Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.212..453s&link_type=abstract
Astrophysics and Space Science, vol. 212, nos. 1-2, p. 453-463
Astronomy and Astrophysics
Astrophysics
4
Astrometry, Spaceborne Telescopes, Stellar Motions, Accuracy, Mathematical Models, Precision
Scientific paper
An end-to-end modelling program for an astrometric telescope employing a Ronchi ruling has been developed. The program models the aberrated images formed anywhere in the field-of-view. It then determines apparent centroids by simulating the motion of a Ronchi ruling across the field. Photo-electron statistics are included. A 6-term plate-constant model is used to determine the apparent motion of a target star within a reference frame as the object is re-observed through both ideal and perturbed optics. The modelling code is accurate at the submicroarcsecond level. optics. The modelling code is accurate at the submicroarcsecond level.
Ftaclas Chris
Gatewood George
Pravdo Steven
Shaklan Stuart
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