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Astrometric Programs by the New Hamburg Plate Measuring Machine

Published online by Cambridge University Press:  26 July 2016

Chr. de Vegt ,
L. Winter  and
N. Zacharias
Chr. de Vegt
Affiliation:
Hamburg Observatory, Gojenbergsweg 112, 21029 Hamburg, Germany
L. Winter
Affiliation:
Hamburg Observatory, Gojenbergsweg 112, 21029 Hamburg, Germany
N. Zacharias
Affiliation:
Hamburg Observatory, Gojenbergsweg 112, 21029 Hamburg, Germany

Abstract

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With the new Hamburg astrometric measuring machine, large sets of plates can be digitized very quickly with submicrometer accuracy. In particular about 2000 plates of the AGK2-catalog, mean epoch 1930, can be remeasured now for the first time to their limiting magnitude, about B = 11. The new AGK2-data therefore will cover practically the whole AC-catalog and TYCHO-stars in the northern hemisphere.

All plates will be reduced using the HIPPARCOS results as the reference frame when available in 1996. The new AGK2-data will provide a unique data base for the determination of high accuracy proper motions (about 2 mas/yr) of all TYCHO stars in the northern hemisphere. Furthermore, for the first time a dense reference frame for a final reduction of the Astrographic Catalog (AC) and the large deep sky surveys will be generated by this catalog. The inferior situation in the southern hemisphere will be addressed briefly.

Type
Part Four: Digitised Wide-Field Surveys
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 173 - 176
Copyright
Copyright © Kluwer 1994 

References

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