been developed for combining digitised data from many plates. The results of adding 64 exposures in Bj and R are demonstrated showing that the expected gain of ~ 2.5 magnitudes in limiting magnitude are achieved. By combining various subsets of the data, proper motions and variability can be determined. Two examples of the many possible uses of the dataset are given: the discovery of low mass brown dwarf candidates using colours and proper motions, and of quasars using variability and colours.

Type
VII. Digitisation of Schmidt Data
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 192 - 199
Copyright
Copyright © Astronomical Society of the Pacific 1995

References

Hawkins, M.R.S. & Bessell, M.S., 1988, MNRAS, 234, 177 CrossRefGoogle Scholar
Hawkins, M.R.S. & Véron, P., 1993 MNRAS, 260, 202 Google Scholar