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High Precision Crowded Field Photometry

Published online by Cambridge University Press:  14 August 2015

Peter Linde
Peter Linde*
Affiliation:
Lund Observatory, Box 43, S-221 00 Lund, Sweden

Abstract

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Methods have been developed for high precision photometry in crowded stellar fields. The procedure includes the following steps:

  • • Determination of a two-dimensional point spread function

  • • Definition of groups of stars with mutually overlapping images

  • • Determination of local background for each star group

  • • Simultaneous fitting of point spread functions, one for each star in the group

The Lund approach emphasizes interactivity. Many fundamental procedures are facilitated by the use of an optimised image display. Extensive modelling has been done to study the influence of various error sources.

Type
Joint Commission Meeting
Information
Highlights of Astronomy , Volume 8: Highlights of Astronomy. As presented at the XXth General Assembly of the IAU, 1988 , 1989 , pp. 651 - 656
Copyright
Copyright © Kluwer 1989

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