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Astrometric observations of Saturn's satellites from McDonald Observatory, 1972Observations of Saturn's satellites have been reduced by means of secondary reference stars obtained by reduction of Palomar Sky Survey plates. This involved the use of 29 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 measures appears to 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.
Document ID
19750061071
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Abbot, R. I. (Texas, University Austin, Tex., United States)
Mulholland, J. D.
Shelus, P. J. (McDonald Observatory; Texas, University Austin, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
September 1, 1975
Publication Information
Publication: Astronomical Journal
Volume: 80
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NSG-44-012-282
Distribution Limits
Public
Copyright
Other