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The Oscillating Slit Micrometer of the Meridian Circle PMC 190 Tokyo

Published online by Cambridge University Press:  04 August 2017

C. Kühne ,
M. Miyamoto  and
M. Yoshizawa
C. Kühne
Affiliation:
Carl Zeiss, D-7082 Oberkochen, Federal Republic of Germany
M. Miyamoto
Affiliation:
Tokyo Astronomical Observatory, Mitaka, Tokyo 181, Japan
M. Yoshizawa
Affiliation:
Tokyo Astronomical Observatory, Mitaka, Tokyo 181, Japan

Abstract

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The meridian circle installed at the Tokyo Astronomical Observatory in 1982/83 is equipped with a photoelectric Double Slit Micrometer which is one of the basic prerequisites for fully automatic observation. A slit plate is located in the image field of the telescope. It oscillates parallel to right ascension while being guided at the mean traveling speed of the star.

The paper describes the procedure by which the moment of the star passage through the instrument's meridian and declination is determined. Furthermore, the autocollimation devices are described which are an essential prerequisite for the determination and periodical checking of the instrumental errors.

Also, the measuring devices for the passage of the sun and the moon are dealt with briefly.

Type
V. Small Field Photoelectric Astrometry
Information
Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 379 - 388
Copyright
Copyright © Reidel 1986 

References

Literature

Kühne, C. 1983, A new automatic meridian circle PMC 190, Astron. Astrophys. 121, pp. 165–173 Google Scholar
Høg, E., 1970, A Theory of a Photoelectric Micrometer Astron. Astrophys. 4, pp. 89–95 Google Scholar
Yoshizawa, M., Yasuda, GH. 1982, Pinhole System for Solar and Lunar Observations, Annals of the Tokyo Astronomical Observatory, 2. Series, Vo. XIII, No. 4 Google Scholar