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Proceedings Paper

Automated System Of Photographic Photometry
Author(s): Claude Rheault; Eduardo Hardy
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Paper Abstract

We present a digitized Stellar Photometry Automated (SPA) system capable of treating large amounts of information with little intervention from the astronomer. SPA automatically finds stellar objects, performs a cross correlation of all centers in all plates and applies an algorithm to derive a magnitude. Different magnitude algorithms are used such as analytical and numerical integration of the individual stellar arrays. Because of the linearization and the background-subtraction capability the results are of better quality then in conventional analogical techniques i.e. iris photometry, and can be moderately extrapolated. Data selection can be performed with the aid of a quality index. Techniques used in SPA are graphically illustrated and applications as well as future developments are briefly described.

Paper Details

Date Published: 21 November 1980
PDF: 8 pages
Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); doi: 10.1117/12.959805
Show Author Affiliations
Claude Rheault, Departement de Physique Universite Laval (Canada)
Eduardo Hardy, Departement de Physique Universite Laval (Canada)


Published in SPIE Proceedings Vol. 0264:
Applications of Digital Image Processing to Astronomy
Denis A. Elliot, Editor(s)

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