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The System and Quality of the AGK3U

Published online by Cambridge University Press:  26 July 2016

L.G. Taff
L.G. Taff*
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, U.S.A.

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The methods used to assess the quality and the system of the AGK3U (Bucciarelli et al. 1992) are reviewed. However, the point of this paper is that all star catalogs should undergo a comparable evaluation. It is too easy to follow the recipes of statistics, examine internal measures, declare success, and move on. All recipes can be ruined with the wrong ingredients and the theorems of statistics are no different. Since it is impossible to verify that the hypotheses are a priori fulfilled, one has to be resourceful and devise methods which fully test the outcome a posteriori. The AGK3U has been so examined; our efforts are described herein. (The AGK3U is the first attempt to combine astrometrically reduced Schmidt plate positions with those from astrographic plates [Taff 1989; Taff et al. 1990]. Our sub-plate code will be available soon because of NASA support to make it portable.)

Type
Part Six: Calibration: Astrometric and Photometric
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 271 - 275
Copyright
Copyright © Kluwer 1994 

References

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