Other
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985acasn..26...22s&link_type=abstract
Acta Astronomica Sinica, Vol.26:1, P. 27, 1985
Other
Scientific paper
The astrometric properties of the 60/90/180 cm Schmidt telescope of the Beijing Astronomical Observatory have been investigated. One plate of the Pleiades cluster and another of the α Per moving cluster were measured by the Zeiss ASCORECORD measuring machine. The standard errors of measurement were ±1.4 μ or ±0arcsec.15 in x and +1.5 μ or ±0arcsec.17 in y. The standard deviation of the computed values using 10 plate constants in the entire field of 4°.8 diameter from the catalogue positions was ±0arcsec.38 and in the field of 3°.2 diameter was ±0arcsec.34 (averaged for right ascension and declination). No visible magnitude dependence was found.
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