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The Vacuum Mires of the Transit Instrument at Nikolaev

Published online by Cambridge University Press:  04 August 2017

G. M. Petrov ,
R. T. Fedorova  and
P. N. Fedorov

Abstract

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At Nikolaev, in 1978, a system for the improvement in the stability of the light path between the transit instrument and the meridian mires was designed. Its purpose is to improve the accuracy of the azimuth determination and that of the collimation. This system consists of twelve sections of 8 mm thick steel tube with 160 mm diameter, each nine meters long. These tubes are lying in special steel cradles which rest on brick support columns spaced 8 meters apart, and these can be moved vertically and horizontally by 100 mm and 50 mm, respectively. Thus it is possible to align the axis of the tube exactly.

Type
VI. Transit Circles and Astrolabes
Information
Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 529 - 531
Copyright
Copyright © Reidel 1986 

References

Petrov, G. M., 1964. Izv. GAO 174 Google Scholar
Tursunov, O., 1966. Tsirkular TAO, No. 335.Google Scholar