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The Use of Astrometric Instruments in Vacuum Chambers
Published online by Cambridge University Press: 04 August 2017
Abstract
This paper discusses the effect of using a vacuum chamber with a horizontal entrance window to eliminate astronomical refraction, dispersion and irregular refraction in a telescope tube. Some engineering problems arising in connection with the entrance window are dealt with. The actual results obtained by vacuum photoelectric astrolabes and a vacuum photographic zenith tube are presented.
- Type
- VI. Transit Circles and Astrolabes
- Information
- Symposium - International Astronomical Union , Volume 109: Astrometric Techniques , 1986 , pp. 469 - 481
- Copyright
- Copyright © Reidel 1986