Photographic zenith tube of the Zvenigorod INASAN Observatory - Processing method and observation results

Details Photographic zenith tube of the Zvenigorod INASAN Observatory - Processing method and observation results Photographic zenith tube of the Zvenigorod INASAN Observatory - Processing method and observation results

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69.1090y&link_type=abstract

Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 5, p. 1090-1098.

Statistics

Computation

Astronomical Photography, Computational Astrophysics, Stellar Orbits, Astrometry, Error Analysis, Photographic Plates

Scientific paper

A method for the reduction of PZT plates which has been used at the Zvenigorod INASAN Observatory since 1986 is described. The formulas used for computing the coordinates of the stellar image in the focal plane at the midpoint of the exposure are correct to 0.0024 arcsec. Observations from February 1986 to October 1988 are compared with data of BIH and IERS, and the results of the comparison are used to compute the amplitudes of the annual terms of nonpolar variations in the observed latitudes and Delta(UTI).

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