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Impersonal Techniques of Transit Circle Observations. “The Carlsberg Automatic Meridian Circle”

Published online by Cambridge University Press:  04 August 2017

L. Helmer
L. Helmer*
Affiliation:
Copenhagen University Observatory, Brorfelde DK-4340 Tølløse

Abstract

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The conventionel reversible meridian circle of Copenhagen University, has over the last years been fully automated, and equipped with a new photoelectrical transit micrometer and a revised photoelectric circle recording system. Setting, observation and data recording is completely controlled by two minicomputers, therefore the presence of an observer is needed only for emergency situations, and for the reduction procedure. The telescope has been succesfully tested over a two year period in Brorfelde, resulting in two published catalogues with mean errors similar to those previously obtained with the photographic micrometer. The magnitudes were also measured and the limiting magnitude in Brorfelde was mv = 12.

In the autumn of 1983 the telescope was moved to the Canarian island La Palma, where it is currently being installed.

Type
VI. Transit Circles and Astrolabes
Information
Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 429 - 433
Copyright
Copyright © Reidel 1986 

References

Helmer, L., Fabricius, C., Einicke, O.H., Thoburn, C.: 1983; Astron. Astrophys. Suppl. Ser. 53, 223.Google Scholar
Helmer, L., Fabricius, C., Einicke, O.H., Thoburn, C., Morrison, L.V.: 1984I; Astron. Astrophys. Suppl. Ser. 55, 87.Google Scholar
Helmer, L., Fabricius, C., Thoburn, C.: 1984II in preparation.Google Scholar
Laustsen, S.: 1967; Publ. Mindre Medd. Kbh. Obs. 190.Google Scholar