Recognition of objects and position recovery from microdensitometer measurements of large field plates

Details Recognition of objects and position recovery from microdensitometer measurements of large field plates Recognition of objects and position recovery from microdensitometer measurements of large field plates

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..52...27c&link_type=abstract

Astrophysics and Space Science, vol. 52, no. 1, Nov. 1977, p. 27-33. Consiglio Nazionale delle Ricerche

Astronomy and Astrophysics

Astronomy

1

Microdensitometers, Photographic Plates, Position (Location), Astronomical Photography, Image Processing, Sky Surveys (Astronomy)

Scientific paper

The Coma region on a glass copy of the Palomar Sky Survey has been scanned with a microdensitometer. A method is described for obtaining the photometric parameters and positions of the images; 12,316 objects have been found. The repositioning of the scanner over the computed coordinates is satisfactory. AGK3 stars were considered to evaluate the plate constants and the precision. Comparison with Dressel and Condon's (1976) positions of galaxies gives a rms scatter consistent with the internal error of the published list.

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