Astrometric observations of Saturn's satellites from McDonald Observatory, 1972

Details Astrometric observations of Saturn's satellites from McDonald Observatory, 1972 Astrometric observations of Saturn's satellites from McDonald Observatory, 1972

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974stin...7521177a&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Astrometry, Natural Satellites, Reference Stars, Saturn (Planet), Astronomical Coordinates, Microdensitometers, Photographic Plates, Reflecting Telescopes, Sky Surveys (Astronomy)

Scientific paper

Observations of Saturn's satellites were reduced by means of secondary reference stars obtained by reduction of Palomar Sky Survey (PSS) plates. This involved the use of 39 SAO stars and plate overlap technique to determine the coordinates of 59 fainter stars in the satellite field. Fourteen plate constants were determined for each of the two PSS plates. Comparison of two plate measurement and reduction techniques on the satellite measurements demonstrate the existence of a serious background gradient effect and the utility of microdensitometry to eliminate this error source in positional determinations of close satellites.

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