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Experimental Astronomy

, Volume 2, Issue 2, pp 85–99 | Cite as

The micrometers of the Carlsberg Automatic Meridian Circle

  • L. Helmer
  • C. Fabricius
  • L. V. Morrison
Article

Abstract

A new moving slit star micrometer has been developed for the 18 cm Carlsberg Automatic Meridian Circle on La Palma. A zenith mean error of 0 inf. sup 15 for one transit and a limiting magnitude of 14 inf. supm 8 is obtained. It has a high efficiency and is well suited for improving the FK5 system and extending it to much fainter stars. A new collimator alignment micrometer and the necessary calibrations are also described.

Keywords

Meridian Circle Faint Star Collimator Alignment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • L. Helmer
    • 1
  • C. Fabricius
    • 1
  • L. V. Morrison
    • 2
  1. 1.Copenhagen University ObservatoryTølløseDenmark
  2. 2.Royal Greenwich ObservatoryCambridgeUK

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