On the systematic errors of the determinations of the absolute orientation of the meridian marks

Details On the systematic errors of the determinations of the absolute orientation of the meridian marks On the systematic errors of the determinations of the absolute orientation of the meridian marks

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.177..269p&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 177, no. 1-2, March 1991, p. 269, 270.

Astronomy and Astrophysics

Astrophysics

Astrometry, Instrument Compensation, Transits, Azimuth, Bessel Functions, Polar Regions, Precision

Scientific paper

A study of systematic differences between right ascensions (RAs) obtained from observations of stars in the upper and the lower culmination at the Greenwich, Herstmonceux, and Pulkovo observatories showed that the determinations of RA at these observatories contain systematic errors in the measurements of the absolute azimuth of meridian marks. In this paper, these errors are presented, showing that the errors of azimuth reached + or - 0.01 s and more, and the causes of the errors are discussed.

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