Other
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasj...45..119n&link_type=abstract
PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 45, no. 1, p. 119-128.
Other
4
Astrometry, Error Analysis, Schmidt Telescopes, Astronomical Catalogs, Photographic Plates, Reference Stars
Scientific paper
Positional errors after a full-field plate solution were analyzed for plates taken by the 105-cm Kiso Schmidt telescope with an emphasis placed on the plate-constant error. From two sets of plates, one of which comprised nine plates for five consecutive nights, the mean random plate error was estimated to be 0.l2-0.15 arcsec. By regarding each one of the reference stars on a plate as being an object star, the error distribution for object stars could be simulated. The error for object stars is shown to sometimes be a few times larger than the standard deviation of the residuals for the reference stars, especially for star numbers of less than about 50; this phenomenon is suggested to be due to error propagation inherent in the least-squares procedure. This error amplification/attenuation mechanism could be explained using a simple numerical simulation. The amounts of other error components are discussed using ZZCAT catalog.
Nakamura Tsuko
Sekiguchi Masayoshi
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