Automated System Of Photographic Photometry

Claude Rheault; Eduardo Hardy

doi:10.1117/12.959805

21 November 1980 Automated System Of Photographic Photometry

Claude Rheault, Eduardo Hardy

Proceedings Volume 0264, Applications of Digital Image Processing to Astronomy; (1980) https://doi.org/10.1117/12.959805
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States

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.

Citation Download Citation

Claude Rheault and Eduardo Hardy "Automated System Of Photographic Photometry", Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); https://doi.org/10.1117/12.959805

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