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Photometric Systems

Published online by Cambridge University Press:  12 April 2016

Michael S. Bessell*
Affiliation:
Mount Stromlo and Siding Spring Observatories, Private Bag, Weston Creek P.O. Canberra, ACT 2611, Australia

Abstract

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Multicolour photometry has historically been carried out within a variety of standard systems. With the advent of new detectors with different wavelength sensitivities to those of the original system and the use of subsets of secondary standards, many subtle and not so subtle changes have occurred to the original systems. However, by reverse engineering, the passbands of the modified standard systems can be determined which enables good realisation of theoretical colours and better passband matching for CCD-based photometry. In this paper, the various photometric systems will be discussed and compared and strategies will be outlined for ensuring that precise relative photometry is maintained in the future, in particular from area detectors.

Information

Type
Session 1 Photometric Systems
Copyright
Copyright © C.J. Butler and I. Elliottt 1993