A method for improving the accuracy of the DCMT circle reading system.

Details A method for improving the accuracy of the DCMT circle reading system. A method for improving the accuracy of the DCMT circle reading system.

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pbeio..22...65z&link_type=abstract

Publications of the Beijing Astronomical Observatory, No. 22, p. 65 - 68

Astronomy and Astrophysics

Astronomy

Meridian Circles: Accuracies, Meridian Circles: Micrometers, Meridian Circles: Methods Of Reduction

Scientific paper

The declinations of stars are determined by the circle micrometers on the meridian circle. The determined accuracy of declinations depends on the systematic accuracy of the micrometers. The DCMT (Danish Chinese Meridian Telescope) adopts the photoelectric scanning micrometers as the circle reading system. The systematic error of the circle reading, including errors caused by mechanics, the drift of zero point and electronics was discussed in this paper. The method of reductions and the repeatability of the circle reading were presented.

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