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Limitations on the accuracy possible in astrometric observations of the satellites of the major plane

Published online by Cambridge University Press:  25 May 2016

D.H.P. Jones
D.H.P. Jones*
Affiliation:
Royal Greenwich Observatory and Queen Mary and Westfield College Madingley Road, Cambridge CB3 0EZ United Kingdom

Extract

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Astrometric accuracy has two components; the accuracy with which an image can be centred on a CCD or photographic plate and the accuracy with which two image centres can be mapped on to standard co-ordinates. Photographic plates cover a sufficient area of sky that several standard stars can be measured with the satellite images and the mapping to standard coordinates can be done in one operation. CCDs have much smaller areas and the number of stars with sufficiently accurate positions may not be sufficient. The surface densities of the best available catalogues are shown in Table I.

Type
Part X - Solar System Astrometry
Information
Symposium - International Astronomical Union , Volume 172: Dynamics, Ephemerides and Astrometry of the Solar System , 1996 , pp. 431 - 434
Copyright
Copyright © Kluwer 1996 

References

Bessel, F.W. (1841) Theorie eines, mit einem Heliometer versehen Aequatoreal-Instruments, Astronomische Untersuchungen, Erster Band, pp. 1–54 Google Scholar
Arend, S. (1951) Théorie de l'équatorial visuel et de l'équatorial photographique., Monographies Observatoire Royal de Belgique, 2., pp. 51–57 Google Scholar