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Proceedings Paper

Application Of Moments To The Analysis Of Panoramic Astronomical Photographs
Author(s): R. S. Stobie
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Paper Abstract

Panoramic astronomical photographs may contain information on up to one million images of stars and galaxies. To extract this information in a day requires a high-speed measuring machine and image analysis system. Each stellar or galaxian image may be regarded as a connected set of pixels above some local threshold. The moments (unit-weighted and intensity-weighted) up to second order of the pixel distribution for each image are calculated and form the basis of a set of image parameters. This type of analysis is suitable for the great majority of images which do not show complex structure intrinsic to the source. These moments provide data in three basic categories of information relevant to the astronomer, i.e., astrometric, photometric and image classification. Application of this scheme and the accuracy of the image parameters is demonstrated with data obtained from the COSMOS measuring machine.

Paper Details

Date Published: 21 November 1980
PDF: 5 pages
Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); doi: 10.1117/12.959806
Show Author Affiliations
R. S. Stobie, Royal Observatory (Scotland)

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

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